文档介绍：西北林学院学报 2008 , 23( 5) : 51~54
Jour nal of Northwe st Fore st ry U nive rsity
北洛河流域退化植被的生物恢复措施
徐文梅, 李亚妮, 廉振民, 王文强
(延安大学,陕西延安 716000)
摘要:依据地貌、气候等特征,把北洛河流域分为黄土丘陵沟壑区及黄土高原沟壑区。在黄土丘
陵沟壑区的梁峁顶建立水土保持植被,退耕后最适宜还草,可以适当种植灌木;在梁峁阳坡,以水土
保持为主,兼顾生态混交的草灌,并以少量乔木结合;梁峁阴坡以薪炭林为主,草灌乔相结合;在沟
底以培育用材林为主。在黄土高原沟壑区的塬面建立农林草生态经济复合模式,以农耕地为主;塬
坡营造水土保持防护林草带,沿沟边种植根系发达、固土作用强的植物。阳坡以退耕还草灌为主,
阴坡乔灌草相结合;在沟头、沟边, 以建防护林为主。
关键词:北洛河流域;退化植被;生物恢复
中图分类号:S718. 51 文献标识码:A 文章编号:100127461(2008) 0520051204
Countermeasure of Biology Restoration for Degenerated Veget ation of the
Nort hern Luohe River Basin
XU Wen2mei, L I Ya2n i, L IAN Zhen2min , WANG Wen2qia ng
( Yan′an Uni vers it y , Yan′an , S haanxi 716000 , China)
Abstract :According to the landform and climate , the Northern L uohe river basin can be classified into loess
hilly ravine a nd loess plateau hilly ravine. Vegetations varie s in diff erent regions in the p roject of conver2
ting cropland to fore sts a nd gra ssland. In the former , at the top of the girder s , it is suitable to establish
vegetations wit h grass , or bushe s app rop riately. In the sunny slope s , there may be a mixture of grass , bu2
shes and a few arbors , while in the shady slopes firewood is prefer re d. Timber forests are suitable in ra2
vine. In the regions of loess plateau hilly ravine , po unded ecological eco nomy model of agro2forests
and grass is suitab