文章在描述相关研究进展的基础上,认为在物质资源不断减少的情形下,物质代谢效率提高对于人类社会发展具有更为重要的意义。并在此基础上,分析了土地利用方式、土地利用强度、土地利用布局等土地利用变化过程对于物质代谢变化的影响机理。以江苏省为例进行实证分析,构建区域土地利用变化的物质代谢驱动力模型。结果表明,随着1989年以来江苏省土地利用强度的不断提高,物质代谢通量快速增长。土地利用强度越高,物质代谢通量值越大,土地利用强度提高10%,则物质代谢通量将提高5.62%,因此,资源利用量与污染物排放量越多,带来的环境冲击也就越大;但土地利用强度越高,物质代谢效率值就越小,土地利用强度每提高10%,物质代谢效率就提高5.03%,因而单位GD P的资源利用量与污染物排放量也就越少。虽然物质代谢效率在提高,但是物质资源日益稀缺,物质代谢效率需进一步提升。最后提出了区域土地利用变化物质代谢效应响应的研究方向。

Based on descriptions of correlative studies,this paper firstly reveals the overall flows of food,energy,water,material and wastes into and out of the Greater Jiangsu Area quantitatively.At present,as the material resources are rapidly reducing,the increase in material metabolism efficiency has become more and more important to the development of human society.Then it analyzes the mechanism of the impact of land use change process(such as the change of land use manner,land use intensity and allocation of land use) on material metabolism taking Jiangsu province as a case.A driving force model has been established.It turns out that with constant increase in land use intensity the material metabolism flux has also increased rapidly since 1989.The higher the land use intensity is,the greater the flux value of material metabolism.Hence,the more the resources consumed and the pollutant discharged,the greater impact on the environment will be exerted.In other words,the smaller efficiency value of material metabolism is related to the less unit GDP resources consumed and pollutant discharged.When land use intension rises by 10%,the material metabolism flux will rise by 5.62%.Every 10% rise in land use intensity can lead to a ascend of 5.03% of the material metabolism efficiency.Though the efficiency of material metabolism has been improved,the scarcity of material resources became more and more serious.So it is necessary to further improve the efficiency of material metabolism.Finally,the direction of the study is put forward about the material metabolism response to regional land use change.