论文部分内容阅读
在粤北阳山县江英镇设计了祼地、耕地、草坡地3种类型的石漠化试验样地,现场观测降雨在上述3种样地所产生的径流量,分析粤北石漠化地区不同土地利用类型的水流失情况。结果表明,在粤北石漠化地区,绝大部分的雨水下渗成为土壤水和裂隙水,其中祼地的降雨有91.36%下渗,耕地的降雨有95.85%下渗,草坡地的降雨有97.53%下渗。地表径流量祼地>耕地>草坡地,草坡地地表径流深最小,其次为耕地,最大是祼地,说明草坡地对降雨截流的效果最好。
In the north of Yangshan County, Guangdong Province, three types of rocky desertification experimental plots were designed, including runoff, cultivated land and grassland slope. The runoff of the three kinds of plots was observed on the spot, and the rocky desertification in northern Guangdong Regional water loss in different types of land use. The results showed that most of the rainwater infiltration into the soil water and fissure water in the rocky desertification area of northern Guangdong, of which the infiltration rate of 91.36% in the hilly land, the infiltration of 95.85% in the cultivated land, the rainfall in the hilly land 97.53% infiltration. Surface runoff 祼 land> arable land> grassland, grassland surface runoff minimum minimum, followed by arable land, the largest is the ground, indicating that grassland on the best rainfall interception.