土地利用变化驱动力系统分析

AN ANALYSIS ON DRIVING FORCE SYSTEM OF LAND USE CHANGES

该文应用系统论的观点和方法 ,对土地利用变化驱动力的整体性、层次性、动态变化和驱动力作用下的土地利用动态进行了深入分析 ,初步回答了土地利用变化的动力源、驱动力系统内部分力与合力的关系 ,以及驱动力与土地利用变化之间普遍存在的非线性反馈关系等问题 。

Using systematic view and method, this paper gives an in depth analysis of the holistic nature, hierarchy, dynamics of driving force system, and land use dynamics driven by driving forces. It also gives preliminary answers to the questions about the sources of driving forces, the relationships between individual force and composition of all forces in the driving force system, and the nonlinear feedback relationships between driving forces and land use changes, and provides a new clue to the study of land use dynamics. Driving force system consists of diverse driving forces and possesses new function that individual driving force does not have. In such a system, the influence of each driving force on land use is conditioned by other forces. Therefore, the real force driving land use change is the composition of all the forces which is the holistic nature of driving force system. Driving force system has orderly internal structure. Different forces belong to different levels and play different roles in land use change. In the level of driving force system as a whole, it is the composition of all forces that drives land use change, and in sublevels, each driver contributes its force to the composition. There are two types of movements in the driving force system: longitudinal and horizontal. The longitudinal means change of driving forces over time, which is the cause for land use change. The horizontal is interactions among forces in the driving force system and that between the system and its external conditions. According to the system theory, longitudinal movement of a system is determined by its horizontal movement.