首页|内蒙古草原退化状况及驱动因素对比分析--以锡林郭勒草原与呼伦贝尔草原为研究区域

内蒙古草原退化状况及驱动因素对比分析--以锡林郭勒草原与呼伦贝尔草原为研究区域

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利用1980年以来的遥感数据、气象数据和牲畜头数数据,采用图形代数和统计分析方法,对比研究了锡林郭勒和呼伦贝尔两大草原退化状况及其驱动因素。研究结果表明,锡林郭勒草原目前已经发生了整体性的全面退化,中重度退化草原面积超过40%,呼伦贝尔草原退化面积为54.36%,以轻度退化类型为主;草原退化主要受气候旱化和放牧活动的影响,草原植被覆盖度的降低与降雨量减少及干旱程度提高之间存在高度一致的对应关系;而锡林郭勒草原退化程度显著高于呼伦贝尔草原,这与其自上世纪80年代以来一直处于高强度放牧利用密切相关。
Comparative Analysis on Degradation and its Driving Factors in Xilin Gol Grassland and Hulun Buir Grassland
Combining remote sensing data, meteorological data and livestock statistical data since 1980 , the map algebra and statistical analysis were used to understand steppe degradation and its driving factors in the Xilin Gol Grassland and Hulun Buir Grassland. The research results show that, nearly whole area of Xilin Gol Grassland has degradated, and the moderate and se-vere degradation area is more than 40%. The degradation area in Hulun Buir grassland is 54 . 36%, mainly in the mild degradation. Grassland degradation is generally affected by drought and overgrazing. The vegetation coverage lost has positive related to reduced precipitation and drought. Because of heavy grazing since 1980s, the degree of degradation of Xilin Gol Grassland was severe than that in Hulun Buir Grassland significantly.

Xilin Gol GrasslandHulun Buir GrasslandGrassland degradationDroughtover-grazing

李政海、鲍雅静、张靖、王海梅、胡志超

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大连民族学院环境与资源学院,辽宁 大连116605

内蒙古自治区气象科学研究所,呼和浩特010051

内蒙古呼和浩特市气象局,呼和浩特010020

锡林郭勒草原 呼伦贝尔草原 草原退化 气候旱化 过度放牧

环境保护部公益性行业科研专项国家自然科学基金国家自然科学基金中央高校基本科研业务费专项资金资助中央高校基本科研业务费专项资金资助中央高校基本科研业务费专项资金资助中央高校基本科研业务费专项资金资助大连民族学院创新团队项目国家火炬计划项目

201109025-33097049431170402DC140468DC110105DC120101142DC1201011411180812012GH231899

2015

大连民族大学学报
大连民族学院

大连民族大学学报

CHSSCD
影响因子:0.266
ISSN:1009-315X
年,卷(期):2015.(1)
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