红河流域(云南段)土地生态安全的时空演变及驱动因素分析  

Spatiotemporal evolution and drivers of land ecological security in Honghe River Basin(Yunnan section)

作　　者：包广静[1] 姬超 刘仪 马庆超 曹宁一 吴锋[3] 侯大伟[4] BAO Guangjing;JI Chao;LIU Yi;MA Qingchao;CAO Ningyi;WU Feng;HOU Dawei(College of Logistics and Management Engineering,Yunnan University of Finance and Economics,Kunming 650221;School of Public Finance and Management,Yunnan University of Finance and Economics,Kunming 650221;Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Sciences,Beijing 100101;College of Public Administration and Law,Northeast Agricultural University,Harbin 150030)

机构地区：[1]云南财经大学物流与管理工程学院,昆明650221 [2]云南财经大学财政与公共管理学院,昆明650221 [3]中国科学院地理科学与资源研究所,北京100101 [4]东北农业大学公共管理与法学院,哈尔滨150030

出　　处：《环境科学学报》2024年第4期463-473,共11页Acta Scientiae Circumstantiae

基　　金：NSFC-云南联合基金重点支持项目(No.U2102208);云南财经大学科学研究基金项目(No.2023B08)。

摘　　要：土地生态安全分析是维护区域生态安全和保障土地资源可持续利用的关键,对于区域生态环境保护和生态文明建设具有重要的意义.基于DPSIR基础框架构建了红河流域(云南段)土地生态安全评价体系,在明晰其在2010—2020年间土地利用类型时空变化特征的基础上,利用突变理论、空间自相关分析和地理探测器等方法,揭示了其土地生态安全时空演变规律和驱动因素,并在此基础上提出了对应的措施.结果表明:2010—2020年,红河流域(云南段)以耕地、林地和草地为主,占据了研究区总面积的98%以上,其中,耕地和林地年均增长率分别为167.11 km^(2)·a^(-1)和758.19 km^(2)·a^(-1),而草地面积缩减了9445.54 km^(2);土地生态安全综合值在2010—2020年期间呈现出波动减小的趋势,且呈现出持续上升、持续降低、先升后降和先降后升态势的县区所占比例分别为6.98%、25.58%、34.88%和32.56%;土地生态安全热点区域的面积比例在研究期间(2010、2015、2020年)不断增加,其占比分别为13.73%、20.95%和22.01%,且呈现出由北部区域向南部区域迁移的空间态势,对应的冷点区域的面积比例持续提升,其占比分别为11.58%、19.50%和20.66%,并呈现出由北部向南部迁移并逐步零散分布在研究区域的空间变化特征;人口密度(X5)、年均温度(X10)、年降水量(X11)和景观破碎度(X14)是影响土地生态安全的主要因素,其对应的q值均高于0.4.研究结果可为提升红河流域(云南段)土地生态安全水平、完善流域生态环境保护政策、维护土地资源可持续利用等提供理论和现实依据.The land ecological security is crucial for maintaining regional ecological security and ensuring the sustainable utilization of land resources.It holds significant importance for regional ecological environment protection and the construction of ecological civilization.Based on the DPSIR framework,the land ecological security evaluation system for the Honghe River Basin (Yunnan section) was constructed.The spatiotemporal evolution and the drivers of land ecological security were revealed,and the corresponding measures were proposed by the methods of catastrophe theory,spatial autocorrelation analysis,and geographic detector.The results showed that the the cropland,forestland,and grassland were the main land-types of the Honghe River Basin (Yunnan section),accounting for over 98%of the total area from 2010 to 2020.The annual growth rates of cropland and forestland were 167.11 km^(2)·a^(-1) and 758.19 km^(2)·a^(-1),respectively,while the grassland area decreased by 9445.54 km^(2).The comprehensive value of land ecological security showed a trend of decreasing fluctuation during 2010—2020.The proportions of the four types of counties,namely,sustained increase,sustained decrease,increase followed by decrease,and decrease followed by increase,were 6.98%,25.58%,34.88%and 32.56%,respectively.The hot-spots area of land ecological security continuously increased and exhibited a spatial shift from the northern region to the southern region.Meanwhile,the cold-spots area increased continuously and displayed a north-to-south shift and gradually scattered distribution in the research area.The q values of Population density (X5),Annual average temperature (X10),Annual precipitation (X11),and Landscape fragmentation (X14) were exceeding 0.4,indicating that which were the main drivers of the land ecological security.The research results can provide theoretical and practical basis for enhancing the land ecological security level,improving basin ecological environment protection policies,and ensuring the sustainable utilizatio

关 键 词：DPSIR模型 突变理论 土地生态安全 地理探测器 红河流域(云南段) 

分 类 号：F301.2[经济管理—产业经济] X321[环境科学与工程—环境工程]