论文部分内容阅读
文章以内蒙古东部地区油松人工林带为研究对象，采用１９８９～１９９３年系统观测资料，对穿透降水、树干径流和林冠截留动态变化规律及其在不同时段内的分配比例进行了系统研究。结果表明，穿透降水、树干径流和林冠截留的年度分配比例分别为６２．８％、４．９％和３２．３％；其月份分配为，降水量大的月份，穿透降水、树干径流与林冠截留量相对较大，截留率较小；降水量小的月份则相反。林冠对降水的截留、滞流等方面的水文功能对减少坡地径流、减轻土壤侵蚀等具有重要作用。
Taking the Pinus tabulaeformis plantation belt in the eastern part of Inner Mongolia as the research object, this paper systematically studied the dynamic change rules of penetration precipitation, trunk runoff and canopy interception and its proportion distribution in different periods using the systematic observation data from 1989 to 1993. The results showed that the annual distribution of penetrating precipitation, trunk runoff and canopy interception were 62.8%, 4.9% and 32.3% respectively. The monthly distribution was as follows: the month with large precipitation, penetrating precipitation and trunk runoff With the canopy interception is relatively large, the retention rate is small; the month of small precipitation is the opposite. Precipitation of the canopy of precipitation, stagnation and other aspects of hydrological hydrological function to reduce slope runoff and reduce soil erosion plays an important role.