摘要
深圳市是中国经济发展速度最快的沿海开放城市之一，其土地利用效益非常明显，并且具有耦合关系。根据系统科学理论与方法，建立了深圳市土地利用效益耦合模型和相应的指标体系，当耦合度在0°～90°之间时，土地利用效益系统处于协调发展阶段；当耦合度等于45°时，系统最协调。根据此模型计算了1981～2004年间土地利用效益耦合度。结果表明，1981年以来，深圳市土地利用社会经济与生态环境效益都处于上升状态，前者持续快速上升；而后者总体上升，有所波动。深圳市土地利用效益的耦合度演化可分为4个阶段。1981～1985年间，土地利用效益耦合度从-36．29°陕速上升到36．99°，从低级共生状态跃至相对协调状态。1986～1990年间，土地利用效益处于持续、稳定、最佳协调状态，耦合度介于43°～53°之间。1991～1996年间，土地利用效益处于耦合变化状态，耦合度从56．99°上升到79．47°，即从最佳协调状态向不甚协调发展。1997—2004年间，土地利用效益协调程度有所下降，耦合度介于81°-85°之间。
Shenzhen is a coastal opening city of prosperous economy. Land use benefits are very obvious and pose clear coupling relationship in the city. A dynamic coupling model between land use benefits is set up according to the theory and method of general system science. Land use benefit systems are coordinated when coupling degrees change from 0° to 90°. The coupling extent is optimum when coupling degrees are 45°. Corresponding indexes and weights are made out in the light of the model requirement and reality of Shenzhen City. The land use benefits are better and better during the period of 1981 -2004. The socio-economic benefits rise stably and the eco-environment benefits develop fluctuant. The evolving processes of coupling degrees about land use benefits can be divided into 4 stages. The coupling degrees change from - 54.39° to 34.03° during the period of 1981 - 1986. The land use benefits soar from low-grade symbiosis into relatively coordinated development. The coordinated situation of land use benefits is optimum, continuous and stable from 1987 to 1990 because the coupling degrees are close to 45°. The land use benefits are not very coordinated during the period of 1991 - 1995 as the coupling degrees arrive gradually at 73.44°. The coordinated extent of land use benefits decreases during the last 9 years because of high coupling degrees which are close to 90°.
出处
《地理科学》
CSCD
北大核心
2008年第5期636-641,共6页
Scientia Geographica Sinica
基金
国家自然科学基金项目(40471055)资助
关键词
深圳市
土地利用效益
耦合关系
协调发展
Shenzhen City
land use benefits
coupling relationship
coordination development
