Dynamic Change of Vegetation Coverage and its Driving Forces in Different Landforms on Yushenfu Mining Area from 1990 to 2019

doi:10.13466/j.cnki.lyzygl.2021.05.016

Abstract

Abstract:

Vegetation coverage is an important indicator reflecting the dynamic changes of the ecological environment in the mining area.In order to explore the temporal and spatial evolution of vegetation coverage of loess hilly area and windy sand land in Yushenfu mining area,the temporal dynamic and spatial distribution,change trend and driving forces of of vegetation coverage were studied based on Landsat data in different landform types on Yushenfu mining area from 1990 to 2019,using pixel dichotomy model,partial correlation analysis and residual analysis.The results showed that:1)In the term of temporal distribution,the average vegetation coverage increased from 33 % to 45 % in the Yushenfu mining area from 1990 to 2019,the vegetation improvement area was three times of the degraded area,and the increasing rate of vegetation coverage improved since 2005,but the vegetation coverage showed a downward trend in the loess hilly area from 1990 to 1995 and in the windy sand land from 2000 to 2005;2)In the term of spatial distribution,the mainly vegetation coverage levels in the loess hilly area and windy sand land were 30%~60 % and 15%~45 % respectively,and the average growth rate of vegetation coverage in the loess hilly area was about 2 times of that in windy sand land from 1990 to 2019;3)From 1990 to 2019,the relative contribution rates of climate change and human activities to the changing of vegetation coverage were 45.48% and 54.52%,respectively,and the main driving forces that caused changes of vegetation coverage in loess hilly areas and windy sand land in 1990—2000 and 2000—2019 were human factors and climatic factors,respectively.

Key words: vegetation coverage, coal explore, temporal and spatial change, ecological environment monitoring, Yushenfu mining area

CLC Number:

TP79
X144

DU Huadong, NING Benyan, BAI Mengtong, FAN Penghui. Dynamic Change of Vegetation Coverage and its Driving Forces in Different Landforms on Yushenfu Mining Area from 1990 to 2019[J]. FOREST RESOURCES WANAGEMENT, 2021, 0(5): 121-130.

Figures/Tables 9

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时间	传感器	波段合成
1990-08-29	Landast5-TM	4,3,2
1995-07-26	Landast5-TM	4,3,2
2000-07-23	Landast5-TM	4,3,2
2005-07-05	Landast5-TM	4,3,2
2011-07-22	Landast5-TM	4,3,2
2015-07-01	Landsat 8 OLI_TIRS	5,4,3
2019-07-19	Landsat 8 OLI_TIRS	5,4,3