干旱区生态环境知识资源中心(Arid): Net Primary Productivity Loss under different drought levels in different grassland ecosystems

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DOI	10.1016/j.jenvman.2020.111144
	Net Primary Productivity Loss under different drought levels in different grassland ecosystems
	Lei, Tianjie; Feng, Jie; Lv, Juan; Wang, Jiabao; Song, Hongquan; Song, Wenlong; Gao, Xiaofeng
通讯作者	Wang, JB
来源期刊	JOURNAL OF ENVIRONMENTAL MANAGEMENT
ISSN	0301-4797
EISSN	1095-8630
出版年	2020
卷号	274
英文摘要	Drought is one of the most prominent natural threats to grassland productivity, although the magnitude of this threat is uncertain due to the different drought-levels. However, drought-productivity dynamics has not yet received much attention. It is necessary to establish the method to evaluate quantitatively the effect of different drought-levels on grassland productivity. To better understand the impact of different drought-levels on productivity dynamics, an assessment method to assess the quantitative effects of different drought-levels on grassland productivity was proposed based-on long-term observation data, standardized precipitation index (SPI) and Biome-BGC process model. Based-on assessment indicator of net primary productivity (NPP), NPP loss caused by moderate, severe and extreme drought was dramatically different in grasslands with a significant exponential change with gradient of different drought-levels. Furthermore, NPP loss variation in different grassland types under the same drought level was significantly different. Besides, the effect of drought on NPP gradually decreased by an exponential relationship in desert, typical and meadow steppe. However, the percentage of NPP loss in desert, typical and meadow steppe reduced by 20.5%, 13.1% and 17.5% with U-shaped, respectively. Meanwhile, our results can offer scientific basis to improve assessment impact of extreme climate events used by ecosystem model and data, and cope with carbon cycling management and climate change.
英文关键词	Drought SPI Biome-BGC Grassland productivity NPP loss
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:000582470000012
WOS关键词	PLANT-SPECIES DIVERSITY ; CARBON SEQUESTRATION ; TEMPERATE GRASSLANDS ; SEMIARID GRASSLAND ; INNER-MONGOLIA ; USE EFFICIENCY ; CLIMATE ; PRECIPITATION ; IMPACTS ; CHINA
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/327131
作者单位	[Lei, Tianjie; Feng, Jie; Lv, Juan; Wang, Jiabao; Song, Wenlong] State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China; [Lei, Tianjie; Feng, Jie; Lv, Juan; Wang, Jiabao; Song, Wenlong] China Inst Water Resources & Hydropower Res IWHR, Beijing 100038, Peoples R China; [Song, Hongquan] Henan Univ, Key Lab Geospatial Technol Middle & Lower Yellow, Minist Educ, Kaifeng 475004, Henan, Peoples R China; [Gao, Xiaofeng] Qingdao Univ Technol, Sch Civil Engn, Qingdao 266033, Peoples R China
推荐引用方式 GB/T 7714	Lei, Tianjie,Feng, Jie,Lv, Juan,et al. Net Primary Productivity Loss under different drought levels in different grassland ecosystems[J],2020,274.
APA	Lei, Tianjie.,Feng, Jie.,Lv, Juan.,Wang, Jiabao.,Song, Hongquan.,...&Gao, Xiaofeng.(2020).Net Primary Productivity Loss under different drought levels in different grassland ecosystems.JOURNAL OF ENVIRONMENTAL MANAGEMENT,274.
MLA	Lei, Tianjie,et al."Net Primary Productivity Loss under different drought levels in different grassland ecosystems".JOURNAL OF ENVIRONMENTAL MANAGEMENT 274(2020).