退化沙化草地人工补播植被重建研究  

The study on Reseeding Artificially Reconstruction of the Degraded Sandy Grassland in East WuZhuMuQin

作　　者：李泽 卫媛 卻国萍 吕世杰 孙树青 刘红梅[4] Li Ze;Wei Yuan;Que Guoping;Lv Shijie;Sun Shuqing;Liu Hongmei(College of Ecology and Environmental Science,Inner MongoliaAgricultural University Huhhot 010019,China;Institute of Grassland Research of CAAS,Inner Mongolia Huhhot 010010,China;Mengshu Ecological Construction Group co.LTD,Inner Mongolia Huhhot 011517,China;Inner Mongolia Academy of Forestry Science,Inner Mongolia Huhhot 010019,China)

机构地区：[1]内蒙古农业大学草原与资源环境学院,内蒙古呼和浩特010019 [2]中国农业科学院草原研究所,内蒙古呼和浩特010010 [3]蒙树生态建设集团有限公司,内蒙古呼和浩特011517 [4]内蒙古林业科学研究院,内蒙古呼和浩特010019

出　　处：《草原与草业》2020年第1期46-51,共6页Grassland and Prataculture

基　　金：国家重点基础研究计划项目(2016YFC0500603);“十二五”国家科技支撑计划项目(2012BAD13B07)资助。

摘　　要：本研究选用小叶锦鸡儿、沙打旺、沙蒿和羊柴对内蒙古东乌珠穆沁旗退化沙化草地进行人工补播,设置沙质退化草地补播、裸沙地补播、风蚀坑补播和裸沙地沙障+补播和沙质退化草地未补播(CK)5个试验处理,于2009年、2013年~2016年的7月下旬至8月上旬进行野外观测,并对各处理的群落特征、重要值、多样性、现存量和补播植物越冬率等进行了分析和研究。结果表明,沙质退化草地通过补播可增加草地植物种类组成;沙打旺是最适合在沙质退化草地补播的植物种,风蚀坑补播最适宜的草种为羊柴和沙打旺。裸沙地沙障+补播能够保持较高的地上现存量水平,裸沙地补播维持较高的地上现存量时间较长。补播植物越冬率为小叶锦鸡儿>羊柴>沙篙>沙打旺。Caraganamicrophylla,Astragalushuangheensis,Artemisia intramongolica and Hedysarumlaeve Maxim were used as artificial reseeding in the degraded sandy grassland of East WuZhuMuQin,5treadments(sandy degraded grassland reseeding,stable sand reseeding,blowout pit reseeding,stable sand-barrier+reseeding,and non-reseeding(ck))were set.Field observation was made from late July to early August in 2009 and 2013 to 2016,the community characteristics,important values,diversity,aboveground standing crop and overwintering rate of reseeding plants on the different treatments were analyzed.The results were as follows:the plant species composition of grassland increased through reseeding in Sandy degraded grassland.The most suitable plant for reseeding in sandy degraded grassland is Astragalushuangheensis,and the most suitable grass for wind blowout pit reseeding was Astragalushuangheensis and Hedysarumlaeve Maxim.Stable sand-barrier+reseeding maintained a high level tendency of standing crops,and stable sand reseeding coud maintain the higher tendency of standing crops for a longer time.The overwintering rate of the reseeding plants was Caraganamicrophylla>Hedysarumlaeve Maxim>Artemisia intramongolica>Astragalushuangheensis.

关 键 词：乌珠穆沁草地 退化沙化草地 人工补播 植被重建 越冬率 

分 类 号：S812.8[农业科学—草业科学]