| 三江源草地载畜压力时空动态分析 |
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| 引用本文： | 樊江文,邵全琴,王军邦,陈卓奇,钟华平.三江源草地载畜压力时空动态分析[J].中国草地学报,2011,33(3). |
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| 作者姓名： | 樊江文 邵全琴 王军邦 陈卓奇 钟华平 |
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| 作者单位： | 中国科学院地理科学与资源研究所区域可持续发展分析与模拟重点实验室,北京,100101 |
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| 基金项目： | 国家科技支撑项目，国家"973"项目 |
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| 摘 要： | 对三江源地区1988～2005年草地载畜压力变化的时空动态进行了分析,结果表明,18年来该地区草地平均超载1.5倍,其中冬春草场超载2倍以上.另一方面,草地载畜压力具有逐年下降的趋势,特别以冬春场的下降趋势更为明显,表明三江源地区草地利用逐年向合理的方向发展.研究认为,该地区近几十年来的连续过度放牧是造成草地退化的最主要因素之一,因此建议该地区草地恢复和治理工作的重点应该继续放在减畜减压上,在维持三江源草地畜牧业适度规模的同时,根据该区在国家主体功能区中的功能定位,促进其他重要生态功能的发挥.
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| 关 键 词： | 三江源 草地载畜压力 时空动态 草地退化 |
An Analysis of Temporal-spatial Dynamics of Grazing Pressure on Grassland in Three Rivers Headwater Region |
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| FAN Jiang-wen,SHAO Quan-qin,WANG Jun-bang,CHEN Zhou-qi,ZHONG Hua-ping.An Analysis of Temporal-spatial Dynamics of Grazing Pressure on Grassland in Three Rivers Headwater Region[J].Chinese Journal of Grassland,2011,33(3). |
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| Authors: | FAN Jiang-wen SHAO Quan-qin WANG Jun-bang CHEN Zhou-qi ZHONG Hua-ping |
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| Institution: | FAN Jiang-wen,SHAO Quan-qin,WANG Jun-bang,CHEN Zhou-qi,ZHONG Hua-ping(Key Laboratory of Analysis and Simulation of Regional Sustainable Development,Institute of Geographical Sciences and Natural Resources,Chinese Academy of Sciences,Beijing 100101,China) |
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| Abstract: | Temporal-spatial dynamics of grazing pressure on grassland in Three Rivers headwater region in 1988-2005 were analyzed.The results showed that grassland was overgrazed averagely by 1.5 times,and even 2 times in winter-spring pasture in last 18 years.Meanwhile grazing pressure was steadily relieved,especially in winter-autumn pasture,which showed that grassland in Three Rivers headwater region has been utilized reasonably year by year.It is considered that overgrazing is one of the main factors resulting in ... |
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| Keywords: | Three Rivers headwater region Grazing pressure Temporal-spatial dynamics Grassland degradation |
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