乌拉特地区不同群落草本生物量分析
2021-11-26贾珂慧蓝登明崔爱露
贾珂慧 蓝登明 崔爱露



摘要 以乌拉特荒漠植被为研究对象,通过查阅文献资料、野外调查、植物标本鉴定,依照植物生态学知识,运用统计学知识对乌拉特荒漠植被进行分析,了解乌拉特地区的植被组成,研究乌拉特不同群落对短花针茅草本生物量的影响。结果显示:①乌拉特地区有野生灌木植物51种,隶属于11科,29属;野生草本植物131种,隶属于28科,79属。②当群落中没有灌木出现时,草本植物的根系就不需要太深入土壤汲取水分和养分。③同一地区的不同群落草本层片生物量随群落中的灌木生物量增加而减少,随灌木高度增加而减少,随灌木盖度增加而减少。研究表明,乌拉特地区植物种类较少,以旱生、超旱生植物为主,植被生存环境差,灌木对草本植物生物量影响显著。
关键词 荒漠植被;生物量;群落组成
中图分类号 S 812 文献标识码 A
文章编号 0517-6611(2021)21-0082-03
doi:10.3969/j.issn.0517-6611.2021.21.020
开放科学(资源服务)标识码(OSID):
Analysis of Herbaceous Biomass of Different Communities in Urat Region—Taking Stipa breviflora as an Example
JIA Ke-hui, LAN Deng-ming, CUI Ai-lu
(College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot,Inner Mongolia 010010)
Abstract Taking Urat desert vegetation as the research object, through consulting literature, field investigation, plant specimen identification, according to the knowledge of plant ecology and using statistical knowledge, this paper analyzes the Urat desert vegetation, understands the vegetation composition in Urat region, and studies the impact of different communities in Urat on the herbaceous biomass of Stipa breviflora.The results showed that: ① there were 51 species of wild shrubs plants in Ulat region, belonging to 11 families and 29 genera;there were 131 species of wild herbs, belonging to 79 genera and 28 families.② When there were no shrubs present in the community, the roots of herbaceous plants do not need to go deep into the soil to absorb water and nutrients.③ The herbaceous layer biomass of different communities in the same area decreased with the increase of shrub biomass, with the increase of shrub height and with the increase of shrub coverage.The results showed that there were few plant species in Urat region, mainly xerophytes and super-xerophytes, the vegetation living environment was poor, and shrubs had a significant impact on the biomass of herbaceous plants.
Key words Desert vegetation;Biomass;Community composition
基金項目 国家科技部基础资源调查专项(2017FY100204)。
作者简介 贾珂慧(1993—),女,内蒙古包头人,硕士研究生,研究方向:林业。 *通信作者,教授,硕士,硕士生导师,从事干旱、半干旱地区植物资源保护与利用方面的研究。
收稿日期 2020-12-28
生物量是植物的基本生物学特征和功能性状之一,是反映生态系统结构和功能稳定性的重要指标;物质和能量积累是生物量的基本体现[1-2]。生物量作为一种生态表征,可以用来分析植被生产能力,还可以提供一些评价植物群落、种群构建特征的基础数据[3]。生物量分配指植物生长发育过程中所需要的总资源分别分配给植物各器官积累资源的比例,这是植物生殖与生存平衡自我分配的结果[1]。……
