Spatial and temporal variability of grassland yield and its response to climate change and anthropogenic activities on the Tibetan Plateau from 1988 to 2013

doi:10.1016/j.ecolind.2018.05.088

	Spatial and temporal variability of grassland yield and its response to climate change and anthropogenic activities on the Tibetan Plateau from 1988 to 2013
	Zhang, Haiyan 1,2; Fan, Jiangwen 1; Wang, Junbang 1,3; Cao, Wei 1; Harris, Warwick 4
刊名	ECOLOGICAL INDICATORS
	2018-12-01
卷号	95 页码:141-151
关键词	Tibetan Plateau Grassland yield changes Climate change Grazing activities Protection and restoration projects
ISSN号	1470-160X
DOI	10.1016/j.ecolind.2018.05.088
通讯作者	Fan, Jiangwen(fanjw@igsnrr.ac.cn)
英文摘要	Accurate and periodic assessment of grassland yield (GY) is of great importance for the management of high altitude plateau grasslands. The Tibetan Plateau (TP) is a very important pastoral area that provides a microcosm of typical alpine grassland ecosystems. Based on remote sensing data, meteorological datasets and observational plant biomass data, we used the Global Production Efficiency Model and Soil and Atmosphere Model (GLOPEMCEVSA) to estimate GY and its response to climate change and anthropogenic activities on the TP from 1988 to 2013. We quantitatively analyzed spatiotemporal dynamic changes of GY for four geomorphological divisions and five main grassland types. For the 26 years of the study, average annual total GY was 515.8 kg/ha/yr and gradually decreased from the southeast to the northwest of the TP. Annual GY fluctuated from year to year but had an overall positive trend (4.2 kg/ha/yr). Spatiotemporal variation of GY was greatly influenced by spatial heterogeneity. For the total area, the proportion showing a significant increase in GY was 45.2%, while only 12.6% showed a significant decrease. For the main grassland types, GY of Alpine Meadow was highest and had the highest slope of increase. The pattern of decrease of GY from the southeast to the northwest was predominantly related to climate gradients. Regional correlation analysis indicated that warming temperature promoted positive increase of GY for almost all the region. Annual precipitation was related to a less significant decreasing trend of GY over all the TP apart from an increase of GY in the middle area of the north. The grazing pressure index decreased over the years by control of livestock numbers, the reduction of grazing pressure assisting restoration of alpine grasslands. However, grazing pressure on the TP in 2013 remained too high and overloaded. Nevertheless, grassland protection and restoration projects have mitigated grassland degradation in some areas, promoted grassland restoration, and increased incomes of herdsmen. The study indicates that continuation of these projects is critical for the restoration and sustainable use of the TP grasslands.
资助项目	National Key R&D Program of China[2017YFA0604804] ; Science and Technology Service Network Initiative[KFJ_STS-ZDTP-013-02] ; Chinese Academy of Sciences project[XDA20090000]
WOS关键词	NET PRIMARY PRODUCTIVITY ; INNER-MONGOLIA ; VEGETATION PATTERNS ; GRAZING INTENSITY ; ALPINE GRASSLAND ; SOLAR-RADIATION ; RESTORATION ; IMPACTS ; ECOSYSTEM ; REGION
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000456907400015
资助机构	National Key R&D Program of China ; Science and Technology Service Network Initiative ; Chinese Academy of Sciences project
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/49929]
专题	中国科学院地理科学与资源研究所
通讯作者	Fan, Jiangwen
作者单位	1.Chinese Acad Sci, Key Lab Land Surface Pattern & Simulat, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Landcare Res, POB 69040, Lincoln 7640, New Zealand
推荐引用方式 GB/T 7714	Zhang, Haiyan,Fan, Jiangwen,Wang, Junbang,et al. Spatial and temporal variability of grassland yield and its response to climate change and anthropogenic activities on the Tibetan Plateau from 1988 to 2013[J]. ECOLOGICAL INDICATORS,2018,95:141-151.
APA	Zhang, Haiyan,Fan, Jiangwen,Wang, Junbang,Cao, Wei,&Harris, Warwick.(2018).Spatial and temporal variability of grassland yield and its response to climate change and anthropogenic activities on the Tibetan Plateau from 1988 to 2013.ECOLOGICAL INDICATORS,95,141-151.
MLA	Zhang, Haiyan,et al."Spatial and temporal variability of grassland yield and its response to climate change and anthropogenic activities on the Tibetan Plateau from 1988 to 2013".ECOLOGICAL INDICATORS 95(2018):141-151.