| 贝加尔针茅草原主要植物地上生物量分配对放牧梯度的响应 |
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| 引用本文： | 范国艳,张静妮,王琦,杨殿林.贝加尔针茅草原主要植物地上生物量分配对放牧梯度的响应[J].草原与草坪,2011,31(2):79-84. |
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| 作者姓名： | 范国艳 张静妮 王琦 杨殿林 |
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| 作者单位： | 甘肃农业大学草业学院;农业部环境保护科研监测所; |
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| 基金项目： | 国家自然科学基金(30770367); 中国农业科学院院长基金; 中央级公益性科研院所基本科研业务费专项(2009-ZJN-10)资助 |
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| 摘 要： | 通过对放牧梯度下贝加尔针茅草原主要植物不同器官(茎、叶、花或果)的生物量分配格局变化进行探索,结果表明:贝加尔针茅草原主要植物的繁殖分配随牧压梯度增加,表现出明显的规律性,中牧条件下,贝加尔针茅草原植物群落的繁殖分配与优势种羊草等较耐牧植物变化趋势一致,均较轻牧下显著增加,而优良禾草、豆科牧草等均显著减少;重牧条件下,植物群落的繁殖分配与优良禾草、豆科牧草等以及退化标志植物变化趋势一致,均较中牧下显著减少,而较耐牧植物羊草等均显著增加。
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| 关 键 词： | 贝加尔针茅草原 放牧梯度 植物多样性 生物量分配 繁殖分配 |
Response of the aboveground biomass allocation of main species to grazing gradients in Stipa baicalensis grassland |
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| FAN Guo-yan,ZHANG Jing-ni,WANG Qi,YANG Dian-lin.Response of the aboveground biomass allocation of main species to grazing gradients in Stipa baicalensis grassland[J].Grassland and Turf,2011,31(2):79-84. |
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| Authors: | FAN Guo-yan ZHANG Jing-ni WANG Qi YANG Dian-lin |
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| Institution: | FAN Guo-yan1,ZHANG Jing-ni2,WANG Qi1,YANG Dian-lin2(1.College of Pratacultural Science,Gansu Agricultural University,Lanzhou 730070,China,2.Agro-Environmental Protection Institute,Ministry of Agriculture,Tianjin 300191,China) |
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| Abstract: | The aboveground biomass allocation of main species was observed in Stipa baicalensis grassland under grazing gradients.The result showed that reproductive allocation of mainspecieswas showed an obvious patternwith the increase of grazing gradients.Under moderate grazingcondition,the reproductive allocationof plant community increased significantlythan that under light grazingcondition,grasses and legumes were significantly decreased.Under heavy grazing condition,the reproductive allocation decreased signifi... |
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| Keywords: | Stipa baicalensis grassland grazing gradient plant diversity biomass allocation reproductive allocation |
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