不同利用方式对大针茅草原主要植物种数量特征的影响  

Influence of Different Utilization Patterns on Quantitative Feature of Main Plant Species in Stipa grandis Steppe

作　　者：阿荣[1] 李治国[1] 王静[1] 韩国栋[1] 

机构地区：[1]内蒙古农业大学生态环境学院,内蒙古呼和浩特010019

出　　处：《内蒙古林业科技》2015年第2期36-40,共5页Journal of Inner Mongolia Forestry Science and Technology

基　　金：国家科技支撑项目(2012BAD13B02);内蒙古自治区重大科技项目(20110732;20120249)资助

摘　　要：以大针茅+羊草草地为研究对象,设置割草场和放牧场两种利用方式样地,并分别对其主要植物种及群落功能群的地上生物量、高度、盖度、密度的变化进行研究。结果表明:糙隐子草在放牧场的地上生物量与密度显著高于割草场,而麻花头在割草场的地上生物量显著高于放牧场(P<0.05);羊草和麻花头在割草场的高度显著高于放牧场(P<0.05);主要植物种的盖度在两种利用方式下均无显著性差异(P>0.05)。除多年生禾草以外,多年生杂类草、一、二年生草本与小半灌木在不同利用方式下均差异显著(P<0.05)。总体来说,放牧对群落主要植物种的影响很明显。Taking the grassland of Stipa grandis ＋ Leymus chinensis as research object, the research on the change of above - ground biomass, height, coverage and density of main plant species and functional group have been done in mowing pasture and grazing pasture. The results show that the above - ground biomass and density of Cleistogenes squarrosa in grazing pasture are higher than the ones in mowing pasture obviously, the above - ground biomass of Serratula centauroides in mowing pasture is higher than the one in grazing pasture obviously （ P 〈 0. 05 ）, and the height of Leymus chinensis and Serratula centauroides in mowing pasture are higher than the ones in grazing pasture obviously （ P 〈 0. 05 ）. There isn＇ t significant difference for the coverage of main plant species with two kinds of u- tilization patterns （ P 〉 0. 05 ）. Except perennial grass, there is significant difference for perennial weeds, 1 ～ 2 - year herbs and semishrub with different utilization patterns （ P 〈 0. 05 ）. In general, grazing can obviously influencethe main plant species of community.

关 键 词：大针茅草原 割草场 放牧场 主要植物种 数量特征 

分 类 号：S812[农业科学—草业科学]