黄羊滩人工固沙林防护期分析与评价  

Analysis and Assessment on Protection Period of Sand-Fixation Plantations in Huangyangtan

作　　者：邢存旺[1,2] 黄选瑞[1] 李玉灵[1] 马增旺[2] 付晓燕 

机构地区：[1]河北农业大学林学院,保定071000 [2]河北省林业科学研究院,石家庄050061 [3]河北小五台山国家级自然保护区管理局,蔚县075700

出　　处：《林业科学》2012年第11期134-139,共6页Scientia Silvae Sinicae

基　　金：国家林业局林业公益性行业科研专项"冀北防风固沙林优化经营调控技术研究"(201104104);河北省林业厅监测项目(0527293)

摘　　要：风沙危害一直是河北省西北部和首都北京的主要环境问题。＂十五＂以来,京津风沙源治理工程被列为我国六大生态工程之一,成为我国生态建设的重点工程。工程实施过程中建有大量的人工固沙林。作为防护林的一个重要种类,人工固沙林既能大面积地改造自然景观,改善人类生活环境,The protection period of a sand-fixation plantation is an important part of sustainable management theory for artificial forests.This study was conducted in an artificial sand-fixation ecosystem in Huangyangtan sandy land,and 18 representational forest stands（grasslands） were selected and investigated.The characteristics of initial protection maturity and protection period were analyzed by the hierarchical clustering method.The result showed that the protection period of sand-fixation plantations could be divided into four types.The first type was referred to no protection period and extremely short protection period.The species in this type included Populus simonii,Robinia pseudoacacia and Astragalus adsurgens.Forests of P.simonii and R.pseudoacacia were not able to reach protection maturity.A.adsurgens grassland had only 5 years of protection period.The second type had short protection period.This type included four vegetables,including Ulmus pumila,Populus bolleana,Salix gordeivii and Pinus sylvestris var.mongolica,and most of them were arbor trees.The protection period was between 21 to 36 years,with late initial protection maturity.The third type had intermediate protection period,including forests of Pinus sylvestris var.mongolica×Amorpha fruticosa,Elaeagnus angustifolia,Caragana korshinskii,Sabina vulgaris and S.vulgaris×A.fruticosa.This type was mainly composed of shrubs.The protection period was between 53 to 75 years,and the initial protection maturity came earlier than the arbor forests.The last type had long protection period which only included forests of Platycladus orientalis,its protection period was as long as 74 to 80 years,initial protection maturity came the latest but the protection period was the longest.

关 键 词：人工固沙林 初始防护成熟 防护期 黄羊滩 

分 类 号：S757.3[农业科学—森林经理学]