山区县域土地环境质量的客观评价

QUANTITATIVE ASSESSMENT ON MOUNTAINOUS LAND RESOURCE QUALITY IN A COUNTY-WIDE REGION

土地是一种包含了许多自然资源子系统的复杂系统。以四川省开县为例，根据对土地生产潜力制约作用最大、且便于定量描述的热量、水分、气候灾害、土壤肥力等４类因子，利用综合评分法、ＨｉｌｂｅｔｒｔＳｐａｃｅ距离系数法及模糊集理论，探讨了山区县域土地环境质量的客观评价方法．各种方法互相补充、相辅相成，为全面、正确评价土地环境质量提供了一条有效途径．

To develop a new method of quantitative assessment on land resource quality in the mountainous county-wide area, the heat,precipitation, meteorological calamities and soil fertility, which have close relation to the potential productivity of land and can be graded conveniently and quantitatively.Assessment with Hilbert Space distance coefficient and fuzzy sets theory have been applied. Among the above method,each benefits from association with the others,thus advancing an effective way to understand the land resource quality.