论文部分内容阅读
如何尽快地恢复和扩大祁连山的水源涵养林,是甘肃河西地区建设所要研究解决的重要课题之一。长期以来,人们的注意力放在乔木林的保护和造林更新上,而忽视了灌木林的恢复和发展。时至今日,毁林开荒,破坏灌木的现象仍在不断发生。据张掖、武威两地区的不完全统计,近十几年来被破坏的灌木林达十万多亩,致使林界后移,雪线上升,水源减少。许多事实说明:灌木林在改造祁连山、扩大森林涵养水源能力、发挥多
How to restore and expand the water conservation forest in Qilian Mountain as soon as possible is one of the important topics to be studied and solved in the construction of Hexi Gansu Province. For a long time, people’s attention has been focused on the protection and reforestation of arbor forests, while ignoring the recovery and development of shrubbery. Today, deforestation and destruction of shrubs are still occurring. According to incomplete statistics in Zhangye and Wuwei, more than 100,000 mu of shrubs destroyed in the past decade have caused the backwardness of the forest sector, rising snow lines and decreasing water resources. Many facts show that: shrubbery in the transformation of Qilian Mountains, to expand forest water conservation capacity, to play more