| 柴达木盆地几种荒漠灌丛植被的生物量分配格局 |
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| 引用本文： | 钟泽兵,周国英,杨路存,刘何春,宋文珠.柴达木盆地几种荒漠灌丛植被的生物量分配格局[J].中国沙漠,2014,34(4):1042-1048. |
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| 作者姓名： | 钟泽兵 周国英 杨路存 刘何春 宋文珠 |
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| 作者单位： | 1. 中国科学院西北高原生物研究所, 青海 西宁 810001;2. 中国科学院大学, 北京 100049 |
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| 基金项目： | 国家重点基础研究发展计划项目(2012CB026105);中国科学院战略性先导科技专项(XDA0505030304)资助 |
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| 摘 要： | 选择柴达木盆地的8种荒漠灌丛为研究对象，利用样方收获法对生物量及其分配格局进行了研究。结果表明：柴达木盆地荒漠灌丛生物量的空间分布具有高度异质性，介于11.11~58.63 t·hm-2，平均为27.15 t·hm-2。灌木层生物量是整个荒漠生态系统最重要的生物量组分，占总生物量的92.71%。灌木层地上生物量的变幅为7.93~46.10 t·hm-2，地下生物量的变幅为1.15~25.64 t·hm-2。地上生物量远大于地下生物量，根冠比介于0.07~2.45。几种荒漠植被的生物量在各个器官间分配格局为：枝生物量>根生物量>叶生物量，分别占建群种生物量的比例为38.05%、34.92%、27.03%。影响柴达木生物量及其分配的因子主要是灌木的高度及土壤含水量。
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| 关 键 词： | 柴达木盆地 荒漠植被 生物量 分配格局 |
| 收稿时间： | 2013-05-16; |
| 修稿时间： | 2013-07-09 |
The Biomass Allocation Patterns of Desert Shrub Vegetation in the Qaidam Basin,Qinghai, China |
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| Zhong Zebing,Zhou Guoying,Yang Lucun,Liu Hechun,Song Wenzhu.The Biomass Allocation Patterns of Desert Shrub Vegetation in the Qaidam Basin,Qinghai, China[J].Journal of Desert Research,2014,34(4):1042-1048. |
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| Authors: | Zhong Zebing Zhou Guoying Yang Lucun Liu Hechun Song Wenzhu |
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| Institution: | 1. Northwest Institute of Plateau Biology, Chinese Academy of Sciences, Xining 810001, China;2. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | Investigation of spatial distribution of biomass of shrub in desert and desertified regions is essential to evaluate carbon storage in desert ecosystem. In this paper, spatial patterns of desert shrub biomass were studied based on data from sites in the Qaidam Basin, by using quadrat harvest method. We found that spatial distribution of desert shrub biomass is highly spatial heterogeneous in desert regions of the basin, which ranges from 11.11 t·5hm-2 to 58.36 t·5hm-2, with an average of 27.15 t·5hm-2. The shrub layer biomass is the most important component of the total biomass in the terrestrial ecosystem, which accounts for 92.91% of the total biomass. The aboveground biomass is much larger than the belowground biomass, the aboveground biomass is 7.93-46.10 t·5hm-2, and the belowground biomass is 1.15-25.46 t·5hm-2, and the ratio of root to shoot ranges from 0.07 to 2.45. The vegetation biomass in desert varies in different organs, generally speaking, the biomass in branch and stem were larger than in root, and the biomass in foliage is the smallest (38.05%, 34.92%, 27.03%, respectively). The main factors that affect the vegetation biomass and its allocation are shrub height and soil moisture. |
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| Keywords: | desert vegetation biomass spatial distribution Qaidam Basin |
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