Table of Content

10 October 1983, Volume 2 Issue 04

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TWO EXAMPLES FOR ESTABLISHING AND IMPROVING ECOLOGICAL EQUILIBRIUM ON HILLY LANDS OF RED SOIL IN ZHEJIANG PROVINCE

Cai Renhou

1983, (4):  1-3. 

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Taking two facts from Zhejiang Province as examples, the author illustrates that for the improvement and utilization of hilly lands in red soil region, it's necessary to take the biological measures as main ones, i.e.,to plant economic forests, to gradually restore the vegetation on hilly lands of red soil and take the engineering measures as coordination, making the ecology of this region equilibrated.

AN APPROACH TO THE FACTORS INDUCING SHARP DECREASE OF POPULATION AMOUNTS OF ANOPHELES HYRCANUS SINENSIS WIEDEMANN IN RICE-PLANTING REGION OF HUQIAO PFOPLE'S COMMUNE OF HUI COUNTY

1983, (4):  4-7. 

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According to 5 years observation, the author considers that the factors inducing sharp decrease of populaticn amounts of Anopheles hyrcanus sinensis Wiedemann in rice-planting region of Huqiao people's commune of Hui County are mainly: 1. The reform of irrigation system of rice,i.e., the popularization of damping irrigation method; 2. The decrease of surface water and 3. The harness of environment. Such a measure of ecological prevention and control efficiently control the population amounts of Anopheles hyrcanus sinensis Wiedemann in this region.

THE VEGETATION OF MT. HUANGSHAN IN ANHUI PROVINCE

Zheng Shizhang

1983, (4):  8-11. 

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The present paper makes a historical review of the study and describes the characters of main vegetations in Mt. Huangshan. The author emphasizes that for the development of tourism, much attention must be paid to the conservation of nature.

STUDIES ON THE ECOLOGICAL DISTRIBUTION OF HETEROTROPHIC BACTERIA ON WHEAT ROOTS

Hun Jingshu, Chai Ming, He Xiuliang, Duan Junying, Zhang Xianwu

1983, (4):  12-15,11. 

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In this paper, the ecological distribution of heterotrophic bacteria on wheat rhizoplane and within roots were reported. The total amount of bacteria attained maximum during flowering stage. The dominant bacterial groups on the rhizoplane were Pseudomonas, Acinetobacter, Flavobacterium, Enterobacteriaceae, while bacteria within wheat roots were Pseudomonas, Photobacterium, Flavobacterium, Xanthomonas, Staphylococcus. The relationship between plant nutrition and bacteria must await further investigation.

AN INVESTIGATION OF ANIMAL AND INSECT RESOURCES IN MOUNTAINOUS REGIONS OF NORTH GUANGDONG

Lin Shanxiang

1983, (4):  16-19. 

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In 1981, the author investigated the animal and insect resources in mountainous regions of north Guangdong. From the fact of denudation and misuse of chemicals in farmland, this paper illustrates the effects of the changes of forest-and agroecosystem on the structure and amount of animal and insect population and the harm of the decrease of animals and beneficial insects to the forest and agricultural production.

ECOLOGICAL ENGINEERING——APPLICATION OF PRINCIPLES OF ECOLOGICAL SYSTEMS

Ma Shijun

1983, (4):  20-22. 

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According to the properties and main objectives, the principles of ecological engineering are used for:1. multilevel and graded utilization of substance and energy, 2. transformation and regeneration of substance 3. non-pollution inducing technology and 4. complete metabolic process of multi-functional system.

SOIL ANIMALS AND TERRESTRIAL ECOSYSTEM

Zhang Yongzu, Cui Zhendong

1983, (4):  23-26. 

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This paper is an introduction of the functions of soil animals which participate either in the disintegration and chemical weathering of parent materials or in the decomposition of dead organisms in soil within a terrestrial ecosystem.The formation of horizons in soil is a an important background for collecting or studing soil animals. The fauna in mature and undisturbed soils shows a quantitative and qualitative vertical stratification.Many soil animals can accumulate certain substances in their bodies only in small amounts. This could also be of importance in soil, contributing most effective decompositing environment to terrestrial ecosystem.

ON THE ESTABLISHMENT OF A GRAND AGRO-ECOSYSTEM IN XINJIANG

Zhang Xuezu, Zhu Maoshun, Yan Gengxue

1983, (4):  27-30. 

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According to the characteristics of arid-forest-and grassland, as well as the imbalance of ecological equilibrium in Xinjiang, an approach to the establishment of a grand agroecosystem is suggested in this paper.

THREE NETWORK STRUCTURES OF FOREST ECOSYSTEM

Zhang Xinwei

1983, (4):  31-33,37. 

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In this paper, three network structures of forest ecosystem and their relation to forest production are expounded from the respects of organisms, environments and artificial regulation and control. It may be used for reference to the forest production, research work and forest management.

SOME PROBLEMS FACED BY THE ECOLOGICAL BALANCE OF YANGTZE RIVER BASIN

Wang Chaojun

1983, (4):  34-37. 

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Based on the facts of sharp decrease of natural resources, especially that of forest, water, soil and fishery resources, some problems faced by the ecological balance of this basin are put forward in order to remind man's attention.

RECORDS OF NATURAL PROTECTION IN OUR ANCIENT TIMES

Feng Junshi

1983, (4):  38-40. 

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According to the records of natural protection in ancient books before Qin and Han Dynasty, This paper discusses the thoughts of natural protection in our ancient times and the origin of the thinking on the organization of production on the basis of natural laws.

The population components of Giant Salamander in Shangnan region of Shanxi Province

Song Mingtao

1983, (4):  41-42. 

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This paper describes the observation results on the population components of Giant Salamander and pats forward some protective measures needed to adopt in the future time.

Planting duckweed in rice field can maintain ecological equilibrium

Cui Changyuan

1983, (4):  42-42,54. 

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From the results of many years' field experiments, the author concludes that Planting duckweed in rice field can increase soil nutrients and inhibit weed growth, being an effective measure for the control of environmental pollution.