干旱区生态环境知识资源中心(Arid): Evaluating the dynamics of grassland net primary productivity in response to climate change in China

Arid

DOI	10.1016/j.gecco.2021.e01574
	Evaluating the dynamics of grassland net primary productivity in response to climate change in China
	Liu, Yangyang; Zhou, Ronglei; Ren, Hanyu; Zhang, Wei; Zhang, Zhixin; Zhang, Zhaoying; Wen, Zhongming
通讯作者	Wen, ZM (corresponding author), Northwest A&F Univ, Coll Grassland Agr, Xinong Rd 22, Yangling 712100, Shaanxi, Peoples R China. ; Zhang, ZY (corresponding author), Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Peoples R China.
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
ISSN	2351-9894
出版年	2021
卷号	28
英文摘要	Net primary productivity (NPP) has been considered as a direct indicator to access the ter-restrial primary production. However, considerable uncertainties remain toward the response mechanism of NPP to climate change across annual and seasonal scales, especially for grassland ecosystems. In this study, the spatiotemporal dynamics of grassland NPP and its prominent climate-controlling factor were evaluated based on the CASA model and groundbased meteorological data across annual and seasonal scales in China from 1982 to 2016. Results showed that the annual mean grassland NPP was 294.58 gC.m(-2).a(-1) over the 35 years; the largest annual mean NPP was observed in Alpine sub-alpine meadow (235.72 +/- 13.21 gC.m(-2).a(-1)), while the smallest annual mean NPP value occurred in Desert grassland (97.27 +/- 9.64 gC.m(-2)a(-1)). Moreover, the multiyear mean grassland NPP showed a decreasing trend from the southeast to the northwest spatially. Temporally, grassland NPP exhibited a significant increasing trend (slope = 2.4 gC.m(-2).a(-1); p < 0.0001) over the whole study period; an abrupt change point across the grassland NPP time series was observed in 1999. Specially, 66.34% of the grassland area showed an increasing trend in NPP, and the areas with a significant increasing trend were concentrated in Qinghai-Tibet Plateau and the northern area of Xinjiang. Further climate factor analysis with NPP indicated that NPP positively correlated with precipitation and negatively correlated with temperature for the whole grassland area. In particular, the temperature was a dominant driver in NPP variations for Alpine sub-alpine meadow, Slope grassland and Alpine sub-alpine grassland, while precipitation controlled the most in NPP variations for Plain grassland and Desert grassland. The accumulation of grassland NPP in spring and autumn benefits from the increase in temperature, and precipitation promoted the accumulated NPP in summer and winter. (C) 2021 The Authors. Published by Elsevier B.V.
英文关键词	Net primary productivity CASA model Mann-Kendall test Hurst index Climate change
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:000684552100001
WOS关键词	ANTHROPOGENIC ACTIVITIES ; QUANTITATIVE ASSESSMENT ; ECOLOGICAL RESTORATION ; LAND CONVERSION ; TIBETAN PLATEAU ; DRIVING FORCES ; CARBON USE ; DEGRADATION ; IMPACT ; VARIABILITY
WOS类目	Biodiversity Conservation ; Ecology
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
来源机构	西北农林科技大学 ; 南京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/363470
作者单位	[Liu, Yangyang; Zhou, Ronglei; Ren, Hanyu; Zhang, Wei; Zhang, Zhixin; Wen, Zhongming] Northwest A&F Univ, Coll Grassland Agr, Xinong Rd 22, Yangling 712100, Shaanxi, Peoples R China; [Liu, Yangyang; Zhang, Zhaoying] Nanjing Univ, Int Inst Earth Syst Sci, Jiangsu Prov Key Lab Geog Informat Sci & Technol, Nanjing 210023, Peoples R China
推荐引用方式 GB/T 7714	Liu, Yangyang,Zhou, Ronglei,Ren, Hanyu,et al. Evaluating the dynamics of grassland net primary productivity in response to climate change in China[J]. 西北农林科技大学, 南京大学,2021,28.
APA	Liu, Yangyang.,Zhou, Ronglei.,Ren, Hanyu.,Zhang, Wei.,Zhang, Zhixin.,...&Wen, Zhongming.(2021).Evaluating the dynamics of grassland net primary productivity in response to climate change in China.GLOBAL ECOLOGY AND CONSERVATION,28.
MLA	Liu, Yangyang,et al."Evaluating the dynamics of grassland net primary productivity in response to climate change in China".GLOBAL ECOLOGY AND CONSERVATION 28(2021).