| 科尔沁沙地3种灌木凋落物分解速率及其与关键气象因子的关系 |
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| 引用本文： | 曲浩,赵学勇,赵哈林,王少昆,李衍青,刘志国.科尔沁沙地3种灌木凋落物分解速率及其与关键气象因子的关系[J].中国沙漠,2010,30(4):844-849. |
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| 作者姓名： | 曲浩 赵学勇 赵哈林 王少昆 李衍青 刘志国 |
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| 作者单位： | 1. 中国科学院,寒区旱区环境与工程研究所,甘肃,兰州,730000
2. 巴彦淖尔林业研究所,内蒙古,巴彦淖尔,015000 |
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| 基金项目： | 国家重点基础研究发展计划项目，国家自然科学基金，中国科学院方向性项目 |
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| 摘 要： | 选取科尔沁沙地3种代表性灌木(差不嘎蒿、黄柳、小叶锦鸡儿)作为研究对象,采用网袋法对其凋落物进行研究,每月取样测试,结合试验期间当地气象资料,对凋落物在不同类型沙丘、不同深度的分解率进行相关分析。结果表明,生长季节内,放置在地表的凋落物在固定沙丘上的分解率大于其在流动沙丘上的分解率,而在冬春季节却相反;凋落物在地下10cm深处的分解普遍快于地表;经过一年的分解,差不嘎蒿的分解率大于另两种植物,以固定沙丘地表放置为例,其最终分解率为53.6%,大于小叶锦鸡儿的28.5%及黄柳的21%;降水对凋落物的分解影响较地温更大。
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| 关 键 词： | 凋落物 分解 灌木 气象因子 科尔沁沙地 |
| 收稿时间： | 2009-10-07; |
Litter Decomposition Rates of Three Shrub Species in Horqin Sandy Land and Their Relationship with Key Meteorological Factors |
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| QU Hao,ZHAO Xue-yong,ZHAO Ha-lin,WANG Shao-kun,LI Yan-qing,LIU Zhi-guo.Litter Decomposition Rates of Three Shrub Species in Horqin Sandy Land and Their Relationship with Key Meteorological Factors[J].Journal of Desert Research,2010,30(4):844-849. |
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| Authors: | QU Hao ZHAO Xue-yong ZHAO Ha-lin WANG Shao-kun LI Yan-qing LIU Zhi-guo |
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| Institution: | QU Hao1,ZHAO Xue-yong1,ZHAO Ha-lin1,WANG Shao-kun1,LI Yan-qing1,LIU Zhi-guo2(1.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou 730000,China,2.Bayannur Forest Research Institute,Bayannur 015000,Inner Mongolia,China) |
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| Abstract: | Litter decomposition rates of three shrub species (Artemisia halodendron, Salix gordejevii, and Caragana microphylla) in Horqin Sandy Land were investigated. Collected litter was put in nylon bag and then was put on different kinds of sand dunes or was buried deep down in 10 cm, with sampling and weighing it every month. The results showed the decomposition rate of litter put on the fixed sand dunes was higher than the decomposition rate of litter put on the mobile sand dune from May to August, and the situ... |
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| Keywords: | litter decomposition shrub meteorological factors Horqin Sandy Land |
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