摘要
概述了四川省达县气候、土壤、河流和森林植被等状况,分析了退耕还林的必要性,重点分析了引种树种与乡土树种的品质、保土固水能力和适应性等方面的差异,提出在退耕还林中应重点发展乡土树种,以达到对水土流失标本兼治的目的。
The climate, soil, river and forest vegetation in Daxian are introduced. The necessity of returning farmland to forest is analyzed, and the differences of qualities, ability of conserving soil and water between native tree species and introduced tree species are emphatically analyzed. The native tree species should be emphatically developed in returning farmland to forest to control the soil and water loss from the symptoms and root cause.
出处
《河北农业科学》
2009年第7期22-23,26,共3页
Journal of Hebei Agricultural Sciences
关键词
引种树种
乡土树种
退耕还林
达县
Introduced tree species
Native tree species
Returning farmland to forest
Daxian
