Table of Content

10 February 2006, Volume 25 Issue 02

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Articles

Characteristics of desert flora and vegetation in lower reach of Shiyang River论Basin

LIU Hujun;WANG Jihe;CHANG Zhaofeng;MA Quanlin;YANG Zihui;ZHAN Kejie

2006, 25(02):  113-118 . 

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The lower reach of Shiyang River Basin (LSRB) is located at the transition area from steppe to desert.There are 23 families,73 genus and 123 species of spermatophyte,which are not only the elements of desert and Gobi,but also the steppedesert species.The LSRB has an obvious characteristic of desert vegetation.The structure of synusia is simple,and 74.4% of association constructive species are shrub or semishrub,which composes of shrubbery or semi-shrubbery xerophytic community.The annul herb accounts for a few rate,but makes up “shrubbery-herb association" and acts as an important element of desert vegetation.In the floristic composition,the component of Temperature Zone is dominant,with superior to the species of Mediterranean Sea to Central Asia and their variants,and the second to the species of North Temperate Zone and their variants.The plants centralize in more adaptive habitats,with an obviously clumped distribution in whole area,but the species distribute simply at a small area.The vegetation can be classified into 4 vegetation types,5 vegetation subtypes,13 formation groups,23 formations,and 38 associations.The zonal vegetation distributes circularly with oases,and can be divided into three belts.Such a circular distribution of vegetation in LSRB is quite common in arid zone.

Quantitative classification of Pinus armandii communities in Qinling Mountains

LAN Guoyu^1,2;LEI Ruide²;AN Feng¹;CHEN Wei³;ZHAO Yonghua⁴

2006, 25(02):  119-124 . 

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Based on the data collected from 36 plots of Pinus armandii communities in Qinling Mountains,and by using vegetation tabular and Ward minimum range cluster analyses,the P.armandii forests in Qinling Mountains could be divided into 5 association groups and 7 associations types:Ass. Pinus armandii+Lespedeza formosa+Arthraxon hispidus,Ass. Pinus armandii+Lespedeza formosa+Ctenitopsis devexa,Ass. Pinus armandii+Rosa multiflora+Carex siderosticta,Ass. Pinus armandii+Lespedeza cyrtobotrya+Artemisia atrovirens,Ass. Pinus armandii+Spiraea wilsonii+Anaphalis sinica,Ass. Pinus armandii+Spiraea wilsonii+Athyrium otophorum,and Ass. Pinus armandii+Duchesnea indica.Reasonable management advices were put forward according to the characteristic of different associations.

Salt tolerance of saline-resistant transgenic Zhongtian poplar in cutting propagation

YIN Jiandao¹;ZHANG Hongling²;WANG Shuying¹;SUN Zhongxu³;WANG Lixia²;YANG Jinjun¹

2006, 25(02):  125-128 . 

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In a pot experiment with the nutritional medium made by seaside saline-alkali soil,this paper studied the growth and root development of salineresistant transgenic (mtk-D gene) Zhongtian poplar in cutting propagation.The results showed that the survival rate and growth of the cuttings decreased with increasing soil salt content.In the treatment of 2 g·kg^-1 salt content,the cuttings had a survival rate of >90%,and grew normally.When the salt content was >4 g·kg^-1,the cuttings died gradually because of salt stressinduced injuries,and the phloem lateral roots became brown and died,which resulted in the yellowing,wilting and dying of leaves.No significant difference was found in the salt tolerance and growth between saline resistanttransgenic Zhongtian poplar and its original wild type at the early stage of cutting propagation,which was probably related to the expression of the transgene in the cuttings.

Assessment of sustainable development in Yanbian forest region based on ecological footprint model

HU Xiaofei^1,2,DAI Limin¹;CHEN Fusheng^1,2;GU Huiyan¹

2006, 25(02):  129-134 . 

