摘要
以重庆开县为研究对象,运用景观生态安全格局理论,结合RS、GIS技术,选取土壤侵蚀、地形位、景观类型、植被覆盖、石漠化5个生态阻力因子,利用层次分析法、单因子加权求和,构建最小累积阻力模型,综合分析得到开县的景观生态安全格局的空间分布.结果表明:在研究区中部和南部海拔低、坡度小、地势较平坦、植被覆盖度大、土壤侵蚀能力较弱、岩溶性不敏感或轻度敏感的地区生态安全水平高,其景观覆盖类别主要为耕地、园地、建筑用地,这些地区可优先作为开县未来城市空间扩展用地.
This paper chooses Kaixian of Chongqing as the research objects and uses landscape ecological security pattern theory with combining remote sensing with GIS skill and selecting five ecological resistance factors which including soil decays terrain niche, land use classification, vegetation and rocky desertification. After AHP, single factor weighted sum building minimum cumulative resistance model,and through a comprehensive analysis,the landscape ecological security setup of dimensional distribution of Kaixian is obtained. The results of the research indicate that there are centralized and large areas which are flat terrain with high vegetation covered,insensitive or mildly sensitive karst area and weak capacity of the soil erosion in the south and middle part of study area. These regions are high level of ecological safety,and mostly are arable land,orchard and constructive land. These regions can be a priority for the future extension of urban space in Kaixian.
出处
《河南科学》
2017年第7期1139-1145,共7页
Henan Science
基金
四川省教育厅科研项目(15ZB0066)
国土资源部地学空间信息技术重点实验室重点研究课题(KLGSIT2013-027)
关键词
景观生态安全格局
最小累积阻力模型
重庆开县
landscape ecological security pattern
minimum cumulative resistance model
Kaixian
