杭州市土地资源承载力评价及其协调发展

Evaluation of land resources carrying capacity and its coordinated development in Hangzhou City

土地资源承载力是区域协调发展的重要指标,基于驱动力-压力-状态-响应的研究框架构建杭州市土地资源承载力的指标体系,并运用熵权TOSPSIS方法对杭州市2009—2017年土地承载力及其各子系统水平进行评价,同时引用障碍度模型对杭州市土地承载力的障碍因素进行诊断,最后采用耦合协调模型对杭州市承载力子系统内部的耦合协调性进行了研究。结果表明:(1)在2009—2017年杭州市土地资源承载力的评价结果呈波动上升趋势,评价年限内土地承载力整体水平处于中级状态,但距离优质承载力仍有一定的差距;(2)从2009年到2013年,障碍度因素主要集中在驱动力系统和压力系统,2014—2017年,障碍度因素主要集中于状态系统和驱动力系统;(3)在研究区间内杭州市承载力系统整体的耦合协调度较好,但距离优质协调仍有不小的差距,其中承载力系统耦合度总体较高,除2009年处于拮抗级别外,其他年份均处于高水平耦合级别,并且在研究年份内各年的耦合度评价结果均高于耦合协调度评价结果,同时评价区间内系统耦合协调度变化大致呈“初级协调到良好协调再到初级协调”的态势。

Background,aim,and scope In general,most of the researches on the carrying capacity of land resources are related to the evaluation of the carrying capacity level of regional land resources,but there is a lack of research on the coordinated development of carrying capacity elements.Since the carrying capacity of land resources is a complex system composed of many factors and its coordinated development of internal elements plays an important role in the improvement of land carrying capacity level,in this paper,based on the construction of index system of the carrying capacity of regional land resources,the evaluation research on the coupling coordination of the level and elements of regional land carrying capacity was conducted.Materials and methods In this paper,based on the research framework of driving force-pressure-state-response,the index system of carrying capacity of land resource in Hangzhou city was constructed,and the entropy weight TOSPSIS method,obstacle degree model pair and coupling coordination model were used to comprehensively evaluate the carrying capacity of land resources in Hangzhou city.Results(1)From 2009 to 2017,the evaluation results of the carrying capacity of land resources in Hangzhou city showed an upward trend of fluctuation.The overall level of the land carrying capacity within the evaluation years was in an intermediate state,but there was still a certain gap from the high quality carrying capacity.(2)From 2009 to 2013,obstacle degree factors were mainly concentrated in the driving force system and the pressure system.From 2014 to 2017,obstacle degree factors were mainly concentrated in the state subsystem and the driving force system.(3)The overall coupling coordination degree of carrying capacity system of Hangzhou city was good within the research range,but there was still a large gap from the high quality coordination.The change of the coupling coordination degree of the system in the evaluation range roughly showed a trend of“primary coordination to good coordination and then to primary coordination”.Discussion Although the level of carrying capacity of land resources in Hangzhou city is in the state of fluctuating growth,its carrying capacity level is still in a low state,and there is a large gap from the high quality carrying capacity,so relevant measures should be still taken for adjustment.Conclusions During the evaluation years,the coupling degree of the carrying capacity system of land resources in Hangzhou city was at a high level of coupling level,but there was a certain gap between the level of coupling coordination degree of carrying capacity system and the high quality coordination,which shows that the coordination and consistency among each carrying capacity element need to be improved.Therefore,it is necessary to take specific measures to improve the coordinated development between each carrying capacity system,so as to improve the regional carrying capacity.Recommendations and perspectives Through the comprehensive evaluation results of the carrying capacity of land resources in Hangzhou city,it can be seen that in order to improve the carrying capacity level of regional land,the coordination between each carrying capacity system should be reached first.Therefore,it is necessary to first pay attention to the regional land planning and promote the coordinated development between each carrying capacity system;control the intensity of land development,optimize the structure of land use,improve the efficiency of land use and increase the economic output of land at the meanwhile;in the current economic development under the new normal,Hangzhou city should give full play to its own characteristics and at the same time give consideration to the green development of the region,through the innovation of science and technology to improve the ecological environment,increase support of environmental protection spending for ecological protection,vigorously play land ecosystem service function,and eventually promote the constant improvement of the level of carrying capacity of the regional land resources.