昆山市土地生态质量空间分异及其对土地利用程度的响应

Distribution of Land Ecological Environment and Its Response to Landuse Intensity in Kunshan County

随着社会经济的快速发展,土地生态质量备受关注。选取位列中国百强县之首的昆山市为研究区,基于2012年各类数据,建立土地生态质量综合评价体系,采用皮尔逊相关系数、二元Moran指数等方法,以行政村为评价单元,对该市土地生态质量的空间格局及其对土地利用程度的响应进行了研究。结果表明:该市土地生态质量整体较好,中心城区向外围乡镇变好梯度格局明显;土地生态质量受到土地利用程度较为显著的负面影响,其中生态结构方面受到的影响最为明显,南部旅游用地地区土地利用和生态质量则协调较好;该市今后在土地开发利用的同时应注意加强生态环境的保护与建设。

With the continuous development of social economy, human alteration to ecosystems is becoming more and more obvious. What＇s more, the growing contradiction between people and land highlights the im- portance of scientific management and regulation of land. Landuse is a special behavior led by human to alter and utilize the land in order to achieve particular purposes. Kunshan County is a highly developed area with a large population. In order to pursue sustainable development, the quality of its land ecological environment has become considerable challenges. In this paper, we provided the complete ecological assessment of land use in 2012. Then, we analyzed the distribution of land ecological environment in Kunshan County, and of- fered its distribution. Finally, we made a thorough inquiry between land ecological environment and landuse intensity. Supported by statistical analysis, we got a negative correlation trend between those two, revealing the ecological quality of the land affected by the intensity of landuse. However, as a special kind of construc- tion land, tourism sites had a high level of landuse intensity, while the protection from the government also contributed to the high ecological status of the land. On the other hand, two scores of the concentrated water areas in the downtown both show the low level.