扎哈公路修建中新增水土流失预测及防治

扎巴至哈城公路沿线自然条件变化较大，土地类型及利用方面差异明显，扰动前后的侵蚀模数差别突出，给水土流失的预测带来一定的困难。根据不同的立地条件和扰动程度，采用数学模型对区域水土流失进行预测，结果表明该公路建设可能造成水土流失的面积为259．82hm^2，原地貌水土流失量为34846．07t，弃土弃渣流失量3362．81t，可能造成的新增水土流失量为11352．19t，侵蚀总量高达46198．26t。针对不同的水土流失特点和危害，提出对应的防治措施。

Forecast and Prevention Measurements on Water and Soil Erosion in the Road from Zaba to Hacheng

With a broken terrain and concentrate precipitation along the road from Zaba to Hacheng, water and soil erosion is seriously developed. Furthermore, because of the natural conditions, soil types and land utilization form vary sharply from place to place along the road, the modulus of water and soil erosion differs much after disturbance by the construction of the road. According to different natural conditions and disturbance degree, this paper forecasts the water and soil erosion by using mathematical model. It shows that the construction of the road will cause an area of 259.82hm2 and a new increase of 11352.19 ton of water and soil loss. Combined with different characteristics and hazards in different places, the author also puts forward different prevention measurements.