| The central content of study on the land sustainable utilization evaluation is the construction of index system, which can comprehensively weigh the sustainability of land utilization and find out the obstacle factors. The sharp contradiction between human and land urgently need to be evaluated and monitored its sustainability. But the research of the land sustainable utilization evaluation index system in Sichuan Province still is in the blank at present, therefore, the conformation of land sustainable utilization evaluation index system of suiting the regional characteristic of Sichuan is of great significance.The five land utilizing districts of Sichuan Province are regard as the study elementary unit. On the basis of relative research about home and abroad, the characteristic of land utilization state and issue are systematically analyzed. Adopting special and illegal method, eighty evaluation indexes are preliminantly drafted from the four respects of resource, the environment, economy and society. Thirty-six experts and professors who worked in university and institute with relation to land management and administrators who worked in the management department about land, agriculture, forestry, water conservancy and weather are invited to give a five grade judgement, and statistically analyze the conaultant results by using mean, variance coefficient and degree of satisfication to select evaluation index accepted commonly. On this basis, combining with the opinins of relative experts to decide to accept or deny and finally set up the land sustainable utilization evaluation index systems of Sichuan Province and various regions. Choosing 2003 data of Chengdu, Panzhihua over the years of 1998-2003 year of Sichuan Province, analytic approach of the level, method of linear ratio conversion and comprehensive index method are adopted to calculate the value of comprehensiveevaluation and systematically testify the scientific and reasonability of corresponding regions' index system. The results of study are:(1) The land sustainable utilization evaluation index system in Sichuan Province consists of 30 evaluation indexes related to four big classes of resource, the environment, economy, society. Among them: The indexes with regional charecteristics were productivity index of cultivated land, domestic animal's ability of annul meadow, forest growth and decline balance the index, water and soil resources and balance, proportion of area of soil erosion, rate up to standard of water quality of surface water, meadow degrade control rate, the ratio of GDP to environmental protection, urbanization level, index of the agricultural income, forestry's income index, income index of the animal husbandry, cultivated land reduce and coordination, the difference index of Engel in urban and rural areas, land case index, etc. 16 evaluation indexes.(2) The results of evaluation index system of various districts show: The evaluation index system of Chengdu plain district, hills area of basin, the region of mountain in week of the basin, plateau district of high mountain in the northwest of Sichuan consist of 28, 29, 17, 19, 11 respectively. The typical indexes with regional trait of Chengdu plain district are rate up to standard of water quality of surface water, handling rate of the industrial sewage, the cultivated land reduces and coordination the index with economic development, the ratio of production base for commercial food, urban construction land increases elastic coefficient, land population and bears the weight of the pressure index, land case index. The typical indexes with regional trait of hills area of basin are balanced index of water resource, control rate of soil erosion, surface water water quality getting up to standard, agricultural income index, level of water conservancy construction, land and population of garden bear the weight of pressure index. The typical indexes with regional trait of the region of mountain in week of the basin are slope cultivated land concede the land area proportion, the ratio of investment for environmental protection to GDP, forestry's incom index, commercial trees area proportion. The typical indexes with regional trait of plateau district of high mountain in the northwest of Sichuan are forest growth and decline to index, develop and utilize the degree index in hydroenergy, forestry's incom index, garden ground area proportion , commercial trees area proportion , agricultural water conservancy construction competence. The typical indexes with regional trait of plateau district ofhigh mountain in the northwest of Sichuan are meadow domestic animal ability, meadow degradation area proportion, income index of the animal husbandry.(3 ) The result of study of the real example shows: the synthetical index of land sustainable utilization of Sichuan Province in 1998-2003 is 0.661-0.711, the land utilization is in the weak sustainable utilization state and there is trend to developing the sustainable state. The resource, environment, economic, social subsystem value are in 0.793-0.773, 0.493-0.594, 0.645-0.645, 0.591-0.716 respectively. Relativing to total goal, resources sustainable is relatively excellent, the developing state of social acceptability is fine, but environment sustainable and economic feasibility are relatively weak. The synthetical index of land sustainable utilization evaluation of Chengdu, Panzhihua are 0.698 and 0.686 respectively. The land utilization is in the weak sustainable state. From the view of horizontal comparative analysis of 2003, the land utilization state of Sichuan Province, Chengdu, Panzhihua are comparatively unanimous, there are certain differences among the subsystems. Among them, resources of Sichuan Province is slightly excellent, the environments sustainability of Chengdu and Panzhihua is better. The economic feasibility of Sichuan Province and Chengdu City are weak. The society's acceptability of Panzhihua is the lowest. The result of study and land utilization state of example regional are relatively identical. Therefore, the land sustainable utilization evaluation index systems of Sichuan Province can reflect preferably the actual land sustainable utilization state of Sichuan Province. |
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