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为探讨黄土区公路边坡土壤水分与植被生长关系,通过调查取样,测定了黄土区公路边坡的土壤水分状况,并记录了相应边坡的植被现状,结果表明:(1)调查路段沿线土壤含水量差异较大,呈现东部高于西部,南部多于北部的特点;此外,对于不同的坡形,填方边坡土壤含水量一般值在8~20%之间,挖方边坡土壤含水量一般值在10~20%之间。(2)调查区公路边坡植被整体上植被盖度差异较大,植被盖度在0.1~0.95之间,并且区域上呈现自东向西的逐步减少,西北部地区公路边坡植被退化较为严重。在不同坡形上,填方边坡植物长势要好于挖方边坡。
In order to explore the relationship between soil moisture and vegetation growth on highway slope in loess area, soil moisture status of highway slope in loess area was measured and vegetation status of the corresponding slope was recorded by sampling. The results showed that: (1) The water content is quite different, showing the eastern part is higher than the western part and the southern part more than the northern part. In addition, the soil moisture content of the fill slope is generally between 8 and 20% for different slope shapes, and the soil moisture The general value of 10 to 20%. (2) Vegetation coverage of roadside slope in the surveyed area varies widely with vegetation coverage ranging from 0.1 to 0.95, and the area shows a gradual decrease from east to west. The vegetation degradation on the highway slopes in the northwestern part of China is more serious . On different slope shapes, the slope of the fill slope is better than the cut slope.