科尔沁草原防风固沙功能区群落优化配置技术  

Community Optimization Allocation Technology of Windbreak and Sand-fixation Functional Zone in Horqin Grassland

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作  者:邵羽桐 李政海 赵琪茉 陈佳 曹玥 叶佳琦 SHAO Yu-tong;LI Zheng-hai;ZHAO Qi-mo;CHEN Jia;CAO Yue;YE Jia-qi(School of Environment and Resources, Dalian Minzu University, Dalian Liaoning 116605, China)

机构地区:[1]大连民族大学环境与资源学院,辽宁大连116605

出  处:《大连民族大学学报》2019年第1期44-49,共6页Journal of Dalian Minzu University

基  金:中央高校基本科研业务费专项资金资助项目(0113-20000101)。

摘  要:应用遥感与GIS技术,利用1981-2011年植被年最佳状态图层的年际变化与不同时期的气候状况作对比分析,以获得现实降水量下理论植被覆盖格局和现实水热匹配下的理论植被覆盖格局,从而提高其生态服务功能。研究结果表明:科尔沁草原生态功能区的植被变化情况对气候变化存在规律性响应;科尔沁草原生态功能区中部地区因过度放牧导致其发生轻度中度退化;其生态系统受降水量的限制,过度放牧等人为因素对该地区植被退化影响较大;除人为因素外,水热双因素分析该地NDVI受气候原因影响较大。Using the remote sensing and GIS technology and the comparative analysis between the inter-annual variation of the best state layer of vegetation of the year from 1981 to 2011 and the climate conditions in different periods,the theoretical and the actual water-heat matching vegetation coverage under the realistic precipitation are obtained,so as to improve its ecological service function.The results show that:The vegetation changes in the ecological functional area of Horqin grassland have regular responses to the climate changes.The middle part of the Horqin grassland ecological function area had slight or moderate degradation due to overgrazing.The ecological system of the Horqin grassland ecological functional area is limited by the amount of precipitation,and human factors such as overgrazing affect the degradation of the vegetation in the area greatly.In addition to human factors,NDVI in this area is greatly affected by climatic factors through hydrothermal two-factor analysis.

关 键 词:科尔沁草原 水热匹配 气候变化 防风固沙 

分 类 号:S812[农业科学—草业科学;农业科学—畜牧学;农业科学—畜牧兽医]

 

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