活化风蚀坑沙障固沙技术及植被恢复  

Sand-fixing Technology with Sand Barrier in Activated Blowout Land Vegetation Restoration

作　　者：曲娜[1,2] 闫婷 黄海广[1,2] 闫德仁 杨制国[1,2] QU Na;YAN Ting;HUANG Hai-guang;YAN De-ren;YANG Zhi-guo(Inner Mongolia Academy of Forestry,Hohhot 010010,China;Hunshandake Sandy Land Ecosystem Position Research Station,Duolun,Inner Mongolia,Duolun 027300,China)

机构地区：[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古多伦浑善达克沙地生态系统国家定位观测研究站,内蒙古多伦027300

出　　处：《内蒙古林业科技》2020年第1期1-7,共7页Journal of Inner Mongolia Forestry Science and Technology

基　　金：国家重点研发计划项目(2016YFC0500803);多伦生态站项目资助。

摘　　要：风蚀坑活化形成的流动沙地直接危害草场,使土地逐渐丧失生产力。结合风蚀坑内风速变化特征,采取风蚀坑及边坡、风蚀坑积沙区沙障固沙技术,恢复风蚀坑植被。结果表明:风蚀坑及边坡设置黄柳沙障3 a,植被覆盖率达到27.0%,植物种为7种;PE纱网沙障植被覆盖率为31.0%,植物种为11种;PLA沙障植被覆盖率达到15.6%,植物种为4种;黄柳+PE复合沙障植被覆盖率达到75.3%,植物种为6种,而对照植被覆盖率为1.6%,植物种2种。在风蚀坑积沙区,设置沙障3 a后,PE纱网沙障植物种达到10种,黄柳+PE沙障为8种,PLA沙障为4种,黄柳沙障6种,而对照为1种;植被覆盖率分别达到50.3%、50.7%、22.7%、40.0%,而对照为4.0%。采取网格或带状PE沙障,带状黄柳+带状PE沙障对风蚀坑植被恢复具有良好效果。The shifting sandy land formed by the activation of blowout is directly harmful for grassland,which can cause the land gradually lose productivity.Combined with the features of wind speed change in blowout,sand-fixing technology with sand barrier in the slope and the sand accumulation area has been adopted to restore the vegetation in blowout.The results show after establishing sand barrier of Salix gordejevii for 3 years,the vegetation coverage has reached to 27.0%,there are 7 plant species.The vegetation coverage has reached to 31.0%for PE gauze sand barrier,11 plant species.The vegetation coverage has reached to 15.6%for PLA sand barrier,4 plant species.The vegetation coverage has reached to 75.3%for the compound sand barrier of Salix gordejevii+PE gauze,6 plant species.The vegetation coverage for the control is 1.6%,2 plant species.In sand accumulation area,after establishing sand barrier for 3 years,there are 10 plant species for PE gauze sand barrier,8 plant species for Salix gordejevii+PE gauze sand barrier,4 plant species for PLA sand barrier,6 plant species for Salix gordejevii sand barrier,and 1 plant species for the control,the vegetation coverage is 50.3%,50.7%,22.7%,40.0%separately,the vegetation coverage for the control is 4.0%.It can have good effect for the vegetation recovery in blowout to adopt grid or strip PE sand barrier,strip sand barrier of Salix gordejevii+PE gauze.

关 键 词：浑善达克沙地 风蚀坑 沙障 流动沙地 植被恢复 

分 类 号：S157.1[农业科学—土壤学]