架空输电线路对自然保护区土地利用转移的影响研究

Research on the impact of overhead power transmission lines on land use transfer in nature reserves

针对十堰~卧龙500千伏输电线路工程,基于ArcGIS平台研究了塔基对自然保护区内土地利用类型和功能的影响,构建了土地利用转移矩阵,分析了土地利用转移态势和结构的变化。结果表明:在大西沟、赛武当和丹江口库区3个自然保护区中,林地转出强度(R T)值分别为1.068、1.24、1.023,灌草地RT值分别为1.067、0.75、0.954,单一土地利用类型的转出强度和整体土地利用转出强度均较弱;3个自然保护区的建设用地动态度(KT值)分别为+8.15、+7.2和+0.72;土地转移后,3个自然保护区的建设用地面积分别从初始阶段的0.35%、0.32%、3.36%增加至0.385%、0.34%、3.39%。

The influence of tower foundation on land use types and functions in nature reserves along the 500 kV power transmission line from Shiyan to Wolong was studied using ArcGIS platform.The situation of land use transfer and changes of land use structure were analyzed by establishing a land use transfer matrix.The results showed that,for the Daxigou,Saiwudang and Danjiangkou nature reserves,the transfer intensity(RT)values of forest land were 1.068,1.24,and 1.023,respectively,and the RT values of irrigated grassland were 1.067,0.75 and 0.954,respectively.The transfer intensities of single land-use and overall land-use types were both low.The construction land dynamics degrees(KT)of the above three nature reserves were+8.15,+7.2 and+0.72,respectively.After the land transfer,the construction land area of the nature reserves increased from 0.35%,0.32%and 3.36%to 0.385%,0.34%and 3.39%.