Livestock-carrying capacity and overgrazing status of alpine grassland in the Three-River Headwaters region, China

doi:10.1007/s11442-014-1089-z

›› 2014, Vol. 24 ›› Issue (2): 303-312.doi: 10.1007/s11442-014-1089-z

• Research Articles • 上一篇下一篇

Livestock-carrying capacity and overgrazing status of alpine grassland in the Three-River Headwaters region, China

ZHANG Jiping^1,2, ZHANG Linbo^1,2, LIU Weiling^1,2, QI Yue^1,2, WO Xiao^1,2,3

1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. State Environmental Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Beijing 100012, China;
3. East China Institute of Technology, Faculty of Geomatics, Nanchang 330012, China

收稿日期:2013-01-20 修回日期:2013-07-10 出版日期:2014-04-15 发布日期:2014-03-24
通讯作者: Zhang Linbo, Professor, E-mail：zhanglb@craes.org.cn E-mail:zhanglb@craes.org.cn
作者简介:Zhang Jiping (1983-), Ph.D, specialized in regional ecology and LUCC. E-mail：jipyzhang407@163.com
基金资助:
The Chinese National Non-profit Program for Environment Protection, No.201109030

Livestock-carrying capacity and overgrazing status of alpine grassland in the Three-River Headwaters region, China

ZHANG Jiping^1,2, ZHANG Linbo^1,2, LIU Weiling^1,2, QI Yue^1,2, WO Xiao^1,2,3

1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. State Environmental Protection Key Laboratory of Regional Ecological Processes and Functions Assessment, Beijing 100012, China;
3. East China Institute of Technology, Faculty of Geomatics, Nanchang 330012, China

Received:2013-01-20 Revised:2013-07-10 Online:2014-04-15 Published:2014-03-24
Contact: Zhang Linbo, Professor, E-mail：zhanglb@craes.org.cn E-mail:zhanglb@craes.org.cn
About author:Zhang Jiping (1983-), Ph.D, specialized in regional ecology and LUCC. E-mail：jipyzhang407@163.com
Supported by:
The Chinese National Non-profit Program for Environment Protection, No.201109030

摘要/Abstract

摘要：

The Three-River Headwaters region in China is an ecological barrier providing environmental protection and regional sustainable development for the mid-stream and downstream areas,which also plays an important role in animal husbandry in China. This study estimated the grassland yield in the Three-River Headwaters region based on MODIS NPP data,and calculated the proper livestock-carrying capacity of the grassland. We analyzed the overgrazing number and its spatial distribution characteristics through data comparison between actual and proper livestock-carrying capacity. The results showed the following:(1) total grassland yield (hay) in the Three-River Headwaters region was 10.96 million tons in 2010 with an average grassland yield of 465.70 kg/hm² (the spatial distribution presents a decreasing trend from the east and southeast to the west and northwest in turn);(2) the proper livestock-carrying capacity in the Three-River Headwaters region is 12.19 million sheep units (hereafter described as "SU"),and the average stocking capacity is 51.27 SU [the proper carrying capacity is above 100 SU/km² in the eastern counties,60 SU/km² in the central counties (except Madoi County),and 30 SU/km² in the western counties];and (3) total overgrazing number was 6.52 million SU in the Three-River Headwaters region in 2010,with an average overgrazing ratio of 67.88% and an average overgrazing number of 27.43 SU/km². A higher overgrazing ratio occurred in Tongde,Xinghai,Yushu,Henan and Zêkog. There was no overgrazing in Zhiduo,Tanggula Township and Darlag,Qumerleb and Madoi. The remainder of the counties had varying degrees of overgrazing.

关键词: proper livestock-carrying capacity, actual livestock-carrying capacity, overgrazing number, Three-River Headwaters region

Abstract:

Key words: proper livestock-carrying capacity, actual livestock-carrying capacity, overgrazing number, Three-River Headwaters region

ZHANG Jiping, ZHANG Linbo, LIU Weiling, QI Yue, WO Xiao. Livestock-carrying capacity and overgrazing status of alpine grassland in the Three-River Headwaters region, China[J]. , 2014, 24(2): 303-312.

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Livestock-carrying capacity and overgrazing status of alpine grassland in the Three-River Headwaters region, China

Livestock-carrying capacity and overgrazing status of alpine grassland in the Three-River Headwaters region, China

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