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Integrated identification and classification of rural ecological land.

FEI Jian-bo1,2, XIA Jian-guo1*, OU Ding-hua1, SHU Xiang-yang1, HU Jia3   

  1. (1College of Resource, Sichuan Agricultural University, Chengdu 611130, China; 2Center of Land Consolidation and Rehabilitation in Sichuan Province, Chengdu 610041, China; 3Agricultural and Rural Bureau of Lizhou District of Sichuan Province, Guangyuan 628000, Sichuan, China).
  • Online:2020-03-10 Published:2020-03-10

Abstract: Urban land has long been the hotspot of ecological land research, while rural ecological land has gradually been valued in recent years. In this study, 10 indicators including ecological sensitivity and habitat quality were selected from three aspects: resource characteristics, morphological characteristics and functional characteristics of rural ecological land to construct a rural ecological land identification index system, and to make comprehensive identification and classification of rural ecological land in the hilly area of central Sichuan Province. The identification index system comprehensively reflects the characteristics of rural ecological land use, and can identify ecological land with strong ecological function as well as high habitat quality and nonecological land that is not suitable for inclusion in the category of ecological land. Core, auxiliary and baseline ecological land accounted for 20.48%, 34.41% and 41.16% of the study area, respectively. The core ecological land was mainly consisted of forest land, grassland and waterarea, while the auxiliary and baseline ecological land were mainly consisted of cultivated land. The spatial distribution of ecological land in the study area is characterized by auxiliary ecological land > baseline ecological land > core ecological land > non-ecological land, and the spatial distribution difference is basically consistent with the terrain (high in the northeast, and low in the southwest). There is a one to many relationship between land use/cover type and rural ecological land type, which is mainly caused by the degree of human activity, spatial distribution of geological hazards and differences in topography. Our results can provide references for constructing regional pattern for ecological security, optimizing land use mode, coordinating the contradiction between regional production development and ecological protection, enriching the contents of spatial planning and rural geography.