Table of Content

10 July 1983, Volume 2 Issue 03

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SEVERAL PROBLEMS ON THE RATIONAL STRUCTURE OF AGRICULTURAL PRODUCTION AND AGRO-ECOLOGY IN TAI LAKE AREA OF JIANGSU PROVINCE

Ma Xiangyong

1983, (3):  1-6. 

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In this paper, four types of rational structure of agricultural production in Tai Lake area of Jiangsu Province are analysed and approached.It's considered that the rational structure of agricultural production is the result of comprehensive development of agriculture, forestry,animal husbandry,sideline production, fishery and industry,which enables the natural resources to be protected and utilized rationally, the environmental pollution in rural area to be controlled and the agro-ecosystem to be well coo dinated. Such a structure is the only way for the intensive management of agriculture.

NATURAL PROTECTION AND ECOLOGICAL EQUILIBRIUM——On the Forest Ecosystem of Xishuangbanna and Yunnan Plateau

Wang Yechu

1983, (3):  7-10. 

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This paper deals with the relationship between water and soil balance in the tropical seasonal rain forest ecosystem of Xishuangbanna and Yunnan Plateau and in the man-made rubber tree plantations of these areas.

ECOLOGICAL OBSERVATIONS ON TAKYDROMUS WOLTERI

Liu Mingyu, Ji Daming, LÜ Changsheng, QÜ Guihua

1983, (3):  11-16. 

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According to the collections in the open fields and indoor observations from 1979 to 1981, descriptions on the dlstributions,habitat environment,eating patterns, water-drinking, slough and some other laws of activities of Takydromus wolteri are made by the author, and the breeding and growth of the larvas are described in more detail.

AN OBSERVATION ON THE COEVOLUTION OF WOODPECKER AND LONGICORN

Yan Junjie

1983, (3):  17-20,10. 

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This paper describes the relationship of absorbing nourishment between woodpecker and longicorn. Woodpecker pecks the elder larvas and chrysalises of longicorn in winter and spring, and longicorn develops and breeds in summer and autumn to maintain the lasting of its population. Such a fixed relationship of absorbing nourishment is a phenomenon of coevolution.

COAL FORMATION AND PALEOPHYTOECOLOGY IN FANZHI BASIN

Shi Chenglong, QÜ Xingwu

1983, (3):  21-23. 

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According to the study of trunk and coal balls contained in lignite, the paleophytoecology and paleogeographic environment of younger woody lignite in Fanzhi basin are discussed. The relationship between coal formation and paleophytoecology is also approached.

TREE PLANTING BY MEANS OF DITCHING IN BAIYINTALA DISTRICT AND ITS ECOLOGICAL SIGNIFICANCE

Tao Dali, Peng Ruilin

1983, (3):  24-27. 

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The method of tree planting by means of ditching combined with irrigation is introduced in this paper. The plantation survival, growth rate, variation of soil moisture and other ecological conditions between inside and outside ditches are also given.

THE SUBJECT AND THE TASK OF AGRO-ECOLOMIC

Deng Honghai

1983, (3):  28-30. 

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This paper discusses the historical and logical necessity of appearance of agro-ecolomics.

ECOLOGICAL BASIS OF MIXED BREEDING VARIOUS SPECIES OF FISH WITH THE APPLICATION OF FERTILIZERS IN PONDS

Hu Baotong

1983, (3):  31-33. 

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This paper briefly discussed the ecological basis of mixed breeding various species of fish with the application of fertilizers in ponds. Some ideas were pat forward for the maintenance of the equilibrium of fishpoad ecosystem.

RECENT TREND OF STUDIES ON PURIFICATION OF SEWAGE BY ECOSYSTEM ENGINEERING

Yang Jinghui, Zhou Zejiang

1983, (3):  34-38. 

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This paper reviewed the mechanism and efficiency of purification of sewage by stabilization pond and treatment system, discussed the potential damage of sewage irrigation to soils and crops, gave an exposition of the choice and design of ecosystem engineering, and analysed its technical feasibility and economic benifits.

ON THE MATHEMATICAL MODELLING OF SOIL SYSTEM

Liu Duosen

1983, (3):  39-41,16. 

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Three ways of establishing mathematical model of Soil System were introduced by the author.1. by systematic analyses;2. by theoretical deduction, according to the laws and principles of physics, chemistry and physicochemistry in particular; and 3. by mathematical statistics, according to the experimental results.

A brief intreduction on the isolation and pureculture of Ncdole Endophytes (Frankia) of Non-leguminous N-fixing trees

1983, (3):  42-43,30. 

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Five strains of endophytes (Frankia) were successfully isolated from root nodules of Alnus cremastogyne Burk., A. hirsuta Turcz., A. glutinosa(L.)Gaertn., A. japonica Sieb. et Zucc., A. nepalensis.Eight strains of endophytes (Frankia) were successfully isolated from root nodules of Elaeagnus oxycarpa., E.multiflora Thunb. ovata, E.gonyanthes, E.mollis., Hippophae rhamnoides., H. rhamnoides L. var. porcera.A strain of endophyte (Frankia) was isolated from root nodules of Myrica rubra Sieb.et Zucc..The scanning electron and light microscope micrographs of sporangia, spores, vesicles and hyphae etc. for all the strains described in this paper are attached to it.

Ecological characteristics of the genesis of Lolium temuletum L. in Aheqi County and its ecological prevention and control.

Wang Jixian

1983, (3):  44-44,38. 

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This paper introduced the ecological characteristics of the genesis of Lolium temulentum L. in Aheqi county and the experiences of controlling its genesis through altering ecological conditions, and affirmed the significance of ecological prevention.

Ecological geography of Takin in mountainous regions of Southern Gansu

Chen Jun

1983, (3):  45-45,23. 

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From the angels of the distribution and the geographical characteristics of distribution areas, the ecological geography of takin in Southern Gansu Province is briefly introduced in this paper.