论乡土树种在达县退耕还林工程中的作用  

On the Role of Native Tree Species in Returning Farmland to Forest Project in Daxian

作　　者：苟洪昱 牟必春 王岱立 

机构地区：[1]达县林业局,四川达县635000 [2]达县铁山森林公园,四川达县635000

出　　处：《河北农业科学》2009年第7期22-23,26,共3页Journal of Hebei Agricultural Sciences

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.

关 键 词：引种树种 乡土树种 退耕还林 达县 

分 类 号：S725.1[农业科学—林木遗传育种]