Chin J Plant Ecol ›› 2021, Vol. 45 ›› Issue (6): 617-625.DOI: 10.17521/cjpe.2020.0253

• Research Articles • Previous Articles     Next Articles

Evolution characteristics and its driving forces analysis of vegetation ecological quality in Qinling Mountains region from 2000 to 2019

JI Yu-He1,2, ZHOU Guang-Sheng1,2,*(), WANG Shu-Dong3, WANG Li-Xia4, ZHOU Meng-Zi1   

  1. 1State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Science, Beijing 100081, China
    2Joint Laboratory of Eco-meteorology, School of Earth Science and Technology, Zhengzhou University, Zhengzhou 450001, China
    3Aerospace Information Institute, Chinese Academy of Sciences, Beijing 100101, China
    4Ministry of Ecology and Environment Center for Satellite Application on Ecology and Environment, Beijing 100094, China
  • Received:2020-07-28 Accepted:2021-03-15 Online:2021-06-20 Published:2021-09-09
  • Contact: ZHOU Guang-Sheng
  • Supported by:
    National Natural Science Foundation of China(41705093);National Natural Science Foundation of China(41571175);National Natural Science Foundation of China(31661143028);National Key R&D Program of China(2018YFA0606103)


Aims This study was conducted to illustrate the spatial heterogeneity of vegetation ecological quality change, and to clarify the driving forces of ecological quality change in Qinling Mountains region from 2000 to 2019.

Methods The methods of model simulation and satellite observation were used.

Important findings The results showed that (1) Vegetation ecological quality in Qinling Mountains region was significantly improved, and the average increase rates of net primary productivity (NPP) and vegetation fractional coverage (VFC) were 8 g C·m-2·a-1 and 0.005 4·a-1, respectively. Spatially, 85%-95% of the Qinling Mountains region showed a significant improvement in ecosystem quality, but NPP and VFC decreased significantly in some areas such as Xiʼan City. (2) 80%-85% of the Qinling Mountains region showed an increasing trend in precipitation and temperature, which was consistent with the distribution area increasing NPP and VFC. These evidence confirmed that warm and humid climate played an important role in improving vegetation ecological quality. (3) Human protection activities (Natural Forest Protection, Grain for Green Project, etc.) have increased the area of woodland, grassland and water area significantly, and a large range of vegetation ecosystems have been nurtured in the Qinling Mountains region. The expansion of construction land represented by the northern slope of Qinling Mountains was the main reason for the deterioration of vegetation ecological quality. However, human destructive activities were limited to local areas.

Key words: Qinling Mountains, ecological quality, climate change, normalized difference vegetation index, vegetation fractional coverage, net primary productivity