Arid Zone Research ›› 2021, Vol. 38 ›› Issue (3): 802-811.doi: 10.13866/j.azr.2021.03.22

• Plant and Plant Physiology • Previous Articles     Next Articles

Effects of climate and human activities on vegetation cover changes in Xilingol steppe

QU Yingbo(),ZHAO Yuanyuan,DING Guodong(),GAO Guanglei   

  1. Department of soil and water conservation of Beijing Forestry University, Key Laboratory of State Forestry Administration on Soil and Water Conservation, Beijing 100083, China
  • Received:2020-08-14 Revised:2020-11-07 Online:2021-05-15 Published:2021-06-17
  • Contact: Guodong DING E-mail:qyb_bjfu@163.com;dch1999@263.net

Abstract:

This study used linear and residual analysis of remote sensing and meteorological data to monitor changes in fractional vegetation cover (FVC) in different banners from 1982 to 2018. Additionally, the relationship between climate change, human activities, and FVC change was determined, and then, the temporal and spatial pattern of the contribution rate of the two factors was quantified. The change in FVC in Xilingol steppe had evident spatial heterogeneity. In terms of grassland type, the FVC of meadow steppe increased significantly, while that of desert steppe decreased significantly. The FVC in the west and north areas showed a decreasing trend, while that in the east and south showed an increasing trend, with the year 2000 being the significant change node. FVC was positively correlated with precipitation (P<0.01). The spatial pattern of the impact of human activities on the FVC was different before and after 2000, and human activities from 1982 to 2018 were the dominant explanatory factors.

Key words: vegetation coverage, climate, human activities, residual analysis, contribution rate, Xilingol steppe