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OALib Journal期刊
ISSN: 2333-9721
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GIS与RS技术支持下的北京西北地区景观格局优化
DOI: 10.11821/xb200711011, PP. 1223-1231
Keywords: 遥感,地理信息系统,累积耗费距离模型,景观格局优化,北京
Abstract:
在区域尺度上以城市化过程为特征的土地利用活动对景观功能的稳定和景观结构的差异性有着深刻的影响。选择北京西北地区为研究区域,应用RS与GIS技术,对1989年、1996年、2005年三期LANDSATTM图像进行解译判读,深入分析研究区景观格局时空变化特征,发现城市扩展造成了生态绿地破碎化、景观连通性降低及景观单一等一系列问题。在此基础上,本研究以景观流运行受距离、障碍等因素影响原理作为出发点,采用累积耗费距离模型,结合景观组分的生态系统服务功能价值和空间作用,研究了北京西北地区景观结构紧密性和生态功能空间差异,进而构建源地、生态廊道和生态节点等景观组分来加强生态网络的空间联系,最后提出本研究区域的景观格局优化方案。该研究方法及结果对北京地区景观生态规划和建设具有重要的理论依据和和参考价值。
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