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Table of Content
10 October 1984, Volume 3 Issue 05
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A PRELIMINARY STUDY ON THE CHARACTERISTICS OF FOREST DESTRUCTIVE INSECT FAUNA AND THEIR SUCCESSION IN NORTHEASTERN CHINA
Fan Sanyang
1984, (5): 1-4,14.
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The present paper gives the characteristics of forest destructive insect fauna and their succession in Northeastern China. The succession pettern is shown in the following figure:
FOREST VEGETATIONS IN JIANGSU PROVINCE AND THEIR TRANSFORMATION AND UTILIZATION
Liu Fangxun, Huang Zhiyuan
1984, (5): 5-9.
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This paper discusses the component characteristics, distribution patterns and fundamental types of forest vegetations on Jiangsu province and the problems on their transformation and utilization.
A SUPERFICIAL VIEW ON THE ECOLOGICAL ENVIRONMENT OF HAINAN ISLAND
Jing Ke
1984, (5): 10-14.
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The author participated in the on-the-spot comprehensive survey and data processing about the macro-agricultural construction and ecological equilibrium of Hainan Island in 1981.This paper discusses in more detail the present situation of this island's ecological environment, analyses the causes of its deterioration and puts forward some suggestions on the establishment of good ecological environment.
RELATIONSHIP BETWEEN S-CONTENT OF TREE LEAVES AND AIR SO
2
-POLLUTION IN TIANJIN
Chen Qingnan
1984, (5): 15-19.
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Based on the determination of S-content of tree leaves in various region of Tianjin, it's proved that there is a significant correlation between this content and SO
2
content in air. It provides a scientific basis for using trees to monitor the air SO
2
and evaluate the environmental quality.
CAUSE ANALYSES ON THE ECOLOGICAL IMBALANCE OF SILKWORM SITES IN LIAONING PROVINCE
Sun Wu
1984, (5): 20-22.
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This paper recounts the expression and cause of ecological imbalance of silkworm sites in Liaoning province and puts forward some improvement suggestions about management of organization system and construction of silkworm sites.
THE ECOLOGICAL BASIS OF AGRO-ECOLOMICS
Deng Honghai
1984, (5): 23-27.
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Both the interconnections between agro-ecology and agro-ecolomics and their differences are analysed through the examination of the nature of agro-ecolomical topics.
TYPES AND DISTRIBUTION PATTERNS OF VEGETATION IN SOUTHEASTERN ASIA
Yan Chongchao
1984, (5): 28-32.
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Southeastern Asia is enormously rich in vegetations. The total number of the species of flowering plants is 30,000—35,000. Many environmental factors affect growing plants and induce a wide range of vegetation types. There are nine vegetation types in Southeastern Asia: 1) tropical rainforest; 2) tropical monsoon forest; 3) montane rainforest; 4) montane monsoon forest; 5) mangrove; 6)sandy beach forest; 7) heath forest; 8) peat swamp forest and 9) secondary forest.
FISH-FARMING IN PADDY SOILS AND WATER CONSERVANCE FACILITIES
Peng Yongan
1984, (5): 33-35.
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This paper gives a theoretical approach to the ecological problems on fish-farming in gleyed paddy soils of lake land. An assumption is put forward to construct rational water conservancy facilities (fish-canals), which may have practical meanings for combined producing rice and fish.
THE ROLE OF WATERHYACINTHS IN SEWAGE ECOLOGICAL TREATMENT SYSTEM AND THE APPROACHES TO THEIR UTILIZATION——Part 1: The Biological Characteristics of Waterhyacinths and the Effects of Environmental Factors on Their Growth
Zhou Zejiang, Yang Jinghui
1984, (5): 36-40.
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This paper reviews the development of researches on waterhyacinths. The biological characteristics of waterhyacinths are described, and the effects of some evironmental factors on the growth of waterhyacinths are discussed.
ESTABLISHING A FAVOURABLE CIRCULATING ECO-ENVIRONMENT FOR ENSURING THE OVERALL AND SUSTAINED HIGH-PRODUCTION IN AGRICULTURE
Yan Changsheng
1984, (5): 41-43.
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Nowadays, the agricultural production is still restrited greatly by the natural circumstances This article suggests that it is necessary to establish a favourable eco-environment firstly. Take Ka Zuo county of Liaoning province as an example. The main measures are:1. To strengthen resource protection and prevent deterioration of eco-environment;2. To strengthen the investigation of natural resources and the overall agricultural regionalization;3. To combine the engineering construction with the biological practices;4. To improve and enhance soil fertility and establish a stable and high-productive farm environment.5. To regulate the cropping system and the productive structure.
AGRICULTURAL REGIONALIZATION IS AN KIND OF ECOLOMIC REGIONALIZATIONS
Chen Oingshuo
1984, (5): 44-47.
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The present paper points out that the basic point in the work of agricultural regionalization must be ecolomical. The ecolomical indexes used for regionalizing flatland counties are also discussed.
SOUTHWARD MIGRATION OF CHINESE WILD ELEPHANT AND FOREST DESTRUCTION
He Zhaoxiong
1984, (5): 48-51,58.
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According to the historical variation of elephant population's biohabitat and micro-biohabitat, the southward migration of chinese wild elephant and the decrease of the number of individuals in populations, the historical destruction of forest is approached in this paper.