The Early-Warning Analysis Of Cultivated Land Quality From The Angle Of Ecological And Economical System

The cultivated land protection result reflects in the area quantity, simultaneously also manifests in the quality. But the latter often receives the neglect. In our country, the degeneration of cultivated land quality caused by the unreasonable use has become a main factor that restricts the farming productivity. In view of the fact that cultivated land quality would change continuously, people have carried out different types of dynamic monitor. But we know the change through the monitor result only after the cultivated land quality degeneration has occurred. This time, the cultivated land production capability as well as the cultivated land using benefit has been harmed, and the task of rebuilding the degenerated cultivated land quality character becomes hard. Therefore, we must carry on the cultivated land quality early-warning research.This article will define cultivated land quality as person and land's correlation, investment level of cultivated land use, ecological environment background, effect and investment potential of cultivated land from the angle of cultivated land ecology economical system . On this base, it makes detailed analysis on the diversification and early-warning of cultivated land quality. It takes Wuxi in Jiangsu province as an example to do the demonstration research. The whole paper has altogether six chapters.The first chapter Introduction Introduce this article's research background, research intention and significance. Make the summary of domestic and foreign research at present. Elaborate the paper's researching content, analysis method and technical route.The second chapter Basic concept and related theory Define the basic concept of cultivated land and cultivated land quality. Point out the concept and method of early-warning, expound related theory of the research.The third chapter Early-warning research of cultivated land quality from the angle of ecological and economical system First introduce the principles of cultivated land quality early-warning research. Then according to the cultivated land quality concept and the choosing principle of index which has limited, it establishes this research's index system through the comparison of several commonly used index systems of cultivated land quality's change. Propose the researching method of cultivated land quality's change. Propose the solution to the technical problems such as indexes' numbering dimensions, factor weight's fixing, index values' forecasting, calculating of cultivated land's comprehensive index value as well as the dividing of alerting limit.The fourth chapter Demonstration analysis of cultivated land quality's early-warning research from the angle of ecological and economical system Taking Wuxi city in Jiangsu Province as an example, do demonstration research to cultivated land quality's early-warning of this city. Through the research, educes the conclusion: Along with time series extending, Wuxi city's cultivated land quality level assumes the undulation condition, the overall cultivated land quality level has the dropped slightly. From 2005 to 2017, Wuxi city's cultivated land quality is at the condition: of medium degree warning. To the year 2018, Wuxi city's cultivated land quality will be at the condition of heavy degree warning.The fifth chapter Result analysis and countermeasure suggestion On the base of cultivated land quality's alarming degree in Wuxi city in the future, carry on the concrete analysis to the forecasting result from the angle of person and land's correlation, investment level of cultivated land use, ecological environment background, effect and investment potential of cultivated land. And point out the countermeasure proposal.The sixth chapter Ending words Introduce main achievement and conclusion, Proposes the this article's following research.