祁连山东段北坡干旱山区造林试验  

Afforestation Experiments on the Drought Northern Slope of the Eastern Qilian Mountains

作　　者：李国保 王尚雄 李桂芬 

机构地区：[1]天祝县祁连林场,甘肃武威733000

出　　处：《防护林科技》2016年第6期31-33,共3页Protection Forest Science and Technology

摘　　要：针对祁连山森林生态系统植被退化、水源涵养功能降低等问题,在祁连山东段北坡干旱山区开展了人工造林试验,结果表明:不同的整地方式、不同树种和不同造林地对造林成活率均有显著差异,不同整地方式中平均成活率由高到低依次为鱼鳞坑整地、短水平阶整地、穴状整地;不同造林地处理中,弃耕地造林平均成活率明显高于荒山草地造林;各树种当年平均造林成活率由高到低依次为柠条90.5%、青海云杉74.5%、沙棘71.17%、爬地柏70.83%、祁连圆柏41.67%,3a保存率由大到小依次为柠条88.17%、沙棘65.83%、青海云杉63.33%、爬地柏49.5%、祁连圆柏27.5%。Aiming to the problems of vegetation degradation of forest ecology system and reduction of water conser vation function, afforestation experiments were conducted in the northern slope of the eastern part of drought mountains in Qilian Mountains. Result shows that： different ways of land preparation,different species and different afforestation planting site have significant differences on the survival rate;among different patterns of land prepara tion,the descending order of the mean survival rate is fish scale pit, reversed terrace, cave like site preparation; a mong different afforestation treatments, the survival rate of abandoned farmland afforestation is significantly higher than that in barren mountain ＆ grasslands ; the mean survival rate of Caragana Korshinskii, Picea crassiJblia , Hip pophae rhamnoides ,Sabina procumbens and Sabina przewalskii in the very year is 90.5%, 74.5 %, 71.17%, 70. 83 % and 41. 67 % ; the preservation rate for 3 year old Caragana Korshinskii , Hippophae rhamnoicles, Picea cras siJblia, Sabina procumbens and Sabina przewalskii is 88.17% ,65. 83% ,63.33% ,49.5% and 27.5%.

关 键 词：造林成活率 整地方式 造林地 树种 祁连山东段 

分 类 号：S728.2[农业科学—林木遗传育种]