1985-2020年汉江生态经济带土地利用/覆盖演变特征分析  

On the Characteristics of Land-Use Evolution in Hanjiang River Ecological Economic Belt from 1985 to 2020

作　　者：安彬 AN Bin(School of Tourism&Environment/Academician and Expert Workstation of Shaanxi Province,Ankang University,Ankang 725000,Shaanxi,China;Research Center for Rural Revitalization in Southern Shaanxi,Ankang University,Ankang 725000,Shaanxi,China;Shaannan Eco-economy Research Center,Ankang University,Ankang 725000,Shaanxi,China)

机构地区：[1]安康学院,旅游与资源环境学院/陕西省院士专家工作站,陕西安康725000 [2]安康学院,陕南乡村振兴研究中心,陕西安康725000 [3]安康学院,陕南生态研究中心,陕西安康725000

出　　处：《安康学院学报》2023年第6期16-23,共8页Journal of Ankang University

基　　金：陕西省教育厅科学研究计划项目“汉江生态经济带生态系统服务演变及其驱动机制研究”(22JK0233);安康学院校内专项经费项目“1980—2020年汉江流域国土空间格局变化特征与形成机理”(2021AYKFKT03);安康学院高层次人才项目“秦巴山区社会生态系统脆弱性与可持续性生计的时空分异研究”(2019AYQDZR05)。

摘　　要：精准把握汉江生态经济带土地利用/覆盖变化特征,对优化区域国土空间开发具有重要意义。以1985、2000、2010和2020年四期土地利用数据为基础,从土地利用结构、动态度、转移关系等方面分析汉江生态经济带LUCC演变特征。结果表明:(1)1985-2020年汉江生态经济带以林地、耕地为主要用地类型,研究期内土地利用程度综合指数(L)和综合土地利用动态度(R)变化较小,林地、水域和建设用地持续增加,其他用地持续减少。(2)1985-2020年研究区以林地和耕地互转、建设用地转入为主,林地和耕地分别是最为活跃的转入、转出类型。新增林地面积59.99%来自耕地转入,耕地75.58%来自林地转入,灌木地主要来自草地转入,草地和水域、建设用地均主要源自耕地转入。(3)1985-2020年研究区LUCC转移规模不断增多,转移关系更为复杂,其中以由林地向耕地转移变为以耕地向林地转移最为典型,但转移规模和关系存在省际差异。(4)1985-2020年研究区LUCC变化图谱以林地的稳定型为主,其他变化图谱类型均是林地与耕地阶段性角逐转换的结果;河南省稳定型图谱面积占比最多(83.96%),陕西省最少(79.68%);陕西省第二大图谱类型是林地转向耕地的前期变化型,而河南省是耕地转向建设用地的前期变化型,湖北省是耕地转向林地的后期变化型。Accurately grasping the characteristics of land-use/cover change(LUCC)in the Hanjiang River Ecological Economic Belt(HREEB)is of great significance for optimizing regional land space development.Based on the land-use data of four periods from 1985 to 2020,the LUCC evolution characteristics of HREEB were analyzed from the aspects of land-use structure,dynamic degree and transfer relationship.The results show that forest and cropland are the main types of LUCC in the study area,Forest,water and impervious continue to increase,while other land-use types continues to decrease.The overall index of land-use degree(L)and dynamic degree of comprehensive land-use(R)have lttle change during the study period.From 1985 to 2020,the study area mainly focuses on the mutual transfer of forest and cropland,and the transfer in of impervious.Forest was the most active transfer in types,while cropland was transfer out,respectively.59.99%of the newly increased forest area was transferred from cropland,and 75.58%of the cropland was transferred from forest,At the same time,the newly increased shrub should be transferred from the grassland,while grassland,water and impervious were mainly transferred from cropland.The transfer scale of LUCC in the study area was increasing and the transfer relationship was more complex during 1985-2020.The most typical transfer type has changed from forest to cropland before 2000 to cropland to forest land later;However,there are provincial differences in transfer scale and relationship.From 1985 to 2020,the LUCC transfer atlas in the study area was dominated by the stable type of forest land,and other types were the result of the staged competition and conversion between forest and cropland.Henan Province has the largest proportion of stable type map area(83.96%),while Shaanxi Province has the least(79.68%).The second largest transfer atlas in Shaanxi Province was the early change type from forest to cropland,while Henan Province was the early change type from cropland to impervious,and Hubei Province w

关 键 词：土地利用/覆盖(LUCC) 动态度 转移图谱 汉江生态经济带 

分 类 号：F301.24[经济管理—产业经济]