农业主产区土地生态安全格局构建——以克东县为例  

Construction of Land Ecological Security Pattern in Main Agricultural Production Areas--Taking Kedong County as an Example

作　　者：张慧[1] 邱凯玉 王宇瑶 林佳[1] 章桂芳 ZHANG Hui;QIU Kaiyu;WANG Yuyao;LIN Jia;ZHANG Guifang(School of Public Administration and Law,Northeast Agricultural University,Harbin 150000,China;School of Earth Science and Engineering,Sun Yat-sen University,Guangzhou 510275,China)

机构地区：[1]东北农业大学公共管理与法学院,哈尔滨150000 [2]中山大学地球科学与工程学院,广州510275

出　　处：《水土保持研究》2021年第6期274-282,共9页Research of Soil and Water Conservation

基　　金：国家自然科学基金(41402297);黑龙江省博士后资助项目(LBH-Z12032)。

摘　　要：为保障东北粮食主产区生态系统安全,尤其是农业生态系统安全,以黑龙江省农业主产区克东县为研究区,构建以“源地—安全区—廊道—节点”为基本框架的土地生态安全格局。以土地利用斑块为基本研究单元,依据土地生态安全评价结果综合识别土地生态源地;通过寻找最小累计阻力值和栅格面积阻力突变点确定生态安全区;借助最小累积阻力模型和GIS空间分析,识别了生态廊道和生态节点。最后为生态安全格局提供了管控措施。结果表明:(1)克东县土地生态系统服务价值和土地生态敏感性整体偏低,其中生态服务价值评价中一般值区面积最大,极值区面积最小;生态敏感性评价中轻度敏感区面积最大,极度敏感区面积最小,生态安全评价的高值分布于县域北部和中部附近;(2)土地生态安全格局由17块土地生态源地、3种不同水平生态安全区、63条生态廊道和18个生态节点构成。通过克东县土地生态安全格局构建研究,在县域内形成了以土地生态源地—生态安全区—生态廊道—生态节点为框架的土地生态安全网络,一定程度上保证了县域内生物多样性稳定和生态系统安全。In order to ensure the safety of the ecosystem in the main grain production area in northeast China,especially the security of the agricultural ecosystem,Kedong County,the main agricultural production area in Heilongjiang Province,was used as the research area,and land ecological security pattern with the basic framework of‘source-safety area-corridor-node’was constructed.Taking land use patches as the basic research unit,the ecological source of land was comprehensively identified based on the results of land ecological security evaluation;the ecological safety zone was determined by finding the minimum cumulative resistance value and the resistance mutation point of the grid area;ecological corridors and ecological nodes were identified by relying on the minimum cumulative resistance model and GIS spatial analysis.Finally,control measures for the ecological security pattern were provided.The results show that:(1)Kedong County's land ecosystem service value and land ecological sensitivity are generally low,among which the area with general value is the largest in the ecological service value evaluation,and the area with extreme value is the smallest;the area with the mild ecological sensitivity is the largest,and the area with the extreme sensitivity is the smallest;the high values of ecological security evaluation distributed near the northern and central part of the county;(2)the land ecological security pattern consists of 17 land ecological sources,3 different levels of ecological security zones,and 63 ecological corridors and 18 ecological nodes.Through research on the construction of land ecological security pattern in Kedong County,a land ecological security network with the framework of land ecological source—ecological security zone—ecological corridor—ecological node has been formed in the county,which guarantees the biodiversity stability and ecosystem security in the county to a certain extent.

关 键 词：农业主产区 最小累积阻力模型 生态系统服务价值 生态敏感性 

分 类 号：F301.2[经济管理—产业经济]