松嫩草原碱茅群落环境因素与凋落物分解季节动态

应用生态学报 ›› 2001, Vol. ›› Issue (6): 841-844.

松嫩草原碱茅群落环境因素与凋落物分解季节动态

王娓, 郭继勋

东北师范大学环境科学系, 长春, 130024

收稿日期:2001-03-22 修回日期:2001-05-17 出版日期:2001-11-25
通讯作者: 王娓,女,1972年生,讲师,博士生,主要从事微生物生态学与草地生态学研究,发表文章8篇E-mail:Wendy-wangw@163.net
基金资助:
国家自然科学基金(39970537)和国家"973"重点基础研究发展规划资助项目(G2000018608).

Seasonal dynamics of environmental factors and decomposition rate of litter in Puccinellia tenuiflora community of Songnen grassland of China

WANG Wei, GUO Jixun

Department of Environmental Sciences, Northeast Normal University, Changchun 130024

Received:2001-03-22 Revised:2001-05-17 Online:2001-11-25

摘要/Abstract

摘要： 对碱茅群落凋落物分解季节动态与微生物呼吸速率、土壤有机质、土壤C/N、土壤温度、土壤水分等11种环境因素的季节动态进行了研究.结果表明,凋落物分解季节动态呈单峰曲线,8月中旬达最大值8.109mg·g^-1·d^-1;凋落物分解指数为1.93,95%凋落物分解约需4a:微生物呼吸速率季节动态呈单峰曲线,7月中旬达最大值,为11.4g·C·m^-2·d^-1;凋落物分解速率同土壤有机质含量、土壤C/N显著负相关;凋落物分解速率同土壤温度显著正相关.

关键词: 凋落物, 分解速率, 环境因素, 季节动态, 碱茅群落

Abstract: This paper discussed the seasonal dynamics of eleven environmental factors and decomposition rate of litter in Puccinellia tenuiflora community.The environmental factors included microorganism respiration rate,soil organic matter content,the ratio of carbon to nitrogen of soil,soil temperature,soil water content,and etc.The seasonal dynamics of decomposition rate of litter showed a single-peak curve with the maximum 8.109mg穏^-1 穌^-1 in the middle August.The decomposition index of litter was 1.93,and 4 years would be needed to decompose 95% of the litter accumulated in the ground.The seasonal dynamics of microorganism respiration showed a single-peak curve with the maximum 11.4g稢穖^-2 穌^-1 in the middle July.The decomposition rate of litter was negatively correlated with soil organic matter content and the ratio of C/N of soil,and positively correlated with soil temperature.

Key words: Litter, Decomposition rate, Environmental factors, Seasonal dynamics, Puccinellia tenuiflora community

中图分类号:

Q948.12

王娓, 郭继勋. 松嫩草原碱茅群落环境因素与凋落物分解季节动态[J]. 应用生态学报, 2001, (6): 841-844.

WANG Wei, GUO Jixun. Seasonal dynamics of environmental factors and decomposition rate of litter in Puccinellia tenuiflora community of Songnen grassland of China[J]. Chinese Journal of Applied Ecology, 2001, (6): 841-844.

参考文献

[1] Agriculture Special Interest Committee of China Agriculture Association(中国农业学会农业学专业委员会)1983.Routine Analysis Method of Soil Agricultural Chemistry. Beijing: Science Press. 95～ 215(in Chinese)
[2] Anderson JPE. 1982. Soil respiration. In: Page L ed. Methods of Soil Analysis, Chemical and Microbiological Properties. American Soil Organic Carbon. Agron Monogr, 92: 831 ～ 871
[3] Cai X-M(蔡晓明)2000.Ecosystem Ecology Beijing:Science Press. (in Chinese)
[4] Chen C-D(陈昌笃)1984 The protection of withered grass and litter-An ecological problem worth to be attached great importance. Chin J Ecol(生态学杂志),6:31～32(in Chinese)
[5] Chen L-Z(陈灵芝)1984 The study on litter decomposition of hampsfell brakc grassland ecosystem in England Acta Phytoecol Geobot Sin(植物生态学与地植物学丛刊),6(4):302～313(in Chinese)
[6] Chen Z-Z(陈佐忠)1982 Prelininary measurement of decomposition rate of plants and house dung in grassland.Study of Grassland Ecosystem(草地生态研究),(3):103～106(in Chinese)
[7] Daubenmire R,Prusso DC 1963 Studies of the decomposition rate of tree litter.Ecology,44(3):589～592
[8] Facell JM,Pickett STA.1991 P1ant litter:Its dynamics and effects on plant community structure.Bot Revii,57:1～32
[9] Guo J-X(郭继勋)1994.Decomposer Subsystem of Lymus chinensis Grassland Changchun:Jilin University Press 74～76(in Chinese)
[10] Guo J-X(郭继勋)1990 Prel iminary study on the formation of litters in Lynus chinensis grasslnd in Songnen plain Chin J Ecol(生态学杂志),9(1):11～14(in Chinese)
[11] Guo J-X(郭继勋),Zhu T-C(祝廷成).1994.Study on thelitter acca mulation in Lymus chinensts grassland Acta Ecol Sin(生态学报),14(3):255～261(in Chinese)
[12] Guo J-X(郭继勋).Zhu T-C(祝廷成)1992 Study on litter decomposit ion in Lymuschinennsis grassland:Decomposition rate and lost rate of dominant plants Acta Ecol Sin(生态学报),12(4):295～299(in Chinese)
[13] Guo J-X(郭继勋),Zhu T-C(祝廷成)1993.Study on litter decomposition in Lymus chinensis grassland-relationship of litter decomposition to ecological environment Acta Ecol Sin(生态学报),13(3):214～218(in Chinese)
[14] Huang CY(黄昌勇)2000 Pedology.Beijing:Agricultural Press(in Chinese)
[15] Jiang Y-X(蒋有绪)1981 The connunity function of litter layer of Abies forest in western part of Sichuan. Acta Phytoecol Geobot Sin(植物生态学与地植物丛刊),5(2):89～98(in Chinese)
[16] Li J-Z(李家藻)1984.The study on the decomposition function of fiber,root and litter in alpine meadow Acta Biol Plat Sin(高原生物学集刊),172:107～113(in Chinese)
[17] Mu C-Y(木村允)1981.Measuring Method of Biomass of Terrestrial Plant Community. Beijing: Science Press. 17 ～ 23 (in Chinese)
[18] Olson JS. 1963. Energy storge and balance of producers and decomposers in ecological system. J Ecol, 68(5): 1190 ～ 1200
[19] Upadhyay VP, Singh JS. 1989. Patterns of nutrient immobilization and release in decomposing forest litter in central Himalaya, India. J Ecol,77:127～ 146
[20] Waksman SA, Gerretsen FC. 1931. Influence of temperature and moisture upon the nature and extent of decomposition of plant residues by microorganisms. Ecology, 12: 33 ～ 60
[21] Whittaker RH. 1975. Communities and Ecosystems. 2nd ed. MacMillan, NY.
[22] Xi' er OW. 1983. The mechanism and method of decompositio of organic matter. Forest Ecosystem. Beijing: China Forestry Press. 286 ～288(in Chinese)
[23] Xu G-H(许光辉)1982.Microbiological characteristic during the process of decomposinglitterin forest ecosystem.Acta Ecol Sin(生态学报),2(1):11～19(in Chinese)