A method for information data collection and analysis of valley grassland degradation

Abstract

The invention discloses a method for information data collection and analysis of grassland degradation in river valleys. The specific steps include: acquiring NDVI data, acquiring DEM data, information processing, data conversion, vegetation coverage inversion, grassland degradation grade division, grassland degradation Cold / hot spot analysis, grassland degradation spatio-temporal change analysis, grassland degradation cold / hot spot distribution and evolution, valley grassland degradation altitude differentiation, grassland coverage analysis, grassland degradation factor analysis, the present invention can use the grassland degradation grade division map, from the whole The data analysis is more intuitive for areas with obvious grassland degradation levels in the above analysis; the cold / hot spot analysis shows that the spatial difference between grassland degradation and improvement is more obvious; through the grassland coverage analysis, it is possible to quantitatively analyze and express different coverage levels. Grassland degradation characteristics; through the analysis of climate temperature, rainfall and grazing conditions, the analysis of grassland degradation is more accurate.

Description

technical field [0001] The invention relates to the technical field of grassland degradation and improvement, in particular to a method for collecting and analyzing information and data of grassland degradation in river valleys. Background technique [0002] Under irrational use, the process of retrograde succession and productivity decline of grassland ecosystems is called grassland degradation, also known as grassland degradation. The main manifestations are the decline of the height, coverage, yield and quality of grassland vegetation, the deterioration of soil habitat, and the decline of production capacity and ecological function. The long-term and large-scale grassland degradation not only causes the decline of the productivity of the grassland itself, but also causes the deterioration of the ecological environment and threatens the survival and development of human beings. Under the influence of unfavorable natural factors such as drought, wind and sand, water erosio...

AI Technical Summary

Problems solved by technology

[0003] The impact of grassland degradation on the environment is particularly severe. The existing methods for collecting and processing grassland degradation information are too simple and have low applicability

However, there are many river valleys in my country, and the ordinary grassland degradation information collection and processing methods cannot conduct reasonable analysis for the more complex terrain in river valleys, the data is inaccurate, and the results of data processing are low in accuracy and reliability, and cannot be applied to river valley grasslands. manage

Images