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The Early Warning of Soil Environment of Farmland

Author: WangRuiLing
Tutor: ChenYinJun；LongHuaiYu
School: Chinese Academy of Agricultural Sciences
Course: Ecology
Keywords: Environment-monitoring warning Environment-economic warning Early warning farmland Soil environment quality
CLC: X53
Type: Master's thesis
Year: 2005
Downloads: 448
Quote: 6
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Abstract


With the development of society and the progress of human being, the quality of soil environment becomes worse and worse. Many scholars have studied in quality of soil environment, but they pay more attention to biological repair of pollution soil, neglecting early warning of soil environment. So this paper fist discussion soil environment by applying early warning theory.Based of theory of economic warning, environment warning, agriculture warning, this paper attempted to introduce warning theory to soil environment. The following questions are discussed:(1) Establishing conception system of soil environment of farmland. Including definition, characteristic, and classification of early warning of soilenvironment of farmland.(2) Set up Environment-economic warning system.It contains three models: assessment, forecast, and warning.(3) Using two pre-warning methods in soil environment.One is environment-monitoring warning; it is base of monitoring data. One is environmental-economic warning; it is base of index system of environment-economic.(4) Applying multi-methods forecasting soil environmental quality.There are some main conclusions as following:(1) Soil metal pollution is serious in the Zhengzhou city suburb farmland.(2) Sewage irrigation is an important factor to soil pollution in the Zhengzhou city suburb farmland, but it not exclusive. Some factors, such as "three wastes" drainage, fertilizer and pesticide utilization, lend to soil pollution.(3) Soil environ7ment quality shows good trend, but states is not good.(4) Warning results show that, 1991-1995 soil environment quality is getting worse, 1996-2000 worst, and 2001-2005 better.There are some innovations as following:(1) Establishing conception system of soil environment of farmland.(2) Set up Environment-economic warning model.(3) Using two pre-warning methods in soil environment.

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CLC: > Environmental science, safety science > Environmental pollution and its prevention > Soil Contamination and Control
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