Dynamic evaluation and partition early warning system for region land deterioration

Abstract

The invention belongs to the field of agricultural resources and environment, in particular to a dynamic evaluation and warning system for regional ecological environment. Through the dynamic monitoring and evaluation on the regional land degradation and the design of division warning system, the dynamic evaluation and warning system can scientifically, completely and dynamically describe the space-time evolution of regional agricultural resources and environment, which comprises the establishment of an index system, the determination of indexes ordering, the calculation of index weight and the development of effect testing software; dynamic and quantitative simulation to land degradation is carried out according to time sequence, while the division warning to regional land degradation is carried out according to geographical space. The invention can not only trace the evolution path of resources and environment, but also reveal the future evolution trend of regional land degradation in every period and every region to find out regional difference and limiting factor of land degradation and put forward resources optimal allocation model of sustainable development and countermeasure of sustainable development on regional agriculture.

Description

technical field [0001] The invention belongs to the field of agricultural resources and environment. It is an important method for dynamic quantitative evaluation and early warning of resources and environment in both time and space. On this basis, dynamic linear simulation and dynamic trend early warning of regional environmental evolution trends can be carried out, providing scientific information for macro-control in the fields of agriculture and social development. theoretical basis. Whether human beings can develop sustainably is related to the guarantee and support capabilities of resources and environment. How to judge the coordination relationship between sustainable development and resource and environment systems is the key to correctly grasping the trend of sustainable development of human beings. technical background [0002] Land degradation refers to the decline or loss of land productivity. Its manifestations include soil erosion, land desertification, soil ...

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Problems solved by technology

[0027] However, so far, most of the research work at home and abroad has focused on the evaluation of the spatial change or degradation of a specific region or specific land type, and rarely involves the dynamic change and spatial distribution of different degradation types in time series difference

Moreover, most of the research work on land degradation assessment methodology and the quantitative, dynamic, comprehensive and practical aspects of the assessment index system, as well as scale conversion, is still at the exploratory stage.

[0028] Although my country's land degradation research has made certain and characteristic progress in some aspects, it is still in its infancy as a whole.

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