干旱区生态环境知识资源中心(Arid): 民勤荒漠草地机械沙障对草地结构及物种多样性的影响

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	民勤荒漠草地机械沙障对草地结构及物种多样性的影响
其他题名	Effects of Mechanical Sand Barriers on Vegetation Structure and Species Diversity in Minqin Desert Grassland
	李昌龙; 张永虎; 段晓峰; 赵鹏; 邱晓娜
来源期刊	中国草地学报
ISSN	1673-5021
出版年	2021
卷号	43 期号:12 页码:100-106
中文摘要	通过对民勤地区3个治理基地的9种机械沙障样地和1个对照样地进行植被调查,研究机械沙障对荒漠草地结构和物种多样性的影响,探讨机械沙障与沙生植物间的相互作用。结果表明:(1)荒漠草地物种数量随着沙障设置以及治理年限的增加而逐渐增加(从2种增加到3~7种),植被结构由沙蓬(Agriophyllum squarrosum)优势种群向五星蒿(Bassia dasyphylla)优势种群演变,由一年生草本的单一型向一年生草本+多年生草本+灌木的复合型演变。(2)物种alpha多样性变化存在地域性与治理年限的差异,在该区域小尺度地理范围内由南向北呈递减趋势。而随着治理年限增加,物种丰富度、多样性指数均呈增加趋势,alpha多样性指数顺序为稻草秆网格沙障>尼龙网格沙障、建筑垃圾网格沙障、黏土行式沙障>小麦秆网格沙障、玉米秆行式沙障、葵花秆网格沙障、葵花秆行式沙障>玉米秆网格沙障>无沙障流沙地(CK)。(3)治理年限对物种beta多样性影响有显著差异性,beta指数为黏土行式沙障>葵花秆网格沙障、玉米秆网格沙障>稻草秆网格沙障、尼龙网格沙障>小麦秆网格沙障、葵花秆行式沙障、建筑垃圾网格沙障>玉米秆行式沙障>无沙障流沙地(CK)。群落共有度指数和群落相异性指数存在沙障材料的差异性,不同农作物秸秆沙障之间差异不显著,但与黏土行式沙障和尼龙网格沙障之间的差异显著(P<0.01)。
英文摘要	This study conducted vegetation surveys on nine mechanical sand barrier plots and a control(CK) plot in 3 experimental bases in Minqin area.The impact of mechanical sand barrier on plant community structure and species diversity was studied in desert grassland,and the interaction between mechanical sand barrier and desert plants was also explored.The results showed that:(1) The number of species gradually increased with the increase of sand barriers and management duration (from 2 species to 3~7 species).The community structure evolved from the dominant population of Agriophyllum squarrosum to Bassia dasyphyll.The lifestyle of plant species evolved from the single type of annual herb to the mixed type characterized by annual herb,perennial herb and shrub.(2) The change of species alpha diversity had regional and management duration differences,which showed a decreasing trend from south to north in the small-scale of geographic range of the region.With the increase of management duration,the species richness and diversity index exhibited an increasing trend.The rank of species alpha diversity affected by sand barrier was showing as follows:rice straw grid sand barrier >nylon grid sand barrier,construction waste grid sand barrier,and clay line sand barrier >wheat straw grid sand barrier,corn straw line sand barrier,sunflower straw grid sand barrier,and sunflower straw line sand barrier >corn straw grid sand barrier >CK.(3) Management duration had a significant impact on species beta diversity.The rank of beta index affected by sand barrier was showing as follows:clay line sand barrier >sunflower straw grid sand barrier and corn straw grid sand barrier >rice straw grid sand barrier and nylon grid sand barrier >wheat straw grid sand barrier,sunflower straw line sand barrier,and construction waste grid sand barrier >corn straw line sand barrier >CK.There were differences in sand barrier materials in community commonality index and community dissimilarity index.There was no significant difference among different types of straw sand barriers.However,there was a significant difference with clay line sand barrier and nylon grid sand barrier(P <0.01).
中文关键词	荒漠草地 ; 机械沙障 ; 植被结构 ; 物种多样性
英文关键词	Desert grassland Mechanical sand barriers Plant community structure Species diversity
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Agriculture
CSCD记录号	CSCD:7122354
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378067
作者单位	李昌龙, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;甘肃省治沙研究所, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;, 武威;;武威;;兰州, 甘肃;;甘肃;;甘肃 733000;;733000;;730070, 中国.; 赵鹏, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;甘肃省治沙研究所, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;, 武威;;武威;;兰州, 甘肃;;甘肃;;甘肃 733000;;733000;;730070, 中国.; 张永虎, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省治沙研究所, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;, 武威;;兰州, 甘肃;;甘肃 733000;;730070, 中国.; 段晓峰, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;甘肃省治沙研究所, 甘肃民勤荒漠草地生态系统国家野外科学观测研究站;;, 武威;;兰州, 甘肃;;甘肃 733000;;730070, 中国.; 邱晓娜, 甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;甘肃省治沙研究所, 甘肃省荒漠化与风沙灾害防治国家重点实验室培育基地;;, 武威;;兰州, 甘肃;;甘肃 733000;;730070, 中国.
推荐引用方式 GB/T 7714	李昌龙,张永虎,段晓峰,等. 民勤荒漠草地机械沙障对草地结构及物种多样性的影响[J],2021,43(12):100-106.
APA	李昌龙,张永虎,段晓峰,赵鹏,&邱晓娜.(2021).民勤荒漠草地机械沙障对草地结构及物种多样性的影响.中国草地学报,43(12),100-106.
MLA	李昌龙,et al."民勤荒漠草地机械沙障对草地结构及物种多样性的影响".中国草地学报 43.12(2021):100-106.