气候变化领域集成服务门户(CCPortal): An integrated method to quantify human appropriation of net primary production in grasslands of the Qinghai-Tibet Plateau

CCPortal

DOI	10.1016/j.apgeog.2023.103055
	An integrated method to quantify human appropriation of net primary production in grasslands of the Qinghai-Tibet Plateau
	Dai, Xuhuan; Yang, Yanzheng; Zheng, Hua; Meng, Nan; Zhu, Jingyi; Li, Ruonan; Ma, Jinfeng; Lu, Zijian; Li, Zuzheng
发表日期	2023
ISSN	0143-6228
EISSN	1873-7730
卷号	158
英文摘要	Human appropriation of net primary production (HANPP) is an important indicator for measuring anthropogenic influences on ecosystems. However, it is a challenge to accurately delineate the spatial heterogeneity of the HANPP, mainly due to great uncertainties in the simulation of potential net primary production (NPPp). Here, we established a novel method for simulating grassland NPPp by integrating ecoregion delineation and a random forest (RF) model and derived HANPP calculated by the NPPp minus NPP remaining in the ecosystem after harvest (NPPeco). In a case study of the Qinghai-Tibet Plateau (QTP), we evaluated the proposed method via validation and comparison with the NPPp and HANPP results in 2010 based on the Thornthwaite Memorial (TM) model and LPJ-GUESS model. The results indicated that the grassland NPPp values simulated by our method were closer to the observed field data in the two ecoregions, while the TM model generally overestimated NPPp. Moreover, the spatial distribution of the grassland HANPP based on the proposed method showed a high cor-relation coefficient (0.704) with grazing intensity, which was 0.669 higher than that of the TM model and 0.21 higher than that of the LPJ-GUESS model. The proposed method can provide a valuable basis for grassland sustainability assessment and disaggregating livestock data from administrative units into grid cells.
关键词	Net primary production Grasslands Random forest Ecoregions Spatial heterogeneity
英文关键词	CLIMATE-CHANGE; QUANTITATIVE ASSESSMENT; VEGETATION; PATTERNS; NPP
WOS研究方向	Geography
WOS记录号	WOS:001046834600001
来源期刊	APPLIED GEOGRAPHY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283201
作者单位	Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES); Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS; Chinese Academy of Sciences; Institute of Tibetan Plateau Research, CAS; Yunnan University; Chinese Academy of Sciences; Research Center for Eco-Environmental Sciences (RCEES)
推荐引用方式 GB/T 7714	Dai, Xuhuan,Yang, Yanzheng,Zheng, Hua,et al. An integrated method to quantify human appropriation of net primary production in grasslands of the Qinghai-Tibet Plateau[J]. 中国科学院青藏高原研究所,2023,158.
APA	Dai, Xuhuan.,Yang, Yanzheng.,Zheng, Hua.,Meng, Nan.,Zhu, Jingyi.,...&Li, Zuzheng.(2023).An integrated method to quantify human appropriation of net primary production in grasslands of the Qinghai-Tibet Plateau.APPLIED GEOGRAPHY,158.
MLA	Dai, Xuhuan,et al."An integrated method to quantify human appropriation of net primary production in grasslands of the Qinghai-Tibet Plateau".APPLIED GEOGRAPHY 158(2023).