滴灌条件下典型草原区铁路防护体系内植被恢复效果研究  

STUDY ON VEGELATION RESTORATION EFFECT WITH DRIP LRRIGATION OF RAILWAY SHETTER DELT SYSTEM ON TYPICAL GRASSLAND

作　　者：左合君[1] 武志博[2] 郝才元[3] 陈立平[4] 贺慧[1] 

机构地区：[1]内蒙古农业大学生态环境学院,呼和浩特010019 [2]内蒙古阿拉善盟林业治沙研究所,巴彦浩特750306 [3]呼和浩特铁路局工务处,呼和浩特010057 [4]呼和浩特铁路局集宁工务段,集宁012000

出　　处：《内蒙古农业大学学报（自然科学版）》2009年第2期109-114,共6页Journal of Inner Mongolia Agricultural University(Natural Science Edition)

基　　金："十一五"国家科技支撑项目(2006BAD26B05)

摘　　要：本文以集宁-二连浩特铁路赛汉路段护路林、围封地和放牧地3种类型为研究对象,通过自然植被调查,应用SPSS软件对植被种类组成、重要值、群落多样性指数、盖度、生物量以及土壤养分含量等调查数据进行分析,结果表明:防护林和围封草地内植被种类数量均高于放牧草地,围封使植被的种类组成更趋于向典型草原地带性植被的演变;林带、围封地内地带性植物种重要值明显增加,而非地带性和退化指示植物重要值明显下降;3种不同类型样地的Shannon-Weiner指数与Pielou指数排序均为,防护林内>围封草地>放牧地;建设防护林和采取围封措施均可有效地提高植被的盖度、地上生物量和土壤有机质、全氮、速效钾、速效磷的含量;对于铁路这一特殊防护对象在灌溉条件下,建设防护林的效果要优于采取围封措施。Survey on vegetation and utilize SPSS software, and anaylize vegetation species,important value, community variety index, coverage of vegetation, biomass and soil nutrient content of shelter belt, enclosure land, grazing land of Jining- Erlinhot Railroad Line. The results showed ： The vegetation species and quantity of shelter belt and enclosure land were more than grazing land, enclosure caused vegetation species and quantity tended to typical grassland vegetation;the important value of belt vegetation increased remarkably in shelter belt and enclosure land, while non - belt vegetation and degenerate index plant decreased significantly; The Shannon - Weine and Pielouorder index of three samples was ：shelter belt 〉 enclosure land 〉 grazing land;construct shelter belt and take measure of enclosure can improve coverage of vegetation, abovebiomass, soil organic matter, total nitrogen, available kalium, available phosphor; As far as railway protective system with drip irrigation, coustructlng shelter belt is superior effect to enclosure measurements.

关 键 词：铁路防护林 围封 滴灌 植被恢复效果 

分 类 号：S727.27[农业科学—林木遗传育种]