摘要
通过对天水市 1 979、1 989和 1 996年进行的 3次森林资源调查结果的分析 ,掌握和了解该地区森林资源现状和消长规律 ,以及造成林分、经济林、森林覆盖率等下降的原因 ,并据此提出了保护森林生态系统、提高林分质量的措施和对策 ,对实施天然林保护、恢复和重建天水市森林生态环境具有指导意义。
s: Through analyzing the investigated results of Tianshui forest resources in 1979, 1989 and 1996, the forest present status and it's growth law were understudied, including the reason for decrement of forest stands, cash trees as well as forest coverage. Based on above , countermeasures worked out to protect forest ecosystem and improve forest stands, which is very implement forest protection and restore the damaged forest ecological ecosystem in Tianshui.
出处
《甘肃林业科技》
2001年第1期16-21,共6页
Journal of Gansu Forestry Science and Technology
关键词
天水市
森林资源变化
林分下降
Tianshui
forest resources
change
analysis
resource protection
