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应用生态学报 ›› 2005, Vol. 16 ›› Issue (10): 1830-1837.

• 研究论文 • 上一篇    下一篇

基于高分辨率卫星图的川中丘陵区村级景观格局特征研究

李首成1,2, 刘文全2, 程序1, Erle C.Ellis3   

  1. 1. 中国农业大学农学与生物技术学院, 北京 100094;
    2. 四川农业大学生态农业与区域发展系, 雅安 625014;
    3. Department of Geography and Environmental Systems, University of Maryland, Baltimore County 21250, Maryland, USA
  • 收稿日期:2004-11-15 修回日期:2005-03-14 出版日期:2005-10-15 发布日期:2005-10-15
  • 通讯作者: 程序
  • 基金资助:
    美国国家科学基金(NSF)资助项目(grant:DEB-0075617).

Characteristic study on village landscape patterns in Sichuan Basin hilly region based on high resolution IKONOS remote sensing

LI Shoucheng1,2, LIU Wenquan2, CHENG Xu1, Erle C.Ellis 3   

  1. 1. Agronomy and Biotechnical College, China Agricultural University, Beijing 100094, China;
    2. Department of Eco-Agriculture and Rural Development, Sichuan Agricultural University, Ya'an 625014, China;
    3. Department of Geography and Environmental Systems, University of Maryland, Baltimore County, Maryland 21250, USA
  • Received:2004-11-15 Revised:2005-03-14 Online:2005-10-15 Published:2005-10-15

摘要: 以Erle C.Ellis建立的村级景观分类和景观制图方法,利用IKONOS高分辨率(1 m)卫星遥感图,进行典型抽样和地形→土地利用→土地覆被→生态立地的景观分类和分层制图,研究了四川盆地中部丘陵地区村级景观的构成和格局特征,并就有关方法作了讨论.结果表明,川中盆地丘陵村级景观类型多样,其多样性指数从地形、土地覆被、土地利用到生态立地变化在1.0~2.26之间,丰富度除土地覆被较高,达到5%以外,其余都较低,在42.22%~5.62%之间.分布普遍的生态立地类型为12.5%,其余.5%的类型都以较大差异分布在各村级景观内.景观破碎化指数较高,不同村级景观之间为2.93~4.27,地形到生态立地的破碎度为2.6~5.63.村级景观构成中,人口密度、道路面积和农家院落面积与景观格局指数存在较大程度的线性相关关系,但以农家院落面积与景观分形指数、景观破碎度的线性相关显著,分别为0.957*和0.991**.运用景观4级分类和制图方法研究村级景观,多数景观格局指标都表现出显著的统计学差异,表明运用高分辨率卫星遥感图研究村级景观,以多级景观单元分类研究比单一分类的更能够反映相关信息,增加对村级景观格局的认识和理解.

关键词: 川中丘陵, 村级景观, IKONOS, 景观分类, 景观格局

Abstract: To realize the landscape programming of agro-ecosystem management,landscape-stratification can provide us the best understanding of landscape ecosystem at very detailed scales.For this purpose,the village landscapes in densely populated Jintang and Jianyang Counties of Sichuan Basin hilly region were mapped from high resolution (1 m) IKONOS satellite imagery by using a standardized 4 level ecological landscape classification and mapping system in a regionally-representative sample of five 500?500 m2 landscape quadrats (sample plots).Based on these maps,the spatial patterns were analyzed by landscape indicators,which demonstrated a large variety of landscape types or ecotopes across the village landscape of this region,with diversity indexes ranging from 1.08 to 2.26 at different levels of the landscape classification system.The richness indices ranged from 42.2% to 58.6%,except that for the landcover at 85%.About 12.5% of the ecotopes were distributed in the same way in each landscape sample,and the remaining 87.5% were distributed differently. The landscape fragmentation indices varied from 2.93 to 4.27 across sample plots,and from 2.86 to 5.63 across classification levels.The population density and the road and hamlet areas had strong linear correlations with some landscape indicators,and especially,the correlation coefficients of hamlet areas with fractal indexes and fragmental dimensions were 0.957* and 0.991**,respectively.The differences in most landscape pattern indices across sample plots and landscape classes were statistically significant,indicating that cross-scale mapping and classification of village landscapes could provide more detailed information on landscape patterns than those from a single level of classification.

Key words: Sichuan basin hilly region, Village landscape, IKONOS, Landscape classification, Landscape pattern

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