摘要
文中对人工油松林地土壤理化性质、林冠截留,枯落物持水、土壤入渗、地表径流、土壤侵蚀等几方面比较系统地进行了研究。结果表明,油松林具有显著的水土保持功能;水土保持功能受林龄和林分结构的影响,林龄越大,水土保持功能越显著;混交林的水土保持功能高于纯林。同时对与水土保持功能密切相关的生物量进行了计算,建立了总生物量和各器官生物量的回归方程。
Based on located study and contrast watershed experiment,the water conservation benefit of forest in Heilongjiang were measured and evaluated.The results showed that the annual value of water conservation of forest was 1.054 ×10^(10)yuan,40.6% of the total output,value on agriculture in the whole province;water conservation benefit of forest was much larger than wood production benefit,the ratio of both was 1.44;forest obviously decreased flood and increased water resource.water resource increased by forest now available was 2.3×10^(10)m^3,36% of the total water resource in the whole province.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1996年第2期14-19,共6页
Journal of Northeast Forestry University
基金
本文是"八.五"攻关项目"太行山林业生态工程生态效益研究"部分内容。
关键词
太行山
油松
人工林
水土保持功能
地表径流
Heilongjiang forest
Water conservation benefit
Economic evaluation
