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[1]NIE Tong,DONG Guotao,JIANG Xiaohui,et al.Spatiotemporal Variation and Driving Forces of Vegetation Coverage in Yan'an Area[J].Research of Soil and Water Conservation,2021,28(05):340-346.

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Spatiotemporal Variation and Driving Forces of Vegetation Coverage in Yan'an Area

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 28 Number of periods: 2021 05 Page number: 340-346 Column: Public date: 2021-08-20

Title:: Spatiotemporal Variation and Driving Forces of Vegetation Coverage in Yan'an Area

Author(s):: NIE Tong^1,2,DONG Guotao^2,3,JIANG Xiaohui¹,GU Jiahe²; (1.College of Urban and Environmental Sciences,Northwest University,Xi'an 710127,China; 2.Yellow River Conservancy Commission,Yellow River Institute of Hydraulic Research,Zhengzhou 450003,China; 3.Heihe Water Resources and Ecological Protection Research Center,Lanzhou 730030,China)

Keywords:: NDVI; driving force; geographic detector model; Yan'an City

CLC:: Q948.1

DOI:: -

Abstract:: As a sensitive factor reflecting climate change and human activities,vegetation plays an important role in maintaining the safety and changes of the ecological environment. Yan'an region which is located in the fragile region of the Loess Plateau is taken as the research area,and the geographical detector model was employed to study the impact of natural and human factors and their interactions on the spatiotemporal coverage change of vegetation in Yan'an. The appropriate range or type of impact factors was determined to promote vegetation growth. The results show that:(1)from 2000 to 2018,the average vegetation coverage in Yan'an exhibited the increasing trend with a growth rate of 0.89/decade,the ecological environment effectively improved; 95.52% of the area belonged to the improvement area and the growth rate of vegetation coverage area had been the fastest between 2000 and 2010. Areas with low vegetation coverage mainly located in downtown of Yan'an;(2)precipitation and temperature exerted the strongest influence on the spatial distribution of vegetation NDVI; the interaction between natural and human factors on vegetation NDVI was dominated by nonlinear enhancement and double factor enhancement;(3)the analysis of the range or types of various influencing factors suitable for vegetation growth in the study area provided the scientific basis for further promoting vegetation restoration and ecological protection in Yan'an City.

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Last Update: 2021-08-20