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气候变化和人类活动对锡林郭勒草原植被覆盖度的影响 被引量:17
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作者 屈莹波 赵媛媛 +1 位作者 丁国栋 高广磊 《干旱区研究》 CSCD 北大核心 2021年第3期802-811,共10页
基于遥感、气象及统计数据,采用线性趋势法和残差分析法,在不同时空尺度上监测1982-2018年锡林郭勒草原草地植被覆盖度动态,量化气候变化和人类活动对植被变化的贡献率。结果表明:1982-2018年,锡林郭勒草原植被覆盖度及变化具有明显的... 基于遥感、气象及统计数据,采用线性趋势法和残差分析法,在不同时空尺度上监测1982-2018年锡林郭勒草原草地植被覆盖度动态,量化气候变化和人类活动对植被变化的贡献率。结果表明:1982-2018年,锡林郭勒草原植被覆盖度及变化具有明显的空间异质性,草甸草原覆盖度呈显著增加趋势(P<0.01),荒漠草原覆盖度呈显著减少趋势(P<0.01)。2000年为旗县草地覆盖度变化的主要节点。人类活动是锡林郭勒草原植被动态的主导因素,研究区多年人类活动因素的综合贡献率为65.06%。中东部和南部部分区域植被在人类积极作用下得到了显著改善,但西部和北部荒漠草原区的植被仍然呈现退化趋势。建议加大荒漠草原区生态政策实施力度以保障草地生态系统的可持续性。 展开更多
关键词 植被覆盖度 气候 人类活动 残差分析 贡献率 锡林郭勒草原
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Spatiotemporal patterns of the forage-livestock balance in the Xilin Gol steppe,China:implications for sustainably utilizing grassland-ecosystem services 被引量:3
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作者 qu yingbo ZHAO Yuanyuan +2 位作者 DING Guodong CHI Wenfeng GAO Guanglei 《Journal of Arid Land》 SCIE CSCD 2021年第2期135-151,共17页
Understanding the spatiotemporal patterns of the forage-livestock balance is imperative for regionally arranging animal husbandry production while ensuring sustainable grassland-ecosystem service use.The Xilin Gol ste... Understanding the spatiotemporal patterns of the forage-livestock balance is imperative for regionally arranging animal husbandry production while ensuring sustainable grassland-ecosystem service use.The Xilin Gol steppe is an important native grassland resource in Inner Mongolia Autonomous Region,China.This study aimed to elucidate the dynamics of the forage-livestock balance in the Xilin Gol steppe during the period 2000–2015.We evaluated the forage production and corresponding livestock carrying capacity(LCC)in the growing seasons of 2000–2015 using remote sensing data and field surveys.The spatiotemporal patterns of the forage-livestock balance were then assessed at regional,city(including city,county and banner),and village scales using statistical and household survey data.The results showed that both forage production and LCC decreased in the Xilin Gol steppe from east to west.During the period 2000–2015,the regional average forage production and corresponding LCC fluctuated without following a distinct trend,but were consistent with the variations in precipitation.The forage-livestock balance varied with time,space,and scale.At the regional scale,steppes were overgrazed in the early 2000s,but a forage-livestock balance or even grazing potential was achieved in other years.At the city scale,approximately half of the region exhibited a"forage-livestock balance"since 2000.However,about half of the region still experienced overgrazing,which mainly located in the southwest sandy zones.Such changes may have been affected by the variations in grassland quality,forage production,compensation payment,and so on.We suggest a location-specific management scheme for grazing constraints,ecological compensation payment,and industry development to aid in harmonizing animal husbandry and environmental restoration,while promoting sustainable development goals by 2030. 展开更多
关键词 forage production livestock carrying capacity forage-livestock balance Xilin Gol steppe sustainable development
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