Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s40333-018-0093-z |
Effects of grazing on net primary productivity, evapotranspiration and water use efficiency in the grasslands of Xinjiang, China | |
Huang Xiaotao1,2; Luo Geping1![]() | |
Corresponding Author | Luo Geping |
Journal | JOURNAL OF ARID LAND
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ISSN | 1674-6767 |
EISSN | 2194-7783 |
Year Published | 2018 |
Volume | 10Issue:4Pages:588-600 |
Abstract in English | Grazing is a main human activity in the grasslands of Xinjiang, China. It is vital to identify the effects of grazing on the sustainable utilization of local grasslands. However, the effects of grazing on net primary productivity (NPP), evapotranspiration (ET) and water use efficiency (WUE) in this region remain unclear. Using the spatial Biome-BGC grazing model, we explored the effects of grazing on NPP, ET and WUE across the different regions and grassland types in Xinjiang during 1979-2012. NPP, ET and WUE under the grazed scenario were generally lower than those under the ungrazed scenario, and the differences showed increasing trends over time. The decreases in NPP, ET and WUE varied significantly among the regions and grassland types. NPP decreased as follows: among the regions, Northern Xinjiang (16.60 g C/(m(2)aEuro cent a)), Tianshan Mountains (15.94 g C/(m(2)aEuro cent a)) and Southern Xinjiang (-3.54 g C/(m(2)aEuro cent a)); and among the grassland types, typical grasslands (25.70 g C/(m(2)aEuro cent a)), swamp meadows (25.26 g C/(m(2)aEuro cent a)), mid-mountain meadows (23.39 g C/(m(2)aEuro cent a)), alpine meadows (6.33 g C/(m(2)aEuro cent a)), desert grasslands (5.82 g C/(m(2)aEuro cent a)) and saline meadows (2.90 g C/(m(2)aEuro cent a)). ET decreased as follows: among the regions, Tianshan Mountains (28.95 mm/a), Northern Xinjiang (8.11 mm/a) and Southern Xinjiang (7.57 mm/a); and among the grassland types, mid-mountain meadows (29.30 mm/a), swamp meadows (25.07 mm/a), typical grasslands (24.56 mm/a), alpine meadows (20.69 mm/a), desert grasslands (11.06 mm/a) and saline meadows (3.44 mm/a). WUE decreased as follows: among the regions, Northern Xinjiang (0.053 g C/kg H2O), Tianshan Mountains (0.034 g C/kg H2O) and Southern Xinjiang (0.012 g C/kg H2O); and among the grassland types, typical grasslands (0.0609 g C/kg H2O), swamp meadows (0.0548 g C/kg H2O), mid-mountain meadows (0.0501 g C/kg H2O), desert grasslands (0.0172 g C/kg H2O), alpine meadows (0.0121 g C/kg H2O) and saline meadows (0.0067 g C/kg H2O). In general, the decreases in NPP and WUE were more significant in the regions with relatively high levels of vegetation growth because of the high grazing intensity in these regions. The decreases in ET were significant in mountainous areas due to the terrain and high grazing intensity. |
Keyword in English | grazing effect grassland type net primary productivity evapotranspiration water use efficiency Biome BGC grazing model |
Subtype | Article |
Language | 英语 |
Country | Peoples R China |
Indexed By | SCI-E |
WOS ID | WOS:000437782700008 |
WOS Keyword | QINGHAI-TIBETAN PLATEAU ; BIOME-BGC MODEL ; NORTHERN TIANSHAN MOUNTAINS ; INNER-MONGOLIA ; NORTHWEST CHINA ; CLIMATE-CHANGE ; ABOVEGROUND BIOMASS ; COMMUNITY STRUCTURE ; TEMPERATE STEPPE ; ALPINE REGION |
WOS Subject | Environmental Sciences |
WOS Research Area | Environmental Sciences & Ecology |
Source Institution | 中国科学院新疆生态与地理研究所 ; 新疆大学 |
Document Type | 期刊论文 |
Identifier | http://119.78.100.177/qdio/handle/2XILL650/210625 |
Affiliation | 1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China; 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 3.Xinjiang Univ, Coll Resource & Environm Sci, Urumqi 830046, Peoples R China; 4.Nanjing Univ Informat Sci & Technol, Nanjing 210044, Jiangsu, Peoples R China |
Recommended Citation GB/T 7714 | Huang Xiaotao,Luo Geping,Ye Feipeng,et al. Effects of grazing on net primary productivity, evapotranspiration and water use efficiency in the grasslands of Xinjiang, China[J]. 中国科学院新疆生态与地理研究所, 新疆大学,2018,10(4):588-600. |
APA | Huang Xiaotao,Luo Geping,Ye Feipeng,&Han Qifei.(2018).Effects of grazing on net primary productivity, evapotranspiration and water use efficiency in the grasslands of Xinjiang, China.JOURNAL OF ARID LAND,10(4),588-600. |
MLA | Huang Xiaotao,et al."Effects of grazing on net primary productivity, evapotranspiration and water use efficiency in the grasslands of Xinjiang, China".JOURNAL OF ARID LAND 10.4(2018):588-600. |
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