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Ecological footprint (EF) is one of the most important indicators in assessing sustainable development status and capacity.In this paper,the EF of Yanbian forest region was calculated and analyzed by using the statistical yearbooks and forest yearbooks from 1996 to 2002.The results showed that throughout the study period,the EF per capita decreased,ecological carrying capacity (ECC) per capita almost had no change,and ecological surplus per capita increased.The EF per 10⁴ yuan GDP per capita of Yanbian,which decreased from 1996 to 2002,was similar with that in western China,and distinctly higher than that in eastern China.The forestland EF kept a steady status,while the forest production footprint (FPF) and forest export footprint (FEF) decreased.After the implementation of Natural Forest Protection Program (NFPP),the mean value of FPF and FEF reduced by 0.341 and 0.327 hm²·cap^-1(46.32% and 54.94%),respectively.In conclusion,the regional and forest development in Yanbian were sustainable,and the implementation of NFPP was favorable to the improvement of sustainable development capacity.However,the development capacity was still lower than those in forest-developed countries.Therefore,it is very necessary to improve forest productivity and resource use efficiency,and to scientifically manage forest ecosystems in the future.

Ecological functions of green land system in Xi'an

QIN Yaomin;LIU Kang;WANG Yongjun

2006, 25(02):  135-139 . 

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hrough investigation,this paper classified the green lands in Xi'an into six planting structures, i.e.,trees+shrubs+herbs (T+S+H),trees+herbs (T+H),shrubs+herbs (S+H),trees (T),shrubs (S),and lawn (L).After determining the photosynthetically active radiation,relative humidity,temperature,noise,and bacteria in the air in the center and outside of the green lands,the ecological functions of the green lands on regulating urban microclimate were analyzed.All kinds of these green lands had the function of shading,which was decreased in order of S>T+S+H>T+H>S+H>T> L.Green lands also had obvious effect on lowering temperature,with the order of T+S+H>T>S>T+H>S+H> L.The effect of increasing humidity was in order of T+H > T+S+H>T>S>S+H> L,that of lowering noise was in order of T+S+H>T+H>T>S+H>S> L,and that on killing bacteria was in order of T+S+H>T+H>T>S+H>S> L.Green lands with multilayer structure had greater ecological functions than those with single layer.According to above results,the measures of increasing ecological functions of urban green lands were put forward.

Effects of organic materials cycling on soil organic carbon turnover in a red soil paddy ecosystem

ZHOU Weijun¹;WANG Kairong²;HAO Jinjua¹;LIU Xin²

2006, 25(02):  140-144 . 

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Based on the data of 12 years experiment in the Taoyuan Experimental Station of Agroecosystem Research of Chinese Academy of Sciences,this paper studied the contribution of organic materials cycling to the soil organic carbon turnover in a red soil paddy ecosystem.The results showed under the cycling of organic materials,the accumulation of soil organic carbon was promoted,the fraction of soil humus was improved,and the quality of soil organic matter was reformed.The annual increasing rate of soil organic carbon during 12 years was up to 0.37 g·kg^-1,while the increment of soil easily oxidized organic carbon,humic acid and fulvic acid was 3.8,3.06 and 1.63 g·kg^-1,respectively.The simulation results of SCNC model (Soil Carbon and Nitrogen Cycle) showed that after 50 years of organic materials cycling,soil organic carbon content could be increased by 8.3-18.9 g·kg^-1,and the increasing rate could be up to 62.0%-140.7% in the red soil paddy ecosystem.

Genotype differences of nitrogen content in cultivated rice seed

CHENG Jiangfeng^1,2;DAI Tingbo¹;LIU Yibai²;CAO Weixing¹

2006, 25(02):  145-148 . 

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Field experiments were conducted at Jiangxi Agricultural University to study the genotype difference of seed nitrogen content in 412 indica rice,63 japonica rice,and 82 indica hybrid rice varieties.The results showed that the seed nitrogen content of cultivated rice had a significant genotype difference,with the range from 0.85% to 2.55%,and an average of 1.39%.The average seed N content of indica hybrid rice was 1.46%,which was significantly higher than that of japonica normal rice (1.39%) and indica normal rice (1.38%),and there was no significant difference between indica and japonica normal rice.The frequency distribution of seed N content exhibited normal curve,but the centers of frequency distribution were different among three rice types.The ranges of the cumulated frequency from 25% to 75% were 1.21%-1.52%,1.21%-1.51% and 1.36%-1.53% for indica,japonica,and indica hybrid rice,respectively.Ducan's Mutiple Range test showed that the maximum derivation of N content among indica hybridrice varieties was significantly lower than that among indica and japonica rice,which indicated that the seed N content of indica hybrid rice was more concentrated than that of indica rice and japonica rice.The maximum derivation within different cultivated rice types was very large.Thus,each rice type could be classified into several groups,and the difference between groups was significant.

