贝加尔针茅草原植物多样性与地上生物量及其关系对刈割的响应

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英文篇名：Response of Plant Species Diversity and Aboveground Biomass and Their Relationship in Stipa baicalensis Grassland to Mowing 作者：郭明英 ; 卫智军 ; 吴艳玲 ; 闫瑞瑞 ; 乌仁其其格 英文作者：GUO Ming-ying;WEI Zhi-jun;WU Yan-ling;YAN Rui-rui;WU Renqiqige;Hulunber Grassland Station;College of Grassland,Resources and Environment,Inner Mongolia Agricultural University;College of Life Science and Technology,Inner Mongolia Normal University;National Field Observation Station of Hulunbuir Grassland Ecosystem/Key Laboratory of Resource Remote Sensing and Digital Agriculture,Ministry of Agriculture/Institute of Agricultural Resources andRegional Planning,Chinese Academy of Agricultural Sciences;Life Science and Chemistry School,HulunbuirCollege; 关键词：贝加尔针茅草甸草原 ; 刈割 ; 植物多样性 ; 地上生物量 英文关键词：Stipa baicalensis meadow steppe;;Mowing;;Plant diversity;;Aboveground biomass 中文刊名：CDXU 英文刊名：Acta Agrestia Sinica 机构：呼伦贝尔市草原工作站;内蒙古农业大学草原与资源环境学院;内蒙古师范大学生命科学与技术学院;呼伦贝尔草原生态系统国家野外科学观测研究站/农业部资源遥感与数字农业重点开放实验室/中国农业科学院农业资源与农业区划研究所;呼伦贝尔学院生命科学与化学学院; 出版日期：2018-11-15 出版单位：草地学报 年：2018 期：v.26 基金：国家重点研发计划“北方草甸退化草地治理技术与示范”(2016YFC0500603);; 内蒙古农业大学“草地资源教育部重点实验室”资助 语种：中文; 页：CDXU201806034 页数：4 CN：06 ISSN：11-3362/S 分类号：237-240

摘要

本研究以呼伦贝尔贝加尔针茅割草地为研究对象,探讨刈割干扰对植物群落多样性和地上生物量及其关系的影响。结果表明:刈割时间对植物的优势度和均匀度指数有显著影响,留茬高度对植物多样性影响不显著。随着留茬高度的增加,地上生物量显著下降;刈割时间对群落地上生物量影响不明显。植物多样性和地上生物量呈显著正相关关系。
        The effect of mowing on plant community diversity,aboveground biomass and their relationship in Stipa baicalensis grassland of Hulunbuir was studied.The result showed that mowing time had significant effect on the dominance and evenness index of plant,but stubble height had no significant effect on plant diversity index.The aboveground biomass significantly reduced with the increase of stubble height,which was no difference among cutting times.Plant diversity and aboveground biomass showed a significant positive correlation.

引文

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