关键词: 土地利用, 可持续性, 指标性质, 综合度量, 过程度量, 莱西市

Abstract:

This article brings forward a set of comprehensive indicators aiming at the temporal process of land use change. Productivity, stability, restorability, equity, self-supporting ability and harmonizing capacity in a rather long period are used to measure the sustainability of land use, and applied in the case study of Laixi City, Shandong Province. Productivity is the growth process of yield per unit of land area. Stability is the coherence and consistency of the productivity and may be presented by variation coefficient V= σ/ā. Restorability is the ability of land use system withstanding outside impacts, such as natural hazard and policy or market changes, and resuming productivity. It can be shown by annual variation. Equity is the degree of justice of land use benefit allocation, and can be measured by the proportion of population at various levels of income. Self-supporting ability presents the extent of supply, improvement, organization and control of land use system itself and may be shown by the proportion of capital assert investment in the total financial income. Harmonizing capacity is the extent of balance between demand for land products and supply of land productivity. The result of the case study shows that land use in Laixi City is sustainable in general. It is evident in the case study that these comprehensive measurements representing processes are concise, effective, reasonable and operationable.

Key words: land use, sustainability, the nature of indicators, comprehensive measurements, process measurement, Laixi city