Analysis on the Change of Vegetation Growth in Junggar Basin during 1982-2013

doi:10.13466/j.cnki.lyzygl.2016.05.008

Abstract

Abstract: Junggar basin is located in the northern part of Xinjiang,China.It is the second largest inland basin in China.It is necessary to understand the vegetation trends and responses to climatic change and human activities in recent decades,so as to better understand the vegetation states and trends and to make more reasonable desertification control strategy.The long time series GIMMS NDVI data from 1982 to 2013 were used to analyze the changes of vegetation.And the CRU climate datasets,including temperature,precipitation and cloud cover from 1982 to 2013 were used to analyze the influence of climatic factors on NDVI in Junggar basin.Results show that:33.03% of Junggar basin shows vegetation degradation,and about 20% of the area shows vegetation restoration.The area of vegetation degradation is mainly distributed in the arid area,where the vegetation cover is sparse.The area of vegetation restoration is mainly located in the vegetation dense area.During the past 32 years,temperatures increased significantly in Junggar Basin,which increased the water evaporation in the ardi regions while the rainfall is relative stable,so that the drought area becomes more droughty and the NDVI decreased because of the drought.While in the semi-humid region of Junggar basin,the increased temperature in recent 32 years promotes the growth of vegetation.Human activities in the past 32 years didn't impose significant influence on the vegetation growth in Junggar basin,indicating that the land desertification control needs a longer period and we should continue to strengthen the monitoring of the regional desertification state and process.

Key words: Junggar basin, NDVI, climate change, vegetation dynamic monitoring

CLC Number:

Q948

DIAO Mingjun, XIA Chaozong. Analysis on the Change of Vegetation Growth in Junggar Basin during 1982-2013[J]. FOREST RESOURCES WANAGEMENT, 2016, 0(5): 39-46.

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