江苏典型灌区农业水土资源匹配现状及其承载力特征  

Matching Status and Bearing Capacity Characteristics of Agricultural Water and Land Resources in Typical Irrigation Districts of Jiangsu Province

作　　者：曲绅豪 姚怀柱[2] 王彦东 陈于 彭亚敏 房凯[3] 佘冬立[1] Qu Shenhao;Yao Huaizhu;Wang Yandong;Chen Yu;Peng Yamin;Fang Kai;She Dongli(College of Agricultural Science and Engineering,HoHai University,Nanjing 210098,China;Development Center for Rural Water Conservancy and Technology of Jiangsu Province,Nanjing 210029,China;Water Conservancy Bureau of Suqian,Suqian,Jiangsu 223800,China)

机构地区：[1]河海大学农业科学与工程学院,南京211100 [2]江苏省农村水利科技发展中心,南京210029 [3]宿迁市水务局,江苏宿迁223800

出　　处：《水土保持研究》2023年第6期452-457,467,共7页Research of Soil and Water Conservation

基　　金：国家自然科学基金(42177393);江苏省水利科技项目(2021054);宿迁市重点研发计划项目(S202101)。

摘　　要：[目的]客观分析灌区农业水土资源匹配状况和承载力水平,进而促进灌区农业高质量发展和保障国家粮食安全。[方法]以江苏典型灌区为研究对象,通过计算基尼系数与农业水土资源匹配系数进行水土资源匹配现状分析,通过构建涵盖水土资源、经济、生态和社会子系统的灌区农业水土资源承载力评价体系,运用熵权法TOPSIS(technique for order preference by similarity to ideal solution)、障碍度和耦合协调度模型,对典型灌区农业水土资源承载力系统健康度、影响因子和耦合协调度开展了研究。[结果](1)典型灌区基尼系数G=0.26,优于同期全国水土资源匹配水平,各灌区水土资源匹配系数为2800~11500 m^(3)/hm^(2),水土资源匹配水平差异显著;(2)各灌区水土资源承载力系统处在中低等水平,现状条件下开发潜力有限,社会子系统为影响承载力系统健康度的关键因素;(3)各灌区水土资源承载力系统处在基本协调发展状态,耦合协调度与承载力系统健康度呈正相关关系,系统耦合协调性很大程度地限制了农业水土资源承载力的发展。[结论]江苏典型灌区整体水土资源均衡,各灌区之间水土资源匹配水平和承载力健康度差异显著,灌区各子系统之间存在不均衡发展,社会子系统成为限制承载力系统健康度发展的关键因素。[Objective]The aim of this study is to analyze of agricultural land and water resources matching and carrying capacity level in irrigated areas,so as to promote the high quality development of irrigated areas and ensure national food security.[Methods]This study took the typical irrigation areas of Jiangsu Province as the research object.The matching degree of land and water resources was analyzed by applying Gini coefficient and the matching coefficient method.An evaluation system for carrying capacity of agricultural water and land resources in irrigation areas was established,including water and land resources,economic,ecological and social subsystems.TOPSIS(technique for order preference by similarity to ideal solution),obstacle model and coupling coordination degree model were used to study the health degree,influence factors and coupling coordination degree of the carrying capacity system of agricultural water and land resources in typical irrigation areas.[Results]The Gini coefficient of typical irrigation areas was 0.26,which was better than that of the national averages in the same period.The matching coefficient of water and land resources in all irrigation areas ranged from 2800 to 11500 m^(3)/hm^(2),and the matching level of water and land resources was significantly different among different irrigation areas.The carrying capacity system of water and land resources in the irrigation areas was at a medium low level,and the development potential of water and land resource was limited in the current situation.The social subsystem was the key factor affecting the health degree of the carrying capacity system.The carrying capacity system of water and land resources was in a state of basic coordinated development.The coupling coordination degree was positively related to the health degree of the carrying capacity system.The system coupling coordination greatly restricted the development of the carrying capacity of agricultural water and land resources.[Conclusion]Typical irrigation areas of Jiangsu Province

关 键 词：农业水土资源 承载力 熵权法TOPSIS模型 障碍度 耦合协调度 

分 类 号：F323.21[经济管理—产业经济]