Effects of nitrogen supply on nitrogen metabolism and grain protein accumulation of wheat under different water treatments

FAN Xuemei;JIANG Dong;DAI Tingbo;JING Qi;CAO Weixing

2006, 25(02):  149-154 . 

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Soil water stress is the major ecological factor limiting grain quality formation of wheat,while elucidating the physiological mechanism and regulation principles of this formation is of important significance for understanding grain quality physiology and guiding wheat cultural management.In this paper,a cement pool culture experiment was conducted to study the effects of nitrogen supply rate on nitrogen metabolism and grain protein accumulation of two wheat varieties differed in grain protein content under drought and waterlogging.Three water treatments were established from anthesis to maturity,i.e.,waterlogging,drought,and moderate water supply (CK).In each treatment,two nitrogen levels of 120 and 240 kg·hm^-2 were implemented.Compared with CK,both drought and waterlogging significantly reduced the nitrate reductase (NR) activity in flag leaf,and the contents of total nitrogen and free amino acid in leaf,stem and sheath.Drought increased,while waterlogging reduced the contents of total nitrogen and free amino acid in stem and sheath,and that of protein in grain.Under drought and waterlogging,nitrogen supply increased the NR activity in flag leaf,the total nitrogen and free amino acid contents in leaf,stem and sheath,and the free amino acid and protein contents in grain.Both drought and waterlogging stress reduced grain yield and protein yield.Nitrogen supply increased grain yield under CK and drought,but reduced it under waterlogging,illustrating that nitrogen supply could obviously regulate the nitrogen metabolism and grain protein accumulation of wheat from anthesis to maturity under drought or waterlogging.

Soil iron-and manganese forms and their availability to plants

DILBAR Sultan,ANWAR Mohammed,LIN Juan

2006, 25(02):  155-160 . 

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Soil samples were collected from Yama Mountain area in Urumqi,and Tessier sequential extraction procedure was used to extract different chemical forms of soil Fe and Mn.Pot experiments were conducted to investigate the relationships of soil Fe and Mn forms with soil physical-chemical proprieties,and their availability to plants.The results showed that soil Fe was dominated by residual form,which accounted for 92.3% of soil total Fe.The proportion of other Fe forms was less than 8%.Soil Mn was dominated by Fe and Mn oxidesbound and residual forms,and their contents were 49% and 41.6% of total Mn,respectively.The proportion of other Mn forms was less than 10%.Irrigation with secondary effluent increased the availability of Fe and Mn,but irrigation with untreated wastewater was not profitable to Fe and Mn supply.The deficiency of soil Fe and Mn could be improved by adding Fe and Mn salts.Correlation analysis showed that there was certain relativity between soil physicalchemical proprieties and soil Fe and Mn forms.Soil pH,CaCO₃,organic matter,and exchangeable cations had significant effects on the availability of Fe and Mn.Stepwise regression analysis showed that Fe-Mn oxides-bound Fe was most available to plant Fe nutrition,whereas organic matterbound Mn contributed to the largest share in plant Mn availability.

Seed predation and dispersal of Castanopsis fargesii by rodents in Tiantong Mountain,Zhejiang Provinc

ZHANG Tianshu^1,3;LI Kai^1,3;WANG Qun^1,3;CAI Yongli^2,3;YANG Kun^1,3;CHEN Liqiao^1,3

2006, 25(02):  161-165 . 

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This paper studied the effects of rodents on the seed predation and dispersal of Castanopsis fargesii in Tiantong Mountain,a National Forest Park in Ningbo City of Zhejiang Province.In this Mountain,evergreen broadleaved forest is the major forest type,while C.fargesii is the dominant species.For seed release,five transects are located in three types of habitats: three in evergreen broad-leaved forest,and other two in Pinus massoniana forest and shrub land,respectively.The results showed that rodents Niviventer confucianus and Niviventer fulvescens were the main seed predators.The loss rate of C.fargesii seed was high during the beginning of observation period,and then decreased gradually.The daily seed disappearance rate (DSDR) varied in different habitats,which was the highest (7.54%) in shrub land,and the lowest (4.47%) in evergreen broad-leaved forest.Among the lost seeds,three categories of their fate were defined: (1) the seeds were consumed by rodents,and the fragments of the seeds were within the tags; (2) the seeds were cut from the tags by rodents,and their fate was unknown; (3) both the seed and the tag disappeared.The proportion of the three categories in these habitats was differed.In shrub land,the third category was the highest (97.77%),while at the second transect of evergreen broad-leaved forest,it was the lowest (8.91%).The difference was related to the vegetation composition and density in the habitats.The dispersal distance of the seeds by rodents was quite short,with the maximum of 12.7 m.

