IMHE OpenIR  > 山地灾害与地表过程重点实验室
Effect of Large Wild Herbivore Populations on the Forage-Livestock Balance in the Source Region of the Yellow River
Fan Yang1,2; Quanqin Shao1; Xingjian Guo1,2; Yuzhi Tang1,2; Yuzhe Li1; Dongliang Wang1; Yangchun Wang3; Jiangwen Fan1
Corresponding AuthorQuanqin Shao
2018
Source PublicationSustainability
ISSN2071-1050
Volume10Issue:2Pages:340
Abstract

Unmanned aerial vehicle surveys were conducted in the summer season of 2016 and the winter season of 2017 to investigate the large wild herbivore population, including kiangs, Tibetan gazelles and bharals, in Madoi County; the source region of the Yellow River. The study generated forage grass production data in 30 m spatial resolution in Madoi County in 2016 using a downscaling algorithm; estimated a forage-livestock balance including wild animals and domestic animals; and analyzed the effect of the large wild herbivore population on the balance between forage grass and herbivory in Madoi County. The large wild herbivore population was estimated based on the density of the animals in the survey sample strip and compared and verified with available statistical data and the two survey results from the summer season of 2016 and winter season of 2017. The results showed that: (1) in the winter season of 2017, the populations of kiang, Tibetan gazelle and bharal were 17,100, 16,000 and 9300, respectively, while the populations of domestic yak, Tibetan sheep and horse were 70,800, 102,200 and 1200, respectively. The total population of large wild herbivores and domestic animals was 475,000 (sheep units). The ratio (in sheep units) between large wild herbivores and domestic animals was 1:4.5; (2) When only considering domestic animals, the grazing pressure index was 1.13, indicating slight overloading of the grassland. When considering domestic animals and large wild herbivores (kiang, Tibetan gazelle and bharal), the grazing pressure index was 1.38, suggesting moderate overloading of the grassland; (3) If large wild herbivores are not taken into consideration when the forage-livestock balance is calculated, the grazing pressure will be under-estimated by 22%. Overgrazing is the major cause of grassland degradation in Madoi County. An additional 79,000 tons of hay or a 30% reduction in domestic animals is required to maintain a forage-livestock balance in Madoi County.

KeywordUav Remote Sensing Large Wild Herbivores Population Forage-livestock Balance Source Region Of The Yellow River
DOI10.3390/su10020340
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Indexed BySCI ; SSCI
Language英语
WOS IDWOS:000425943100063
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Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/20910
Collection山地灾害与地表过程重点实验室
Affiliation1.Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
2.University of Chinese Academy of Sciences, Beijing 100049, China
3.Institute of Mountain Hazards and Environment, Chinese Academy of Sciences, Chengdu 610041, China
Recommended Citation
GB/T 7714
Fan Yang,Quanqin Shao,Xingjian Guo,et al. Effect of Large Wild Herbivore Populations on the Forage-Livestock Balance in the Source Region of the Yellow River[J]. Sustainability,2018,10(2):340.
APA Fan Yang.,Quanqin Shao.,Xingjian Guo.,Yuzhi Tang.,Yuzhe Li.,...&Jiangwen Fan.(2018).Effect of Large Wild Herbivore Populations on the Forage-Livestock Balance in the Source Region of the Yellow River.Sustainability,10(2),340.
MLA Fan Yang,et al."Effect of Large Wild Herbivore Populations on the Forage-Livestock Balance in the Source Region of the Yellow River".Sustainability 10.2(2018):340.
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