成都市土地利用时空结构变化研究

Study on Spatial and Temporal Structure Change of Land Use in Chengdu

随着经济的高速发展,城市化对土地利用结构变化的影响较大,土地利用时空结构变化研究对土地规划及可持续发展具有重要意义。本文对成都市2000—2020年的土地利用数据进行处理,计算土地利用年变化率(R)、土地利用程度综合指数和土地利用变化量(S),得出以下结论:(1)耕地和建设用地变化幅度较大,总体呈增大的趋势;林地和其他土地总体呈减小趋势;水域面积呈现先减少后增加的趋势;(2)2000—2020年以来,土地利用程度综合指数整体呈上升趋势,土地利用日趋集约化,土地利用类型更加单一化;(3)成都市在2000—2005年、2005—2010年和2015—2020年土地处于发展期;而在2010—2015年,土地处于衰退期;并简要分析得到对土地利用结构的主要影响为人口变动、自然因素、产业调整等方面。

With the rapid development of economy,urbanization has a great impact on the change of land use structure,and the study on the spatial-temporal structure change of land use is of great significance to land planning and sustainable development.In this paper,the land use data of Chengdu from 2000 to 2020 were processed,and the annual land use rate(R),comprehensive index of land use degree and land use change amount(S)were calculated.The conclusions are as follows:(1)cultivated land and construction land change greatly,showing an overall increasing trend.Forest land and other land generally showed a decreasing trend.The water area showed a trend of decreasing first and then increasing.(2)From 2000 to 2020,the comprehensive index of land use degree showed an overall upward trend,land use become more intensive and land use types become more single.(3)Chengdu was in the period of land development from 2000 to 2005,2005 to 2010 and 2015 to 2020.From 2010 to 2015,the land was in recession.After a brief analysis,the main influences on land use structure were population change,natural factors and industrial adjustment and so on.