晋陕蒙接壤区土地退化及其治理预测

本文土地退化主要有水土流失、风蚀沙化、草场退化、此生盐渍化、土壤贫瘠化5种类型。根据土地综合评价值计算，16个县土地退化总面积21955.25km2,所造成的经济损失十分巨大。为此，提出了重点治理区和一般治理区的治理预测，其中包括治理目标、治理重点、治理措施和治理投资。

PREDICTION ON LAND DEGRADATION AND CONTROL IN CONTIGUOUS AREA OF JIN-SHAN-MONG

Five types of land degradation are identified mainly in soil and water losses,wind erosion and desertification, grassland degradation, secondary salinization-alkalization, and soil impoverishment in the study area. Computations on integrated land evaluation values reveal that total land degradated area covers 21955. 25square kilometers in 16 counties, causing great economic losses. In the study,control predictions consisting of key control area and general control area are suggested including control target, focus of control, control measures, and investment for control.