| 亚热带红壤区湿地松边材液流的尺度扩展及其对环境因子的响应 |
| |
| 引用本文： | 涂洁,刘琪璟.亚热带红壤区湿地松边材液流的尺度扩展及其对环境因子的响应[J].水土保持学报,2007,21(2):197-200. |
| |
| 作者姓名： | 涂洁 刘琪璟 |
| |
| 作者单位： | 1. 南昌大学,环境科学与工程学院,教育部鄱阳湖湖泊生态与生物资源利用实验室,江西,南昌,330029;南昌工程学院,江西,南昌,330029
2. 南昌大学,环境科学与工程学院,教育部鄱阳湖湖泊生态与生物资源利用实验室,江西,南昌,330029;中国科学院,地理科学与资源研究所,北京,100101 |
| |
| 基金项目： | 国家重点基础研究发展计划(973计划);中国科学院生态网络野外台站基金 |
| |
| 摘 要： | 运用TDP液流计对湿地松树干液流密度进行长期连续测定，并用传感器同步记录环境因子的变化。湿地松边材面积与胸径之间的关系可以用二次函数很好地拟合。对湿地松生长旺季、非生长旺季以及全年液流观测结果与边材面积进行回归分析，日累计液流量与边材面积间均呈极显著的线性相关关系，所有方程的相关系数都在0．95以上。单位边材面积日累计液流量与冠层温度、冠层相对湿度、光合有效辐射均呈极显著的线性相关。建立了单位边材面积日累计液流量与冠层温度、冠层相对湿度、光合有效辐射的多元线性回归方程，各变量相关程度大小顺序为光合有效辐射〉冠层相对湿度〉冠层温度。
|
| 关 键 词： | 湿地松 热扩散式探针 林分耗水 尺度扩展 |
| 文章编号： | 1009-2242（2007）02-0197-04 |
| 收稿时间： | 2006-09-17 |
| 修稿时间： | 2006-09-17 |
Sap Flow Scaling-Up of Artificial Pinus elliottii Forests in Subtropical Red Earth Area and Its Response to Environmental Factors |
| |
| TU Jie,LIU Qi-Jing.Sap Flow Scaling-Up of Artificial Pinus elliottii Forests in Subtropical Red Earth Area and Its Response to Environmental Factors[J].Journal of Soil and Water Conservation,2007,21(2):197-200. |
| |
| Authors: | TU Jie LIU Qi-Jing |
| |
| Institution: | 1. Key Lab of Poyang Lake Ecology and Bio-Resource Utilization, Ministry of Education, College of Environmental Science and Engineering, N anchang University, N anchang 330029 ; 2. Nanchang Institute of Technology, Nanchang 330029 ; 3. Institute of Geographical Science and Natural Resources Research, Chinese Academy of Science, Beijing 100101 |
| |
| Abstract: | By using thermal dissipation probe,sap flow of Pinus elliottii was measured with the circumstance factors recorded by radiation,temperature and humidity sensors.There was a high correlation between sapwood area of P.elliottii and diameter at breast height by quadratic function.Regressional analysis on the sap flow of P.elliottii in different growing periods and sapwood area showed that daily cumulative sap flow correlated linearly with sapwood area with all correlation factors higher than 0.95.Significant correlations also existed between daily cumulative sap flow per sapwood(qs)and three separate ambient environmental factors including canopy temperature(CT),canopy relative humidity(CRH) and photosynthetically active radiation(PAR).Multiple linear models of qs and environmental factors were developed at significant level,of which the sequence of correlated degrees was as follows: CRH>PAR>CT. |
| |
| Keywords: | Pinus elliottii thermal dissipation probe(TDP) stand water consumption scaling-up |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《水土保持学报》浏览原始摘要信息 |
| 点击此处可从《水土保持学报》下载免费的PDF全文 |
|