Comparison of tardigrade community structure along altitude gradient

LIU Ying,LI Xiaochen

2006, 25(02):  166-169 . 

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To study the effects of altitude on tardigrade community structure,an investigation was made on the Mount Wutai located at the north slope of Qinling Mountains.Three areas were selected at different altitudes,and 45 sampling plots were investigated.A total of 919 individuals of tardigrade belonging to 11 species,7 genera,3 families,2 orders and 2 classes,were obtained,with an average density of 816.89 individuals·m^-2.The individuals of Macrobiotus hufelandi and M.harmsworthi occupied 92.93% of the whole collection,composing the dominant groups.Simpson index,Shannon-Wiener diversity,Pielou evenness index and improved Hill index were used to evaluate the characters of tardigrade community structure in each sampling area,and Jaccard index was used to analyze the similarity between different communities.The results indicated that altitude had certain effects on the tardigrade community structure.The density,especially the population density of the dominant species,and the number of the dominant species decreased with decreasing altitude.The variation trend of species diversity was in order of medium altitude>lower altitude>higher altitude,while that of the dominant degree of community was on the contrary.The communities shared very lower similarity at different altitudes.

Comparative breeding ecology of barn swallow and red-rumped swallow in Nanchong and an experiment of interchanging their eggs and nestlings

TIAN Li;ZHOU Caiquan;HU Jingchu

2006, 25(02):  170-174 . 

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From March to October in 2004,observations were made on the breeding ecology of barn swallow (Hirundo rustica) and red-rumped swallow (H.daurica) in Nanchong of Sichuan Province,China,and the characteristics of their nestlings were studied with 16 nests of barn swallow and 14 nests of red-rumped swallow.The two species of swallows were similar in breeding ecology and features.Barn swallow immigrated to Nanchong in mid-February and to the south in mid-September,while red-rumped swallow immigrated to Nanchong after barn swallow and to the south in mid-September.The first brood of barn swallow was laid inearly April,and that of red-rumped swallows was laid in the first ten days of the month.The egg of red-rumped swallow was bigger than that of barn swallow,and the nestling weight of red-rumped swallow after shelling was slightly bigger than that of barn swallow.The accretions of body length,wing length,tail length,morphological organs and body weight of red-rumped swallow nestlings were faster than those of barn swallow nestlings.The growth curve of red-rumped swallow nestlings after interchanging eggs and nestlings was between that of red-rumped swallow and barn swallow.It was proved that interchanging the eggs and nestlings between barn swallow and red-rumped swallow was acceptable.

ffects of brood fish reproductive pairs,water transparency and ground substances on reproduction of jaguar cichlid (Cichlasoma managuense)

WANG Chun^1,2;LIN Xiaotao¹

2006, 25(02):  175-179 . 

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From the viewpoints of ethology,this paper dealt with the effects of environmental factors,such as the number of brood fish reproductive pairs per square meter,water transparency,and ground substance on the reproduction of jaguar cichlid (Cichlasoma managuense).The results showed that to some extent,the spawning rate (SR),fertilized rate (FR) and incubated rate (IR) of C.managuense were decreased with increasing number of its reproductive pairs per square meter.The spawning activity was rarely observed when the number of reproductive pairs per square meter was higher than four.Water transparency had a greater effect on FR and IR than on SR.The greater the water transparency,the longer the shortest distance between two spawning nests. C.managuense preferred to spawn on 0.20-0.50 mm-sieved sand granule,with its average SR,FR and IR up to 90%,87.78% and 79.44%,respectively.No spawning activity was observed on palm husks.The fish could spawn on coarse porcelain tiles,but its SR,FR and IR decreased markedly.

Community structure of soil collembolan under different land uses in Changchun

WU Donghui^1,2;ZHANG Bai¹;CHEN Peng³

2006, 25(02):  180-184 . 

