首都生态圈典型地区土地利用变化时空差异及政策驱动研究——以河北省围场县为例  

Spatio-temporal characteristics and driving force of land-use change in Beijing's ecological environs—A case study of Weichang County,Hebei Province

作　　者：甘超华[1] 马礼[1] 南秋菊[1] 

机构地区：[1]首都师范大学资源环境与旅游学院,北京100037

出　　处：《中国生态农业学报》2007年第6期165-170,共6页Chinese Journal of Eco-Agriculture

基　　金：国家自然科学基金项目(40671006;40471123)资助

摘　　要：以围场县为例,通过运用多项数量指标对土地利用变化的时空动态特征进行探讨,分析了围场县在生态建设中政策调控对土地利用变化及产业结构调整的影响。结果表明：在时间变化上,1992年~1998年土地利用变化总体较为剧烈,但耕地变化缓慢;1998年～2002年总体变化相对和缓,而耕地减少速度加快,园地则一直快速增加。在地类转移上,1992年～1998年主要是牧草地、未利用地向林地转变为主;1998年～2002年除牧草地、未利用地与前期类似的转移方向外,耕地向林地转移的比重急剧增加。在空间变化上,土地利用结构总体多样性趋于下降,其中四合永镇多样性指数最高并有所增加,御道口乡多样性指数则有所增加,大唤起乡多样性指数则下降至最低。国家生态建设政策引导和调控下的人类活动是导致围场县土地利用变化的最主要原因,而农业结构调整,尤其是近年来大力实施的退耕还林还草则是耕地减少的重要原因。Ecological environs of Beijing have witnessed rapid development,desertification and land degradation in the last decade and post a major threat to BeijingTianjin eco-region.Taking Weichang County of Hebei Province as a case,the paper illustrated spatial-temporal characteristics of land-use change by construction of mathematical index and analysis of social policy effects on land-use change and industrial structure adjustment under ecological construction.The results show great change in land resource from 1992 to 1998 with a gradual reduction in cultivated land.However,from 1998 to 2002,the changes in land resource are gradual,while cultivated land decreases sharply with rapid increase in orchard lands.From 1992 to 1998,the main changes in land-use type are from grassland and uncultivated land to forest land;while from 1998 to 2002,with the exception of the changes above,transformation from cultivated land to forest land increases markedly.Diversity in land-use tends decreases as well.Human effect driven by national ecological construction policy is the rationale behind land-use changes in Weichang County.Agricultural structural adjustment,especially the return from cultivated lands to forestlands or,in recent years,to grasslands is the reason for the decrease in cultivated lands.

关 键 词：首都生态圈 土地利用变化 生态建设 驱动力 土地利用多样性指数 

分 类 号：F321.1[经济管理—产业经济]