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[1]JIA Lu,REN Zongping,LI Zhanbin,et al.Temporal and Spatial Evolution of Vegetation Coverage in Xi’an City from 2000 to 2013[J].Research of Soil and Water Conservation,2019,26(06):274-279.

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Temporal and Spatial Evolution of Vegetation Coverage in Xi’an City from 2000 to 2013

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 26 Number of periods: 2019 06 Page number: 274-279 Column: Public date: 2019-10-17

Title:: Temporal and Spatial Evolution of Vegetation Coverage in Xi’an City from 2000 to 2013

Author(s):: JIA Lu¹, REN Zongping¹, LI Zhanbin^1,2, XU Guoce¹, SHI Peng¹, ZHANG Yixin¹, WANG Bin¹; 1. State Key Laboratory base of Eco-Hydraulic Engineering in Arid Area, Xi’an University of Technology, Xi’an 710048, China;
2. State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Institute of Soil and Water Conservation, CAS & MWR, Yangling, Shaanxi 712100, China

Keywords:: vegetation coverage; mutation; center of gravity transfer

CLC:: Q948;TP75

DOI:: -

Abstract:: With the implementation of the policy of returning farmland to forestland in the Loess Plateau, the changes in vegetation coverage in Xi’an City have changed significantly in the past decade. In order to conduct in-depth research on the changes of vegetation coverage in Xi’an City, the Mann-Kendall trend test and Hurst index, Pettitt test were used to analyze the changes of vegetation coverage in Xi’an City from 2000 to 2013, and the spatial variation of vegetation coverage change in Xi’an City was analyzed by using the gravity transfer model and relative development rate difference. The results showed that:(1) the moderate variation area of vegetation coverage in Xi’an City accounted for 10.02% of the total area; (2) the area of vegetation coverage in Xi’an City increased by 86.54%, and the area of positive persistence accounted for 72.62% of the total area, vegetation coverage of 35.30% of area showed continuous improvement; (3) vegetation coverage mutation years of Xi’an City occurred significantly in 2004, 2005, 2006, 2007, and 2008, respectively, the area of significant mutation years accounted for 17.58% of the total area; (4) the spatial variation range of relative coverage rate of vegetation coverage in Xi’an City ranged from -9.07 to 7.49, and the negative value of relative development rate accounted for 20.77% of the total area; the trend of the center of gravity of vegetation coverage in Xi’an City gradually shifted from southwest to northeast; (5) the average rainfall and regional vegetation coverage in Xi’an City showed the increasing trend, the correlation coefficient was 0.47 (p<0.09), and the spatial distribution center of gravity showed a trend of shifting from northeast to southwest, which was opposite to the change of vegetation. These research results will help further deepen the understanding of the vegetation restoration status and its influencing factors in Xi’an City, and provide a scientific basis for the ecological construction projects such as vegetation restoration in Xi’an City.

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