少数民族山区土地利用结构时空变化及其驱动力分析——以广东省连山县为例

Analysis on the spatio-temporal change of land utilization construction and its driving forces in minority mountain area——A case of Lianshan County in Guangdong province

以广东连山县1996—2006年各地类土地数据为基础,对其土地利用变化速度、土地利用结构信息熵及均衡度进行了分析。研究表明:近10年来,连山县土地利用结构信息熵和均衡度在时间上经历了缓慢增加到平稳的变化过程,其土地利用结构的均质性较低,且变化不十分明显;在空间上具有具有明显的分异规律,即永和镇、太保镇、吉田镇和福堂镇土地利用结构信息熵和均衡度均高于全县同期的平均值,而小三江镇、上帅镇和禾洞镇的土地利用结构信息熵和均衡度均低于全县同期的平均值。在此基础上进一步探讨了自然因素、人口变化、经济因素和政策调对连山县土地利用结构信息熵和均衡度动态变化的驱动机制。

Based on the data of land utilization change in Lianshan County Guangdong Province from 1996 to 2006, the paper analysed the land utilization variation rate, the land utilization structure information entropy and the equilibrium degree.The result indicated that the Lianshan County land utilization structure information entropy and the equilibrium degree had experienced the process of the increased and the steady change during the ten years, and the land utilization structure homogeneity rised slow/y; in the spaces, the land utilization structure＇s information entropy and the equilibrium degree had the spatial differentiation rule, overall, Yonghe Town, Taibao Town, Jitian Town and Futang Town＇s land utilization structure information entropy and the equilibrium degree were higher than the county-wide mean value in the same time; Xiaosanjiang Town, Shangshuai Town, and Hedong Town＇s land utilization structure information entropy and the equilibrium degree were lower than the county-wide mean value in the same time. On these basis, the paper analysis furtherly the driving mechanism that the factors of natural, the population change, the economic and the macro-policies affected the land utilization structure information entropy and the equilibrium degree.