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

Abstract

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

CLC Number:

Q149

LI Shoucheng, LIU Wenquan, CHENG Xu, Erle C.Ellis . Characteristic study on village landscape patterns in Sichuan Basin hilly region based on high resolution IKONOS remote sensing[J]. Chinese Journal of Applied Ecology, 2005, 16(10): 1830-1837.

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