干旱区生态环境知识资源中心(Arid): Quantifying the Influence of Climate Change and Anthropogenic Activities on the Net Primary Productivity of China's Grasslands

Arid

DOI	10.3390/rs14194844
	Quantifying the Influence of Climate Change and Anthropogenic Activities on the Net Primary Productivity of China's Grasslands
	Zhou, Xiafei; Peng, Binbin; Zhou, Ying; Yu, Fang; Wang, Xue-Chao
通讯作者	Yu, F
来源期刊	REMOTE SENSING
EISSN	2072-4292
出版年	2022
卷号	14 期号:19
英文摘要	As one of China's most common vegetation types, grasslands comprise about 27.5% of its terrestrial area and 41% of its carbon storage. Since climate change (CC) and human activities (HA) have a great effect on grasslands, quantifying the contributions of CC and HA on grassland net primary productivity (NPP) is crucial in understanding the mechanisms of grassland regional carbon balances. However, current approaches, including residual trend, biophysical model and environmental background-based methods, have limitations on different scales, especially on the national scale of China. To improve assessment accuracy, modifications to the environmental background-based method were introduced in calculating the CC and HA contributions to the actual NPP (ANPP). In this study, the grassland ANPP in national nature reserves was defined as the environmental background value (PNPP), which was only affected by CC and without HA. The pixel PNPP outside the nature reserves could be replaced by the pixel PNPP in the nature reserve with the most similar habitat in the same natural ecological geographical division. The impact of HA on grassland ANPP (HNPP) could be identified by calculating the difference between PNPP and ANPP. Finally, the contributions of CC and HA to ANPP changes were assessed by the trends of ANPP, PNPP, and HNPP. The results showed that the average grassland ANPP significantly increased from 2001 to 2020. CC contributed 71.0% to ANPP change, whereas HA contributed 29.0%. Precipitation was the main contributor to grassland growth among arid and semi-arid regions, while temperature inhibited productivity in these areas. HA was the major cause of degradation in China's grasslands, although the effects have declined over time. The research could provide support support for government decisions. It could also provide a new and feasible research method for quantitatively evaluating grasslands and other ecosystems.
英文关键词	grassland NPP climate change (CC) human activities (HA) contribution
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000867189600001
WOS关键词	QUANTITATIVE ASSESSMENT ; IMPACTS ; TERRESTRIAL ; PRECIPITATION ; DEGRADATION ; ECOSYSTEMS ; CONVERSION ; FRAMEWORK ; PATTERNS ; PLATEAU
WOS类目	Environmental Sciences ; Geosciences, Multidisciplinary ; Remote Sensing ; Imaging Science & Photographic Technology
WOS研究方向	Environmental Sciences & Ecology ; Geology ; Remote Sensing ; Imaging Science & Photographic Technology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/394205
推荐引用方式 GB/T 7714	Zhou, Xiafei,Peng, Binbin,Zhou, Ying,et al. Quantifying the Influence of Climate Change and Anthropogenic Activities on the Net Primary Productivity of China's Grasslands[J],2022,14(19).
APA	Zhou, Xiafei,Peng, Binbin,Zhou, Ying,Yu, Fang,&Wang, Xue-Chao.(2022).Quantifying the Influence of Climate Change and Anthropogenic Activities on the Net Primary Productivity of China's Grasslands.REMOTE SENSING,14(19).
MLA	Zhou, Xiafei,et al."Quantifying the Influence of Climate Change and Anthropogenic Activities on the Net Primary Productivity of China's Grasslands".REMOTE SENSING 14.19(2022).