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| 陕北典型退耕还林区林下草本物种生态位研究 | |
| 引用本文： | 赵发珠,韩新辉,杨改河,杜约翰,康乐.陕北典型退耕还林区林下草本物种生态位研究[J].西北植物学报,2011,31(10):2090-2099. |
| 作者姓名： | 赵发珠 韩新辉 杨改河 杜约翰 康乐 |
| 作者单位： | 1. 西北农林科技大学林学院,陕西杨陵712100;陕西省循环农业工程技术研究中心,陕西杨陵712100 2. 陕西省循环农业工程技术研究中心,陕西杨陵712100;西北农林科技大学农学院,陕西杨陵712100 3. 西北农林科技大学林学院,陕西杨陵,712100 |
| 基金项目： | 国家自然科学基金资助项目(30971695) |
| 摘 要： | 基于样方法进行不同资源位的群落调查,并用群落物种多样性、生态位宽度、生态位重叠和生态位相似性比例分析了安塞县典型退耕区16种不同退耕模式及年限群落林下草本物种生态位特征。结果表明:乔木林下草本群落物种多样性高于灌木林。生态位宽度以达乌里胡枝子和阿尔泰狗娃花最大,它们的Shannon-Wiener(Bs-w,i)和Levins(Bl,i)指数分别为0.89、0.83和0.64、0.58。生态位宽度较大的种间生态位重叠程度大,如阿尔泰狗娃花、铁杆蒿、长芒草等。生态位宽度与生态位相似比例值并不一致。生态位相似性比例小于0.5的种对有174对,约占种群总对数的91.6%,说明种群对环境需求有较大的差异,各种群能较好地共生于群落中。 |
| 关 键 词： | 退耕还林 群落多样性 生态位宽度 生态位重叠 生态位相似性比例 |
Niche Characteristics of Undergrowth Herbaceous in Typical Reforest Cultivated Land Area in North Shaanxi Province |
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| ZHAO Fa-zhu,HAN Xin-hui,YANG Gai-he,DU Yue-han,KANG Le.Niche Characteristics of Undergrowth Herbaceous in Typical Reforest Cultivated Land Area in North Shaanxi Province[J].Acta Botanica Boreali-Occidentalia Sinica,2011,31(10):2090-2099. | |
| Authors: | ZHAO Fa-zhu HAN Xin-hui YANG Gai-he DU Yue-han KANG Le |
| Institution: | ZHAO Fa-zhu1,2,HAN Xin-hui2,3*,YANG Gai-he2,3,DU Yue-han2,KANG Le1(1 College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China,2 The Research Center of Recycle Agricultural Engineering and Technology of Shaanxi Province,3 College of Agronomy,China) |
| Abstract: | Based on a field plot sampling method to investigate community niche of undergrowth vegetation in typical lands use conversion from agricultural lands into forest lands.Species diversity indices,parameters of niche breadth,niche similarity and niche overlap were calculated to analyze niche characteristics in 16 different models and periods of land use conversion from agricultural lands into forest lands communities in Ansai country.The results showed that the species diversity indices in land use conversion... |
| Keywords: | converting cultivated land into forest species diversity indices parameters of niche breadth niche overlap niche similarity |
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