Arid
DOI10.3390/w8080339
Estimated Grass Grazing Removal Rate in a Semiarid Eurasian Steppe Watershed as Influenced by Climate
Wang, Xixi1; Pedram, Shohreh1; Liu, Tingxi2; Gao, Ruizhong2; Li, Fengling2; Luo, Yanyun2
通讯作者Wang, Xixi
来源期刊WATER
ISSN2073-4441
出版年2016
卷号8期号:8
英文摘要

Grazing removal rate of grasses needs to be determined for various climate conditions to address eco-environmental concerns (e.g., desertification) related to steppe grassland degradation. The conventional approach, which requires survey data on animal species and heads as well as grass consumption per individual animal, is too costly and time-consuming to be applied at a watershed scale. The objective of this study was to present a new approach that can be used to estimate grazing removal rate with no requirement of animal-related data. The application of this new approach was demonstrated in a Eurasian semiarid typical-steppe watershed for an analysis period of 2000 to 2010. The results indicate that the removal rate tended to become larger, but its temporal variation tended to become smaller, from the upstream to downstream. Averaged across the watershed, the removal rate ranged from 63.9 to 401.0 g DM m(-2) (or 22.4 to 60.9%) during the analysis period. As expected, the removal rate in an atmospherically wetter year was higher than that in an atmospherically drier year. Nevertheless, none of the eleven analysis years had a removal rate higher than the threshold value of 65%, above which the risk of grassland degradation would become much greater.


英文关键词degradation erosion evapotranspiration MODIS natural NPP NPP model
类型Article
语种英语
国家USA ; Peoples R China
收录类别SCI-E
WOS记录号WOS:000387675500004
WOS关键词ESTIMATING POTENTIAL EVAPOTRANSPIRATION ; NET PRIMARY PRODUCTION ; LEYMUS-CHINENSIS ; INNER-MONGOLIA ; SOIL ; RESPONSES ; PRECIPITATION ; ECOSYSTEMS ; CHINA
WOS类目Water Resources
WOS研究方向Water Resources
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/196770
作者单位1.Old Dominion Univ, Dept Civil & Environm Engn, Norfolk, VA 23529 USA;
2.Inner Mongolia Agr Univ, Coll Water Conservancy & Civil Engn, Hohhot 010018, Peoples R China
推荐引用方式
GB/T 7714
Wang, Xixi,Pedram, Shohreh,Liu, Tingxi,et al. Estimated Grass Grazing Removal Rate in a Semiarid Eurasian Steppe Watershed as Influenced by Climate[J],2016,8(8).
APA Wang, Xixi,Pedram, Shohreh,Liu, Tingxi,Gao, Ruizhong,Li, Fengling,&Luo, Yanyun.(2016).Estimated Grass Grazing Removal Rate in a Semiarid Eurasian Steppe Watershed as Influenced by Climate.WATER,8(8).
MLA Wang, Xixi,et al."Estimated Grass Grazing Removal Rate in a Semiarid Eurasian Steppe Watershed as Influenced by Climate".WATER 8.8(2016).
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