CAJ | 학술논문

以南京市1990、2000和2010年T M遥感影像为数据源，选取合适的景观格局指数，运用景观生态学原理和RS、GIS技术，揭示南京市20年的景观格局演变特征。通过生态源点信息提取、最小累计距离耗费模型，构建南京市廊道生态网络。结果表明：①1990-2010年，南京市景观格局变化显著，在斑块类型尺度水平上表现为农田面积大量减少、破碎程度增加，建设用地面积增加、趋向集聚化发展，林地面积增加、斑块形状复杂化，水体景观比例先减后增、形状趋于规则化。在景观尺度水平上表现为景观整体多样性、破碎程度增加，自然景观空间异质性增强，各景观类型斑块形状相似化发展；②在累计耗费距离大的源地间构建垫脚石，可以有效增强景观的连通性、优化生态网络结构、发挥其生态服务功能。
이남경시1990、2000화2010년T M요감영상위수거원，선취합괄적경관격국지수，운용경관생태학원리화RS、GIS기술，게시남경시20년적경관격국연변특정。통과생태원점신식제취、최소루계거리모비모형，구건남경시랑도생태망락。결과표명：①1990-2010년，남경시경관격국변화현저，재반괴류형척도수평상표현위농전면적대량감소、파쇄정도증가，건설용지면적증가、추향집취화발전，임지면적증가、반괴형상복잡화，수체경관비례선감후증、형상추우규칙화。재경관척도수평상표현위경관정체다양성、파쇄정도증가，자연경관공간이질성증강，각경관류형반괴형상상사화발전；②재루계모비거리대적원지간구건점각석，가이유효증강경관적련통성、우화생태망락결구、발휘기생태복무공능。
Based on the three TM images of 1990, 2000, 2010 and selected landscape pattern index, the changes of landscape pattern of Nanjing city in the past twenty years were studied by techniques of remote sensing (RS), geographical information system (GIS) and landscape ecology theory. The ecological corridor network was built on basis of extracted ecological source regions and the least-cost distance model. The results showed that: The changes of landscape pattern of Nanjing city were notable. Class-level indexes indicated that the area of farmland landscape decreased and the degree of patch fragmentation aggravated. The area of construction land increased, and it tended to distribute intensively. The proportion of forest increased and the shape of patches was more complex. The proportion of water ifrstly decreased, then increased, and the shape of them became more regular. Landscape-level indexes indicated that biological diversity and the degree of fragmentation increased. Spatial heterogeneity of the whole landscape was enhanced and the shape of these four landscape patch types became similar; Stepping-stones which were used to enhance the connectivity and optimize the ecological network should be built, which can help improve the ecological services.