| 璧山县生态恢复过程中水土保持林主要乔木树种生态位特征研究 |
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| 引用本文： | 邓嘉农,黄茹,何丙辉,齐代华.璧山县生态恢复过程中水土保持林主要乔木树种生态位特征研究[J].西南农业大学学报,2011,33(7). |
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| 作者姓名： | 邓嘉农 黄茹 何丙辉 齐代华 |
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| 作者单位： | 长江流域水土保持监测中心站;西南大学资源环境学院三峡库区生态环境教育部重点实验室;西南大学生命科学学院; |
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| 基金项目： | 国家自然科学基金资助项目(40971166); 重庆市科技攻关重点资助项目(CSTC2009AB1115) |
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| 摘 要： | 采用样方法对不同资源位群落进行调查,利用生态位宽度、生态位相似性比例和生态位重叠公式研究了璧山县水土保持修复工程项目区内11个优势种群的生态位的变化.结果表明:漆树、白栎、马尾松、杉木的生态位宽度(Ba)较大,其生态位宽度(Ba)分别为0.574,0.464,0.439,0.306;而黄杞、川杨桐和小叶栲的生态位宽度较小,其Ba分别为0.027,0.104,0.111.生态位宽度大的树种间一般具有较高的生态位相似性比例,如漆树和白栎、漆树和马尾松、白栎和毛叶木姜子;目前,该区处于次生林退化过程中,生态位宽度较大(或者较小)的物种,它们构成的种对间的重叠值并不一致,可见生态位宽度与重叠程度并不完全是相关的,也表明植物对环境资源存在竞争和空间异质性.
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| 关 键 词： | 水土保持林 生态位宽度 生态位重叠 生态恢复 |
Niche Characteristics of Main Tree Species in the Soil and Water Conservation Forests During Ecological Restoration in Bishan County,Chongqing |
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| DENG Jia-nong,HUANG Ru,HE Bing-hui,QI Dai-hua .Changjiang Soil Conservation Monitoring Station,Wuhan ,China,.School of Resources , Environment,Key Laboratory of Eco-environments in Three Gorge Reservoir Region,Chongqing ,.School of Life Science,Southwest University.Niche Characteristics of Main Tree Species in the Soil and Water Conservation Forests During Ecological Restoration in Bishan County,Chongqing[J].Journal of Southwest Agricultural University,2011,33(7). |
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| Authors: | DENG Jia-nong HUANG Ru HE Bing-hui QI Dai-hua Changjiang Soil Conservation Monitoring Station Wuhan China School of Resources Environment Key Laboratory of Eco-environments in Three Gorge Reservoir Region Chongqing School of Life Science Southwest University |
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| Institution: | DENG Jia-nong1,HUANG Ru2,HE Bing-hui2,QI Dai-hua3 1.Changjiang Soil Conservation Monitoring Station,Wuhan 430010,China,2.School of Resources and Environment,Key Laboratory of Eco-environments in Three Gorge Reservoir Region,Chongqing 400715,3.School of Life Science,Southwest University |
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| Abstract: | Niche breadth,similarity and overlap of 11 dominant arbor populations in the area of the soil and water conservation and restoration project in Bishan County were studied with the quadrat sampling method.The results showed that Rhus verniciflua,Quercus fabr,Pinus massoniana and Cunninghamia lanceolata had large niche of breadth,with a breath value(Ba) of 0.574,0.464,0.439 and 0.306,respectively;and Adinandra bockiana,Engelhardia roxburghiana and Symplocos satchuenesiss had a small niche of breadth,their Ba ... |
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| Keywords: | soil and water conservation forest niche breadth niche overlap ecological restoration |
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