| 乌兰布和沙漠地区不同沙生灌木的耐盐性综合评价 |
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| 引用本文： | 李清河,王赛宵,徐军,任文佼,赵英铭.乌兰布和沙漠地区不同沙生灌木的耐盐性综合评价[J].草业科学,2012,29(7):1132-1136. |
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| 作者姓名： | 李清河 王赛宵 徐军 任文佼 赵英铭 |
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| 作者单位： | 中国林业科学研究院林业研究所国家林业局林木培育重点实验室,北京100091 林木遗传育种国家重点实验室,北京100091;中国林业科学研究院沙漠林业实验中心,内蒙古磴口,015200 |
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| 基金项目： | 林业科技成果国家级推广项目，中国林业科学研究院林业研究所重点项目资金 |
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| 摘 要： | 针对乌兰布和沙漠地区生长的唐古特白刺（Nitraria tangutorum）、西伯利亚白刺（N.sibirica）、柠条（Caragana korshinskii）、长叶红砂（Reaumuria trigyna）、沙冬青（Ammopiptanthus mongolicus）、霸王（Zygophyllum xanthoxylon）、柽柳（Tamarix austromongolica）7种沙生灌木，通过盆栽试验的盐分梯度反复干旱法，在测定的一系列形态、生长指标以及光合、水分生理指标的基础上，经过主成分分析的降维分析，采用隶属函数对7种沙生灌木的耐盐性进行了聚类分析，在此基础上运用权重法定量评价了它们的耐盐性。结果表明，地径、气孔导度、水分利用效率、水势、枝条长度、地上干质量、主根系长度、侧根系长度、侧根数、根径可作为沙生灌木耐盐性评价鉴定的指标；7种植物的耐盐性分为强、中、弱三类：第Ⅰ类(强)植物，长叶红砂、柽柳；第Ⅱ类（中）植物，西伯利亚白刺、唐古特白刺；第Ⅲ类（弱）植物，沙冬青、霸王、柠条。同时7种植物的耐盐性由强到弱的顺序为长叶红砂、柽柳、西伯利亚白刺、唐古特白刺、沙冬青、霸王、柠条。
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| 关 键 词： | 沙生灌木 耐盐性 隶属函数 聚类分析 |
Comprehensive evaluation on salt tolerance of different desert shrubs in Ulan Buh Desert regions |
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| LI Qing-he,WANG Sai-xiao,XU Jun,REN Wen-jiao,ZHAO Ying-ming.Comprehensive evaluation on salt tolerance of different desert shrubs in Ulan Buh Desert regions[J].Pratacultural Science,2012,29(7):1132-1136. |
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| Authors: | LI Qing-he WANG Sai-xiao XU Jun REN Wen-jiao ZHAO Ying-ming |
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| Institution: | 1.Research Institute of Forestry,Chinese Academy of Forestry, Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Beijing 100091,China; 2.State Key Laboratory of Tree Genetics and Breeding,Beijing 100091,China; 3.Experimental Center of Desert Forestry,Chinese Academy of Forestry,Dengkou 015200,China) |
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| Abstract: | Based on the principal component analysis,the cluster analysis and the membership function method,a pot experiment was conducted to evaluate quantitatively salt tolerance of the seedlings of Nitraria tangutorum,Nitraria sibirica,Zygophyllum xanthoxylon,Ammopiptanthus mongolicus,Caragana korshinskii,Reaumuria trigyna and Tamarix austromongolica growing in the Ulan Buh Desert by measuring many morphological and physiological indices.This study proposed that the ground diameter,stomatal conductance,water use efficiency,water potential,branch length,above dry weight,main root length,lateral root length,lateral root number and root diameter were considered as the important indicators of salt-tolerance evaluation for the hese desert shrubs.Seven shrubs were divided into strong,medium and weak salt tolerance,in which the R.trigyna and the T.austromongolica were strong,and the N.sibirica and N.tangutorum was medium,and the others were weak.The salt tolerance of seven desert shrubs was in order as R.trigyna>T.austromongolica>N.sibirica>N.tangutorum>A.mongolicus>Z.xanthoxylon>C.korshinskii. |
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| Keywords: | desert shrub salt tolerance membership function cluster analysis |
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