| 北京密云油松人工林对降水及其营养元素含量的影响 |
| |
| 引用本文： | 肖洋,陈丽华,余新晓,杨新兵,孙庆艳.北京密云油松人工林对降水及其营养元素含量的影响[J].水土保持通报,2007,27(5):22-27. |
| |
| 作者姓名： | 肖洋 陈丽华 余新晓 杨新兵 孙庆艳 |
| |
| 作者单位： | 北京林业大学,水土保持学院,北京林业大学教育部水土保持重点实验室,北京,100083 |
| |
| 基金项目： | 北京市科委科研项目;国家科技支撑计划 |
| |
| 摘 要： | 对北京密云水库库西油松人工林的林冠截留、穿透降水和树干茎流的观测和分析结果表明，单次降雨过程中的林冠截留量与林外降水量呈幂函数关系，而穿透雨量和树干茎流量跟林外降水量皆呈线性相关关系，它们占林外降水的比例分别为7．23％～87．39％，12．56％～91．58％和0．007％～1．77％。环境状况、气象条件和降水特性的不同是造成同一地区大气降水化学性质差异的主要原因；降水透过油松林冠层后，穿透降水和树干茎流中元素含量都有不同程度的增加。穿透降水中各元素含量变化均与降水时间间隔呈正相关，而与降雨强度和降水量呈负相关；除N外，树干茎流中P，K元素含量与降水特性的关系与穿透降水的相同。
|
| 关 键 词： | 油松 林冠截留 穿透降水 树干茎流 |
| 文章编号： | 1000-288X（2007）05-0022-06 |
| 收稿时间： | 2007/1/23 0:00:00 |
| 修稿时间： | 2007-01-23 |
Influence of Pinus Tabuleaefomis Forest on precipitation and Its Nutrient Content in Miyun Reservoir of Beijing City |
| |
| XIAO Yang,CHEN Li-hu,YU Xin-xiao,YANG Xin-bing and SUN Qing-yang.Influence of Pinus Tabuleaefomis Forest on precipitation and Its Nutrient Content in Miyun Reservoir of Beijing City[J].Bulletin of Soil and Water Conservation,2007,27(5):22-27. |
| |
| Authors: | XIAO Yang CHEN Li-hu YU Xin-xiao YANG Xin-bing and SUN Qing-yang |
| |
| Institution: | College of Soil and Water Conservation, Key Laboratory of Soil and Water Conservation and Combating Deserti f ication of Ministry of Education, Beij ing Forestry University, Beijing 100083, China |
| |
| Abstract: | A Pinus tabulaeforrnis plantation in western Miyun Reservoir of Beijing city was observed and analyzed to study canopy interception, throughfall, and stemflow. Results showed that the relationship between the amounts of canopy interception and precipitation was the power function, but the relationship among throughfall, stemflow and precipitation displayed a linear correlation. Contributions of canopy interception, throughfall, and stemflow to total flux of rainfall were 7.23%-87.39%, 12.56%-91.58% and 0. 007%- 1.77%, respectively. The differences of environmental aspect, meteorological condition, and characteristics of rainfall were a major factor which caused the discrepancy of atmospheric precipitation chemistry in the same area. When the precipitation passed through the canopy, the content of chemical elements in throughfall and stemflow increased in comparision with that of the precipitation. There was a positive correlation between the individual element content in throughfall and the interval of precipitation, but a negative correlation with rainfall intensity and its amount. The correlation between the phosphorus and potassium contents in stemflow and characteristics of precipitation was the same as throughfall except for nitrogen element. |
| |
| Keywords: | Pinus tabulaeformis canopy interception throughfall stemflow |
| 本文献已被 维普 万方数据 等数据库收录！ |
| 点击此处可从《水土保持通报》浏览原始摘要信息 |
| 点击此处可从《水土保持通报》下载免费的PDF全文 |
|
