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| 黄土高原半干旱区刺槐生长盛期树干液流动态 | |
| 引用本文： | 吴芳,陈云明,于占辉.黄土高原半干旱区刺槐生长盛期树干液流动态[J].植物生态学报,2010,34(4):469-476. |
| 作者姓名： | 吴芳 陈云明 于占辉 |
| 作者单位： | 西北农林科技大学资源环境学院, 陕西杨凌 712100; 中国科学院水土保持研究所, 陕西杨凌 712100; 东北电力设计院, 长春 130000 |
| 基金项目： | 国家科技支撑计划课题，中国科学院知识创新工程"百人计划"项目，中国科学院西部行动计划项目 |
| 摘 要： | 通过研究树干液流速率与气象因子的关系,可以定量地分析树木生长与群落蒸腾耗水的相互关系,揭示黄土高原半干旱区刺槐水分利用动态及其适应环境因子的内在机理,为当地生态环境建设提供理论依据。应用热扩散式树干茎流计(TDP)于2008年7月1日至7月26日,在黄土高原半干旱区安塞县对刺槐(Robinia pseudoacacia)人工林生长盛期树干液流速率进行了连续测定,并对周围气象、土壤水分等指标进行了同步测定。刺槐生长盛期树干液流速率晴天日变化呈宽峰形曲线,在测量时期液流速率日平均值为0.00133cm·s–1;刺槐树干单位边材面积的液流速率与光合有效辐射、大气温度、水汽压差呈极显著正相关关系,与相对湿度呈负相关关系。其相关程度绝对值顺序为光合有效辐射大气温度水汽压差相对湿度风速;刺槐边材面积与胸径之间存在着显著的线性相关关系,相关系数为0.878,单位边材面积的液流速率随树干胸径的增大而减小。 |
| 关 键 词： | 气象因子 黄土高原 刺槐 树干液流 热扩散式探针 |
| 收稿时间： | 2009-04-20 |
| 修稿时间： | 2009-12-14 |
Growing season sap-flow dynamics of Robinia pseudoacacia plantation in the semi-arid region of Loess Plateau, China |
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| WU Fang,CHEN Yun-Ming,, YU Zhan-Hui College of Resources , Environment,Northwest A&F University,Yangling,Shaanxi ,China.Growing season sap-flow dynamics of Robinia pseudoacacia plantation in the semi-arid region of Loess Plateau, China[J].Acta Phytoecologica Sinica,2010,34(4):469-476. | |
| Authors: | WU Fang CHEN Yun-Ming YU Zhan-Hui College of Resources Environment Northwest A&F University Yangling Shaanxi China |
| Institution: | College of Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation of ChineseAcademy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; and Northeast Electric Power Design Institute, Changchun, 130000,China |
| Abstract: | Aim We studied the relationship between sap-flow velocity and meteorological factors to quantitatively correlate tree growth and transpirational water-consumption, determine the dynamic change of water use of Robinia pseudoacacia in a semi-arid region, reveal its mechanism to adapt to environmental factors and provide the theo-retical basis for local ecological reconstruction of the environment. Methods A thermal dissipation probe (TDP) was used to measure the sap-flow dynamics of R. pseudoacacia in Ansai C... |
| Keywords: | climatic factors Loess Plateau Robinia pseudoacacia sap flow thermal dissipation probe |
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