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This paper investigated the soil collembolan in Changchun City in July and September 2003,with the focus on the species richness and abundance under farmland,park greenbelt,protective plantation forest,and natural secondary forest.The results showed that land-use type had a significant effect on the community structure of soil collembolan,and litter removal and farming activities were the main affecting factors.Litter removal considerably decreased the individual density and community diversity of soil collembolan,while farming activities changed the vertical distribution of collembolan individuals in soil profile.The types of aboveground vegetation also had a significant effect on the community structure of soil collembolan.

Inhibition of UV-absorbents on avermectin photodegradation and their enhanced control on diamondback moth (Plutella xylostella)

LIU Xuetao;LIU Feng;MU Wei;WEI Guang;LI Yanping

2006, 25(02):  185-188 . 

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By the method of high performance liquid chromatography,the decomposition of avermectin after adding ultraviolet absorbents was studied under the ultraviolet intensity of 420 lx.The results showed that under the ultraviolet,the decomposition rate of avermectin after adding UV-73 and UV-75 decreased 76.74% and 77.46% after 4 hours,37.92% and 47.09% after 8 hours,33.55% and 48.55% after 16 hours,and 23.57% and 42.09% after 24 hours,respectively.The synergism ratios of avermectin with UV-73 and UV-75 on diamondback moths in laboratory were 1.59 and 1.74,respectively,and the enhanced control effects of UV-73 and UV-75 were also higher than that of single avermectin application in the field.

Guild structure and species diversity of insects in saltcedar woodlands in Xinjiang,West China

MENG Ling,LI Baoping

2006, 25(02):  189-193 . 

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In this paper,the insects and mites in two different sized saltcedar woodlands in Fukang (larger size) and Hutubi (smaller size) in the northern Xinjiang of West China were surveyed over the season.There were approximately 100 species in 50 families and 11 orders.According to the trophic level and feeding mode,seven guilds were established,i.e.,predator,parasitoid,stripfeeder,sap-sucker,gall-maker,flower-and seed feeder,and tourist.The species richness in Fukang was higher than that in Hutubi (81 to 71),with 53 species shared by both sites,but species proportion in each guild was similar at both sites.Predators,strip-feeders and sap-suckers contained more species,with each accounting for 1/5 of total species.Sapsuckers and gallmakers were most abundant,followed by strip-feeders.Most abundant species were Adiscodiapis tamariciocola (Diaspididae), Aceria tamaricis(Eriophyidae,Acarina),and Psectrocema barbatum(Cecidomyidae),whose numbers accounted for >25% of total individuals for each species,followed by Diorhabda elongata deserticola (Chrysomelidae),Coniatus steveni (Curculionidae) and Ornitholvolva heluanensis (Gelechiidae),whose numbers accounted for 5～10% of total individuals for each species.The Pielou's evenness and Shannon-Wiener diversity indices of insect communities were greater in Fukang woodland than those in Hutubi woodland during early and mid seasons,but less than those in Hutubi woodland during the later season.The Berger-Parker dominance index of insect community in Fukang was smaller than that in Hutubi.

Invasive plants in Honghe River Basin of Yunnan Province,China

XU Chengdong^1,2;DONG Xiaodong¹;LU Shugang¹

2006, 25(02):  194-200 . 

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Honghe River Basin is the area of most abundant biodiversity in China,with many ancient flora and multiple complex ecosystems.This paper discussed the present situation of the invasive plants in this Basin,enumerated 73 species of them,and introduced the seriously harmful species such as Eupatorium adenophorum,E.odoratum,Eichhornia crassipes,Alternanthera philoxeroides,Lantana camera and Tithonia diversifolia.The control strategies of the invasive plants in Honghe River Basin were also approached from the aspects of studying their biological characteristics,biodiversity protection,recovery of degraded ecosystem,and roadregion ecosystem management.It was suggested that to reduce the anthropogenic disturbance of ecosystems and to restore native vegetations could be the effective ways of preventing the invasion of invasive plants.

Bryophytes and environmental heavy metal pollution monitoring

AN Li;CAO Tong;YU Yinghao

2006, 25(02):  201-206 . 

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Bryophyte is widely accepted as one of the most susceptible indicators for monitoring air pollution due to its characteristics of sensitivity,accuracy,and directness.In recent years,it is widely applied to the research of heavy metal monitoring.This paper presented the principles,characteristics,affecting factors,and ecological and chemical approaches of bryophytesmonitoring heavy metal pollution system,and the history,current situation,and prospects of related researches,aimed to promote further studies.

