西南喀斯特地区耕地破碎化与石漠化空间格局及耦合关系研究  

Study on Spatial Pattern and Coupling Relationship between Fragmentation and Rocky Desertification of Cultivated Land in Southwestern Karst Area

作　　者：何鑫 钟九生[1] 林双双 代仁丽 何志远 HE Xin;ZHONG Jiusheng;LIN Shuangshuang;DAI Renli;HE Zhiyuan(College of Geography and Environmental Sciences(Karst Research Institute),Guizhou Normal University,Guiyang 550025,China)

机构地区：[1]贵州师范大学地理与环境科学学院(喀斯特研究院),贵阳550025

出　　处：《西南大学学报（自然科学版）》2022年第6期160-170,共11页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金项目(41661081);贵州省科技计划项目([2017]5726-56).

摘　　要：为探究喀斯特地区耕地破碎化与石漠化的空间关系,以贵州省安顺市为研究区域,各乡镇(街道)为研究单元,通过构建耕地景观破碎化评价指标体系获得研究单元耕地破碎化指数,并运用空间自相关和耦合度与耦合协调度模型,分析安顺市耕地破碎化与石漠化空间分布格局及耦合关系.结果表明:①安顺市耕地破碎化程度以中度、重度破碎化为主,石漠化程度主要表现为中度石漠化.②乡镇(街道)间耕地破碎化指数与石漠化指数都表现出明显的空间聚集性.③各种耦合类型的乡镇(街道)数目相差较大,耦合类型以高水平耦合为主,协调类型以中度协调为主,耦合协调度表现出明显的空间聚集性.④研究区内耕地破碎化与石漠化程度耦合关系类型数量从大到小依次为同步型、石漠化滞后型、破碎化滞后型.In order to explore the spatial relationship between the fragmentation and rocky desertification of cultivated land in karst areas,this paper takes Anshun City,Guizhou Province as the research area,and each town(street)as the research unit,and uses the spatial autocorrelation and coupling degree and coupling coordination degree model to analyze the spatial distribution pattern and coupling relationship between the fragmentation and rocky desertification of cultivated land in Anshun City.The results show that:(1)The degree of arable land fragmentation in Anshun City is mainly moderate and severe fragmentated,and the degree of rocky desertification is mainly manifested as moderate rocky desertification.(2)Both the farmland fragmentation index and the rocky desertification index between townships(streets)show obvious spatial agglomeration.(3)The number of towns(streets)of various coupling types is quite different.The coupling type is mainly high-level coupling,and the coordination type is mainly medium coordination.The degree of coupling coordination shows obvious spatial aggregation.(4)The number of types of coupling relationship between the fragmentation of cultivated land and the degree of rocky desertification in the study area is synchronous type,rocky desertification lag type,and fragmentation lag type in descending order.

关 键 词：破碎化 耕地 空间自相关 耦合协调 安顺市 

分 类 号：P931.5[天文地球—自然地理学]