Law of Runoff Yield of Man-made Plant Community in Mountain of Central Yunnan Plateau
Based on 3-year continuous observations, the runoffcharacteristics of Pinus armandii man-made plant community are researched, and the results are l isted as follows: The season distribution of precipitation in the area is uneven , the rainfall of wet season (from Jun. to Oct.) accounts for 80% of yea rly gross, the precipitation is mainly brought by rainfall with more than 10m m, and most of the rainfall intensities are less than 5.0mm/h. Monthly change te ndency of runoff is similar to precipitation, and the relativity is preferable. The single rainfall obviously affect surface runoff (R=0.91), the critical single rainfall yielding surface runoff is 22.3mm. The surf ace runoff and subsurface runoff respectively account for 0.58% and 99.42% of to tal runoff, and the forest has obvious function of protecting water resources.
国家科技期刊平台
NSTL
万方数据
维普
