Determining the contributions of climate change and human activities to the vegetation NPP dynamics in the Qinghai-Tibet
- PDF / 2,021,780 Bytes
- 18 Pages / 547.087 x 737.008 pts Page_size
- 24 Downloads / 204 Views
Determining the contributions of climate change and human activities to the vegetation NPP dynamics in the Qinghai-Tibet Plateau, China, from 2000 to 2015 Bing Guo & Baomin Han & Fei Yang & Shuting Chen & Yue Liu & Wenna Yang
Received: 21 June 2019 / Accepted: 14 September 2020 # Springer Nature Switzerland AG 2020
Abstract Reflecting on the change in the global biodiversity pattern, the Tibetan Plateau, considered to be a “natural laboratory” for analyzing environmental change in China and around the world, has suffered profound changes in the vegetation ecosystem. This study introduces the gravity center model and geographical detectors to examine and discuss the spatial-temporal change pattern B. Guo : B. Han (*) : S. Chen : Y. Liu : W. Yang School of Civil Architectural Engineering, Shandong University of Technology, Zibo 255000 Shandong, China e-mail: [email protected] B. Guo Key Laboratory for Digital Land and Resources of Jiangxi Province, East China University of Technology, Nanchang 330013, China B. Guo Key Laboratory of Digital Earth Science, Institute of Remote Sensing and Digital Earth, Chinese Academy of Sciences, Beijing 100101, China B. Guo Key Laboratory of Geomatics and Digital Technology of Shandong Province, Qingdao 266590, China B. Guo (*) Geomatics Technology and Application key Laboratory of Qinghai Province, Xining 810001, China e-mail: [email protected] F. Yang (*) State Key Laboratory of Resources and Environmental Information System, Institute of Geographic Sciences and Natural Resources Research of Chinese Academy of Sciences, Beijing 100101, China e-mail: [email protected]
and the driving mechanism behind vegetation net primary production (NPP) in the Qinghai-Tibet Plateau from the year 2000 to 2015 while also quantitatively classifying the relative roles incorporated in the NPP change process. The study found that (1) from 2000 to 2015, the annual average NPP of the Tibetan Plateau demonstrated a declining trend from southeast to northwest. (2) The gravity center of vegetation NPP on the Qinghai-Tibet Plateau seems to have shifted eastward in the past 16 years, indicating that the level of vegetation NPP in the east depicts a greater increment and growth rate than the west. (3) In the arid regions, temperature and rainfall appear as the dominant factors for vegetation NPP, while slope and aspect parameters have constantly assumed dominancy for the same in the tropical rainforest-monsoon ecological zone in southeastern Tibet. (4) The structure of vegetation NPP exhibits an interaction between human and natural factors, which enhances the influence of single factors. (5) Considering the global ecological change and related human activities, certain differences are observed in the dominant and interaction factors for different study periods and ecological subregions in the Qinghai-Tibet Plateau. The research results could prove conclusive for vegetation ecological protection in the Qinghai-Tibet plateau. Keywords Driving mechanism . Geographicaldetector . Gravity center model .
Data Loading...
