摘要
采用定位研究及对比流域的方法,对黑龙江省现有森林的水源涵养效益的量值进行了测定,并由等效益物替代原则统一到贷币量纲上进行经济评价。研究结果表明:①黑龙江省现有森林水源涵养效益的年价值达105.4亿元,占全省农业总产值40.6%。②森林水源涵养效益值大大超过了森林木材生产直接效益值,二者之比值为1.44。③森林具有明显地削减洪峰、增加水资源的作用。黑龙江省现有森林每年增加水资源量达2.3×10^(10)m^3,占全省水资源总量的36%。
The soil and water conservation function of artificial Pinus tabulaeformis forest was studied systematically.The study includes an examination of soil physical and chemical properties,crown interception,water-holding capacity of the litter,soil perpeability,overland flow,soil loss.It is confirmed that artificial Pinus tabulaeformis forest has a distinct function of water and soil conservation. The function are affected by forest age and structure.The older forest age is, the more remarkable the function are.The function of mixed forest are more markable than that of pure forest.This study also include a determination of biomass and an establishment of the correlation equation between total biomass and organs biomass.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第2期20-26,共7页
Journal of Northeast Forestry University
基金
林业部"八.五"攻关课题"森林生态系统定位研究"部分内容。
关键词
黑龙江省森林
水源涵养效益
经济评价
Taihang Mountain
Artificial Pinus tabulaeformis forest
Water and soil conservation function
Overland flow
Soil loss
