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当前位置: 首页 > 文章 > 微域尺度苏打碱土的特征与植被的分布规律 水土保持通报 2008,28 (3) 28-33
Position: Home > Articles > Characteristics of Sodic Alkaline Soil and Distribution of Vegetation in Micro Scale Bulletin of Soil and Water Conservation 2008,28 (3) 28-33

微域尺度苏打碱土的特征与植被的分布规律

作  者：
罗金明;邓伟;张晓平;杨帆;易富科
单  位：
中国科学院东北地理与农业生态研究所;中国科学院水利部成都山地灾害研究所
关键词：
苏打碱土;微域格局;盐生植被
摘  要：
探讨了微域尺度(32 m长的横剖面)苏打碱土的特征以及植被分布规律。结果表明,沿洼地向高平地土壤表现为盐化草甸土—浅位柱状苏打碱土—白盖苏打碱土—中位柱状苏打碱土的分布格局。植被为圆叶碱毛茛/萹蓄蓼群落、鹅绒委陵菜群落、羊草/寸草苔群落、裸地以及羊草/星星草/虎尾草群落,其中委陵菜/萹蓄蓼群落、羊草/苔草群落沿洼地呈环状分布,裸地以及碱茅/虎尾草/羊草群落呈斑状分布。洼地边缘的植被具有最高的物种丰富度和覆盖度,生物量也最高;高平地的植被矮小,生物量较少。裸地的盐分含量较高(可达3.38%),土体紧实,限制了植被生长。
译  名：
Characteristics of Sodic Alkaline Soil and Distribution of Vegetation in Micro Scale
作  者：
LUO Jin-ming1,DENG Wei2,ZHANG Xiao-ping1,YANG Fan1,YI Fu-ke1 (1.Northeast Institution of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun,Jilin 130012,China;2.Institute of Mountain Hazards and Environment,Chinese Academy of Sciences,Chengdu,Sichuan 610041,China;3.Graduate School of the Chinese Academy of Sciences,Beijing 100039,China)
关键词：
alkaline soil;micro scale pattern;saline vegetation
摘  要：
Characteristics of soil profile and vegetation distribution pattern in micro scale(a 32 m long transect) in sodic alkaline soil region were discussed.Results showed that soil distribution patterns along the transect from low land up to upland were sodic saline meadow soil,shallow columnar sodic alkaline soil,white crust sodic alkaline soil,and mid columnar sodic alkaline soil.Vegetation included Ranunculus cymbalaria Pursh /Polygonum aviculare L community,Potentilla anserina L community,Carex duriuscula C.A.Mey/Leymus chinensis Tzvel community,bare land,and Leymus chinensis Tzvel/Puccinellia tenuiflora Scrib.Et Merr./Chloris virgata Swarta community.The Ranunculus cymbalaria Pursh /Polygonum aviculare L community and Carex duriuscula C.A.Mey/Leymus chinensis Tzvel community were distributed around the shallow basin in ring-like pattern;bare land and Leymus chinensis Tzvel/ Puccinellia tenuiflora Scrib.Et Merr./Chloris virgata Swarta community were distributed in patch pattern.Bio-diversity and coverage of vegetation along the margin of shallow basin were maximal and its biomass was highest.Vegetation in micro flat upland was dwarf and with lower biomass.The salinity in bare land could reach as high as 3.38% and soil structure was extremely compacted.Therefore,the production of vegetation was restrained.

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