Landscape ecological control and optimization for rapid urbanization:A case study in Wujin District of Changzhou City,southern Jiangsu Province

LI Yangfan¹;ZHU Xiaodong¹;PAN Tao^1,2

2006, 25(02):  207-211 . 

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Urbanization is the target and consequence of rapid economic development of China in the early 21st century.By now,the rapid urbanization in southern Jiangsu Province has induced both positive and negative changes in urbanrural landscapes.Based on the existing ecological cybernetics methods,and applying the concepts of landscape ecological planning,landscape ecological engineering,and landscape ecological management,this paper built a conceptual framework for the landscape ecological control in the Wujin District of Changzhou City,a representative of southern Jiangsu Province,aimed to avoid the negative changes and to ecologically optimize its urbanrural landscapes.The landscape ecological control here addressed the issues of landscape patterns,landscape ecological processes,and interactions between human activities and landscapes,while the strategy consisted of an intensive and extensive understanding of regional geographical and ecological settings,some principles and targets of landscape ecological control,five patches landscape in balance,and typical landscape ecological areas construction,including Yancheng Site Protection Area,Gehu Lake patch and Taihu Lake patch,urban green space matrix,and highway corridor network.

Research advance in ecosystem services valuation

ZONG Wenjun^1,2;JIANG Deming¹;A Lamusa¹

2006, 25(02):  212-217 . 

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Natural capital,labor capital,and manufactured capital are the three capitals supporting human being’s existence and development.Compared with the latter two capitals,natural capital and its offered ecosystem services didn’t have any perfect economical valuation system.In recent years,ecosystem services valuation has made significant progress under the common concern of economists and ecologists.In this paper,the theoretical basis on ecosystem services valuation was discussed from the aspects of energetics and economy,and some improved methods and means for ecosystem services valuation were summarized,including the adjustment of unit value by biomass,identification of different spatial scales,improvement of contingent valuation method,and application of dynamic simulation models.There still exist some problems needed to be solved and improved in the future.

Contribution of macrophyte assimilation in constructed wetland to nitrogen and phosphorous removal

YIN Wei^1,2;LI Peijun¹;QIU Qiaojun³;SONG Zhiwen³;XI Junxiu⁴

2006, 25(02):  218-221 . 

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In this paper,the functions of macrophyte in constructed wetland wastewater treatment system were approached,with the major environmental factors affecting macrophyte growth analyzed.The results showed that macrophyte during its growth period had different nitrogen and phosphorous assimilation,and the removal of nitrogen and phosphorous through harvesting in autumn or winter was rather low.It was considered that macrophyte should not be harvested but used as thermo-keeping material in cold winter.Some ideas of adopting integrated treating technologies were proposed to improve the removal efficiency of nitrogen and phosphorous in constructed wetlands.

Plant community structure and species diversity of desert steppe in Ningxia

DU Qian;SHEN Hailiang;WANG Jihuai

2006, 25(02):  222-224 . 

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The analysis on the relationships between community structure,functional group composition,species diversity,and productivity of desert steppe in Ningxia showed that the community productivity was affected not only by species diversity,but also by the characters of species and environmental resources.No significant correlation was found between the coverage per functional group and the primary productivity of the community.There was a trade-off relationship between the species diversity and the numbers of species and individuals in the community.

Disaster-inducing factors and integrated climatic index for banana and litchi chilling injuries in Guangdong Province

DU Yaodong;LI Chunmei;MAO Huiqin

2006, 25(02):  225-230 . 

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Based on the 1951-2004 climate data from 86 meteorological stations in Guangdong Province,the chilling injury losses during 1955-2004,and the present research achievements,this paper studied the disaster-inducing factors and integrated climatic index for banana and litchi chilling injuries.The results showed that the critical temperature for banana and litchi chilling injuries could be determined as 5.0℃.The disaster -inducing factors included extreme minimum temperature,maximum temperature drop range,persisting days of low temperature and harmful chilling accumulation,and there were obvious correlations among these factors.According to the method of principal component analysis,an integrated climatic index was obtained,which optimally synthesized these four factors,and had clear physical meaning.Integrated climatic indexes of chilling injury in 86 stations were calculated by using the weights of these four disaster-inducing factors in Guangzhou.The value of integrated climate index of chilling injury was negatively related with the yield of banana and litchi,and could be used to analyze the degree of banana and litchi chilling injury.