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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (24): 77-83.doi: 10.11924/j.issn.1000-6850.casb2022-0750

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Analysis of Vegetation Coverage Change in Kedong County in 2000-2020

WANG Jiahao(), XIAO Yang(), ZHANG Ruihao, WANG Yan, NIU Yuxuan, HE Xuyang   

  1. College of Advanced Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080
  • Received:2022-08-29 Revised:2022-11-02 Online:2023-08-25 Published:2023-08-23

Abstract:

Vegetation coverage is not only an index parameter for quantifying the surface coverage of plant communities, but also a basic parameter for quantitative research of remote sensing physical model. The change of vegetation coverage reflects the change of regional ecological environment. Taking Kedong County as the research area, and based on the remote sensing data sets of GlobeLand30 and Landsat from 2000 to 2020, the evolution trend of vegetation coverage was studied by means of remote sensing image interpretation and superposition analysis. The conclusions are as follows:(1) cultivated land was the main type of land use in the study area, and the land use type developed from cultivated land > grassland > woodland > water area > construction land > other land > special land to cultivated land > grassland > woodland > construction land > special land > water area > other land; (2) vegetation coverage types were advancing from low coverage to high coverage, showing a development trend from low to high as a whole; (3) among the land use types, the vegetation coverage of cultivated land, grassland, water area, construction land and other land showed an increasing trend, while the woodland remained unchanged, while the special land showed a decreasing trend. On the whole, the vegetation in Kedong County grew well from 2000 to 2020, and the vegetation coverage types developed from low coverage to high coverage, which showed a development trend on the basis of maintaining stability.

Key words: land use, vegetation coverage, evolution trend, Kedong County