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当前位置: 首页 > 文章 > 农牧交错区沙地植被自然恢复的机理与应用 世界林业研究 2009,22 (4) 31-35
Position: Home > Articles > Mechanism of Natural Revegetation in Sandy Lands of Agro-pastoral Ecotone in North China and Its Application to Sand Control World Forestry Research 2009,22 (4) 31-35

农牧交错区沙地植被自然恢复的机理与应用

作  者：
杨洪晓;吴波;邓洪涛;卢琦
单  位：
山东邹城太平中学;中国林业科学研究院荒漠化研究所;北京师范大学生命科学学院
关键词：
沙化土地;风沙流;植被重建;固沙植被;自我扩张;土地修复
摘  要：
农牧交错区是我国荒漠化最严重的地区,重建裸露沙地的植被是消除风沙灾害和实现可持续发展的必要途径。即便没有人的帮助,这里的植被也应该能逐渐布满裸露沙地,使之固定。这个过程是通过现存植被斑块向裸露沙地的连续扩张实现的,其中起主导作用的是各地适生性蒿类固沙半灌木,如科尔沁沙地的差巴嘎蒿、浑善达克沙地的褐沙蒿、毛乌素等中西部沙地的油蒿。尽管植被可以逐渐布满流动沙地,但干旱少雨、风大沙多的条件限制了植被的自我扩张速度。在植被的扩张过程受到阻碍的关键时刻,如果能得到人的恰当帮助,植被恢复速度将明显加快。人们可以采用封育、飞播或设置沙障等方式加快植被的恢复进程。不管怎样,都必须顺应沙地植被的自然发展规律,有意识地触发和利用乡土蒿类植物向裸露沙地扩张的能力。
译  名：
Mechanism of Natural Revegetation in Sandy Lands of Agro-pastoral Ecotone in North China and Its Application to Sand Control
作  者：
Yang Hongxiao1,2 Wu Bo3,4 Deng Hongtao5 Lu Qi3,4(1 College of Life Sciences,Beijing Normal University,Beijing 100875,China;2 College of Resources and Environment,Qingdao Agricultural University,Qingdao 266109,Shandong,China;3 Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091, China;4 Key Laboratory for Forest Tree Breeding of State Forestry Administration,Beijing 100091, China;5 Taiping Middle School,Zoucheng 273517,Shandong,China)
关键词：
desertified land,sand drifting,vegetation reconstruction,sand-stabilizing vegetation,self-extending,land rehabilitation
摘  要：
Agro-pastoral ecotone of north China is currently suffering from bad desertification,which causes low vegetation productivity and damaging sand storm,and it is pressing to control it through vegetation reconstruction.It is believed that vegetation with high coverage can colonize all bare land increasingly through its self-development,and then stabilize the sand.Such vegetation can spread by itself from existing patches to bare land around,and the most important species in these processes are mainly those of Artemisia genus,such as Artemisia halodendron in Horqin,Artemisia intramongolica in Hunsandak,and Artemisia ordosica in Mu Us and some other sandy land.Nevertheless,these processes are at times too slow to control sand storm satisfactorily.They are often retarded due to unfavorable conditions such as dry climates,short growing seasons,damaging sand drifting.In order to facilitate vegetation reconstruction,the people can take such measures as land enclosure,aerial seeding,sand barriers,and shrub transplantation.Anyhow,the people ought to take advantage of the native shrubs of Artemisia genus,and try to trigger their self-extending process to bare land.This strategy conforms to the order of nature and local conditions,and then will reward human with effective revegetation.

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