气候变化领域集成服务门户(CCPortal): Spatiotemporal patterns and driving factors of gross primary productivity over the Mongolian Plateau steppe in the past 20 years

CCPortal

DOI	10.1016/j.scitotenv.2024.170886
	Spatiotemporal patterns and driving factors of gross primary productivity over the Mongolian Plateau steppe in the past 20 years
	Ding, Lei; Li, Zhenwang; Wang, Xu; Shen, Beibei; Xiao, Liujun; Dong, Gang; Yu, Lu; Nandintsetseg, Banzragch; Shi, Zhou; Chang, Jinfeng; Shao, Changliang
发表日期	2024
ISSN	0048-9697
EISSN	1879-1026
起始页码	920
卷号	920
英文摘要	The Eurasian steppe is the largest temperate grassland in the world. The grassland of the Mongolian Plateau (MP) represents an important part of the Eurasian steppe with high climatic sensitivity. Gross primary productivity (GPP) is a key indicator of the grassland's production, status and dynamic on the MP. In this study, we calibrated and evaluated the grassland -specific light use efficiency model (GRASS-LUE) against the observed GPP collected from nine eddy covariance flux sites on the MP, and compared the performance with other four GPP products (MOD17, VPM, GLASS and GOSIF). GRASS-LUE with higher R2 (0.91) and lower root mean square error (RMSE = 0.99 gC m- 2 day - 1) showed a better performance compared to the four GPP products in terms of model accuracy and dynamic consistency, especially in typical and desert steppe. The parameters of the GRASS-LUE are more suitable for water -limited grassland could be the reason for its outstanding performance in typical and desert steppe. Mean grassland GPP derived from GRASS-LUE was higher in the east and lower in the west of the MP. Grassland GPP was on average 205 gC m- 2 over the MP between 2001 and 2020 with mean annual total GPP of 322 TgC yr - 1. 30 % of the MP steppe showed a significant GPP increase. Growing season precipitation is the main factor affecting GPP of the MP steppe across regions. Anthropogenic factors (livestock density and population density) had greater effect on GPP than growing season temperature in pastoral counties in IM that take grazing as one of main industries. These findings can inform the status and trend of the productivity of MP steppe
英文关键词	Gross primary productivity; Mongolian Plateau; Grassland; Climatic factors; Human activity
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
WOS记录号	WOS:001188030400001
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/302732
作者单位	Zhejiang University; Yangzhou University; Yangzhou University; Chinese Academy of Agricultural Sciences; Institute of Agricultural Resources & Regional Planning, CAAS; Ministry of Agriculture & Rural Affairs; Nanjing Agricultural University; Shanxi University; Zhejiang University; Istanbul Technical University
推荐引用方式 GB/T 7714	Ding, Lei,Li, Zhenwang,Wang, Xu,et al. Spatiotemporal patterns and driving factors of gross primary productivity over the Mongolian Plateau steppe in the past 20 years[J],2024,920.
APA	Ding, Lei.,Li, Zhenwang.,Wang, Xu.,Shen, Beibei.,Xiao, Liujun.,...&Shao, Changliang.(2024).Spatiotemporal patterns and driving factors of gross primary productivity over the Mongolian Plateau steppe in the past 20 years.SCIENCE OF THE TOTAL ENVIRONMENT,920.
MLA	Ding, Lei,et al."Spatiotemporal patterns and driving factors of gross primary productivity over the Mongolian Plateau steppe in the past 20 years".SCIENCE OF THE TOTAL ENVIRONMENT 920(2024).