| 黄河三角洲自然保护区植物与土壤因子关系及生态位分析 |
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| 引用本文： | 马宗文,谢正磊,段晓峰,周鑫,Timothy R.ROSEN,许学工.黄河三角洲自然保护区植物与土壤因子关系及生态位分析[J].北京大学学报(自然科学版),2012,48(5):801-811. |
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| 作者姓名： | 马宗文 谢正磊 段晓峰 周鑫 Timothy R.ROSEN 许学工 |
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| 作者单位： | 北京大学城市与环境学院,地表过程分析与模拟教育部重点实验室,北京100871;中国科学院地理科学与资源研究所,北京10010;School of Renewable Natural Resources, Louisiana State University, Baton Rouge, LA 70803 |
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| 基金项目： | 国家自然科学基金(40830746,41101084)资助 |
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| 摘 要： | 以黄河三角洲自然保护区 36个样地22个植物种的重要值(Ⅳ)为基础,使用双向指示种分析法(TWINSPAN)将其分为6个群落类型:翅碱蓬群落、柽柳-翅碱蓬群落、柽柳-芦苇+碱蓬群落、芦苇群落、旱柳-芦苇群落、人工林群落(刺槐林和白腊林).在群落演替梯度上,土壤pH逐渐增加,土壤盐分呈下降趋势,土壤含水量最大和最小值分别...
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| 关 键 词： | 双向指示种分析 典范对应分析 植物物种多样性 土壤因子 生态位分析 黄河三角洲 |
Plant-Soil Relationship and Plant Niche in the Yellow River Delta National Natural Reserve, China |
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| MA Zongwen,XIE Zhenglei,DUAN Xiaofeng,ZHOU Xin,Timothy R.ROSEN,XU Xuegong.Plant-Soil Relationship and Plant Niche in the Yellow River Delta National Natural Reserve, China[J].Acta Scientiarum Naturalium Universitatis Pekinensis,2012,48(5):801-811. |
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| Authors: | MA Zongwen XIE Zhenglei DUAN Xiaofeng ZHOU Xin Timothy RROSEN XU Xuegong |
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| Institution: | 1,1.Laboratory for Earth Surface Processes(MOE),College of Urban and Environmental Sciences,Peking University,Beijing 100871;2.Institute of Geographic Sciences and Natural Resources Research,Chinese Academy of Science,Beijing 100101;3.School of Renewable Natural Resources,Louisiana State University,Baton Rouge,Louisiana 70803 |
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| Abstract: | Based on 22 species’ Important Value(IV) at 36 sampling sites in the Yellow River Delta National Natural Reserve(YRDNNR),using Two Way Indicator Species Analysis(TWINSPAN) method,this research categorized the plant communities in YRDNNR into 6 groups,Ass.Suaeda salsa,Ass.Tamarix chinensis-Suaeda salsa,Ass.Tamarix chinensis-Phragmites australis + Suaeda heteroptera,Ass.Phragmites australis,Ass.Salix matsudana-Phragmites australis,and plantation community.At the gradient of succession,the soil pH increased gradually,the soil salinity decreased,the soils containing the most and the least moisture appear in the Ass.Phragmites australis and plantation community respectively,the total organic carbon(TOC) and total nitrogen(TN) in the soils increased,and the ratio of carbon to nitrogen decreased.The key soil environmental factors detected by Canonical Corresponding Analysis(CCA) that influenced the distribution of plants in YRDNNR were soil salinity and pH.The plant species diversity had a significant negative correlation with soil salinity,but a positive correlation with soil pH.Investigation of niche using the formulae described by Levins and Pianka at soil pH and salinity gradients showed that the dominant plant species such as Tamarix chinensis,Phragmites australis,Suaeda salsa,had a wide niche breadth;the niche overlaps between species were relatively smaller,indicating that niche differentiated under soil pH and salinity gradients,which was an essential adaptation to the stresses of soil alkalinity and salinity in YRDNNR. |
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| Keywords: | TWINSPAN CCA species diversity soil variables niche analysis Yellow River Delta |
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