新疆农业科学2017，Vol.54Issue(6)：1145-1151,7.DOI:10.6048/j.issn.1001-4330.2017.06.023
坡向对天山北坡山地草原群落特征的影响
Effects of Slope Aspect on the Community Characteristics of Mountain Steppe in the Northern Slope of Tianshan Mountain, Xinjiang
摘要
Abstract
[Objective] To study the effect of slope aspect on the community characteristics of mountain steppe and to reveal the change rule of plant community in different growing seasons.[Method] The mountain steppe in the northern slope of Tianshan Mountain was chosen as the research object,and the method of field investigation and sampling were used,and grassland community characteristics in the different slopes (the east slope,the west slope and the slope crest) and different growth period (June,July,August and September)were measured.[Result] (1) The important value of Artemisiafrigida in the whole growing season showed the slope crest ＞ the east slope ＞ the west slope;The important value of Stipa capillata in the slope crest and the west slope was significantly higher than that of east slope by 67.1％-673.7％ (P ＜0.05);and the important value of Carex turkestanica in June and July showed the east slope ≥ the west slope ＞ the slope crest.(2) The community coverage of east slope in June,August and September was significantly higher than that of the slope crest and the west slope 21.4％-36.1％ (P ＜0.05),and the community density in August and September was significantly higher than that of thewest slope,but the community aboveground biomass in July was higher than that of the west slope.[Conclusion] The slope and the growing season play important role in the community characteristics of mountain steppe Tianshan Mountains.关键词
坡向/群落特征/重要值/山地草原/天山Key words
slope aspect/community characteristic/important value/mountain steppe/Tianshan Mountains分类
农业科技引用本文复制引用
王玉,安沙舟,董乙强,荀其蕾,郑逢令,侯钰荣..坡向对天山北坡山地草原群落特征的影响[J].新疆农业科学,2017,54(6):1145-1151,7.基金项目
the National Natural Science Foundation of China "Hyperspectral Inversion of Chlorophyll Content in Mountain Grassland in Arid Area" (31460625) and the Fund for Basic Research Programs in Nonprofit Scientific Research Institutes of Xinjiang Uygur Autonomous Region "The Influence of Utilization Modes on the Meadow Grassland Plant Diversity"国家自然科学基金项目“干旱区山地草原叶绿素含量高光谱反演研究”(31460625)和自治区公益性基本科研业务费项目“利用方式对山地草甸植物多样性的影响” （31460625）
