金沟岭林场森林水源涵养功能与价值研究

Water conservation of forest in Jingouling forest farm and its value

为适应森林多功能经营的需要,以金沟岭林场为研究区域,根据森林资源二类调查资料和固定样地观测数据,动态评估主要森林类型及龄组的水源涵养量,利用影子工程法评价水源涵养价值量。结果表明：金沟岭林场1997年与2007年的水源涵养量分别为4 560.2×10~4、4 273.6×10~4 t,涵养水源的经济价值量分别为3 137.1、2 935.4万元;在不同森林类型中,针阔混交林蓄水量最大;10 a间,幼龄林的水源涵养价值量基本一致,中龄林与成熟林的价值量呈现增长的趋势,近熟林水源涵养价值量有所下降。

According to the field survey and the data of sample plots of the forest management inventory of the Jingouling forest farm which is chosen as the study area, the water source conservation was based on the water storage of different vegetation canopies and age groups. Using the shadow engineering method to calculate the value quality, the result shows that the water source conservation of 1997 and 2007 was respectively 4 560.2×10~4 t and 4 273.6×10~4 t, the value quality was 31.371 million yuan and 29.354 million yuan. In different forest types, mixed wood has the largest storage capacity. Among 10 years, water conservation of young forest value changed a little, value of mid-maturation and mature forest increased, value of nearly mature forest declined.