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[1]ZHAI Xiang,LAN Anjun,LIAO Yanmei,et al.Quantitative Identification of Key Areas of Land Space Ecological Restoration Based on the Ecological Security Pattern[J].Research of Soil and Water Conservation,2022,29(06):322-329,343.

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Quantitative Identification of Key Areas of Land Space Ecological Restoration Based on the Ecological Security Pattern

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 06 Page number: 322-329,343 Column: Public date: 2022-10-20

Title:: Quantitative Identification of Key Areas of Land Space Ecological Restoration Based on the Ecological Security Pattern

Author(s):: ZHAI Xiang, LAN Anjun, LIAO Yanmei, MAO Chunyan, SHI Houjun, ZHONG Jiusheng; (School of Geographic and Environmental Sciences, Guizhou Normal University, Guiyang 550025, China)

Keywords:: land space ecological restoration; ecological security pattern; ecological source area; ecological corridor; ecological barrier area; Guizhou Province

CLC:: X171.4

DOI:: -

Abstract:: In order to reveal the spatial distribution characteristics of the ecological security pattern in Guizhou Province and identify the key areas for ecological restoration in its national land space, we used ecological sensitivity evaluation to identify ecological sources by combining with nature reserves, extracted ecological corridors based on the least cumulative resistance model and circuit theory in order to build an ecological security patterns and develop ecological restoration strategies based on the diagnoses of ecological barrier areas by current density. The results are as followings.(1)The study area covered an ecological source area of 26 017.90 km², among which large habitat patches mainly distributed in the eastern part of Guizhou Province. The ecological resistance surface showed the characteristics of ‘gathering in the west and scattering in the east, spreading from the city center'.(2)1 414 ecological corridors with a length of 34 765.84 km² had been constructed, and mainly distributed in river corridors with rich woodland and relatively flat areas.(3)1 374 ecological obstacle areas covering an area of 3 903.04 km² which concentrated in the west and northwest of the study area were diagnosed. Other areas mainly including farmland and woodland were scattered.(4)Based on the constructed ecological security pattern, the strengthening of ecological source areas protection and the restoration of ecological barrier areas, the targeted restoration strategies for different ecological landscapes were proposed through initiating various restoration projects at all levels. These research results can provide theoretical guidance for the optimization of the ecological security pattern in Guizhou Province, and provide the reference for the ecological protection and restoration of the state territorial space.

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Last Update: 2022-10-20