摘要
无锡市作为位于长江三角洲地区的核心地域,2000年实施新城市化战略以来城市化水平大幅上升,但对这一时期无锡市土地利用景观变化的研究相对较少。本文从景观生态学的角度研究无锡市2001—2008年间的土地利用景观变化,发现无锡市的土地利用变化速率较快,且递减最快的为耕地,而递增最快的为建设用地及园地;无锡市2000年之前景观格局基本构型以大斑块为主,景观格局较为单一,但2001—2008年该地区剧烈的人类活动使得这些大斑块发生破碎化,导致不同景观类型的斑块数量不断增加,各类用地所占比例的差异逐步减少。总体上看,无锡市的景观多样性在增加,景观优势度在减少。
From the point of view of landscape ecology, this article researches the landscape changes during 2001-2008 in Wuxi. We found that the change rate of land use varies faster in Wuxi compared with other re- gion, and the fastest decline is cultivated land while the fastest increasing land is used as construction and gar- den land. In Wuxi City, the various types of land use landscape move in or out is frequently. Arable land is the major type transferred out while construction land, orchard and woodland landscape are types mainly transferred to. This shows that the problems of non-cultivated land and non-arable land of agricultural land in Wuxi City are prominent. The landscape pattern affected larger by human activities, which makes the original plaque broken. So that the numbers of different landscape types are increasing and the degree of landscape fragmentation raises, especially arable land. But at the same time, driven by urbanization and industrialization of intensive management, patches of the construction land, orchard and woodland landscape aggregate and expand. The dominance gradually increases and the growth of the fragmentation＇s degree has been alleviated to some extent. Whenever from the view of several landscape type or the overall level of landscape, the frag- mentation of landscape in Wuxi has a great growth. The sustained growth of patch number and density show that the degree of human interference is increasing. With the rapid economic growth, population growth, cli- mate and other natural environment changes, the extent of human interference on the plaque is greater than before, which resulted in dysfunction of landscape ecology. Another issue requiring attention is the sharp drop of agricultural land. The over-exploitation of agricultural land use will inevitably lead to the lack of reserve land resources. Simultaneously, the rapidly expanding of the construction land and the slow development of management efforts will also bring a series of ecological and environmental problems.
出处
《人文地理》
CSSCI
北大核心
2012年第4期94-97,共4页
Human Geography
基金
国家自然科学基金项目(41171133)
南京师范大学大学生创新实践项目
