阿克苏河流域土壤资源定量评价方法及评价结果

QUANTITATIVE EVALUATION OF SOIL RESOURCES IN AKSU RIVER VALLEY AND GOTTEN RESULTS

本文着重讨论了阿克苏河流域土壤资源定量评价所采用的方法:在对各土壤评价单元的评价因素量化基础上,借助建立的定量评价模型,确定各评价单元中的土壤是否适宜农、林、牧及其适宜等级,并判断出不同适宜性的限制因素及其限制程度。另外,还简单介绍了所得的评价结果.

A system of polysuitability and a method of quantitative appraisal of soils are used inAksu River valley. The system and the method can evaluate not only the soil Suitabilities toagriculture, forestry, and animal husbandry and the suitable grades, but also the limitativefactors and their limitation levels. The results reflect the potential productivity corre-sponding with the polysuitability possessedhy the majority of the soils. The main procedures of evaluation of the soils, on the basis deciding evaluation factorsand their power coefficients and quantizing every factor, are realized with the aid of twoalgorisms in the model designed for the evaluation: The first one determines the suitabilitiesof the soils and their grades, the second ascertains the limitative factors and their limitationlevels. In the way mentioned above, 'Map of Evaluation of soils in Aksu River Valley'(1:200,000) is made. The distributions of the soils with different suitabilities and their areascan be gotten from the map.