| 北京密云水库集水区板栗林水化学元素性质研究 |
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| 引用本文： | 刘世海,余新晓,于志民.北京密云水库集水区板栗林水化学元素性质研究[J].北京林业大学学报,2001,23(2):12-15. |
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| 作者姓名： | 刘世海 余新晓 于志民 |
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| 作者单位： | 刘世海（北京林业大学水土保持学院，北京，100083）;余新晓（北京林业大学水土保持学院，北京，100083）;于志民（北京市林业局，100029，北京） |
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| 基金项目： | “九五”国家攻关子专题“华北土石山区水源保护林综合配套技术与示范”（96-007-01-02）、中德合作密云监评项目的部分内容 |
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| 摘 要： | 对北京密云水库集水区板栗林水化学性质研究表明在研究期间，不同月份大气降水化学元素的含量变化范围较大，以加权平均值之和来计，6月份化学元素含量最高，观测时段内所测定元素加权平均值之和为12.0011mg/L，各元素含量按大小排序为Ca＞N＞K＞Mg＞Na＞P＞Fe ＞Zn＞Cu＞Mn；大气降水经过林层后，林内穿透降水和树干茎流中各化学元素含量变化基本一致，大多数元素含量增加，林内穿透降水化学元素含量之和为17.1105mg/L，树干茎流为35.5074mg/L，比大气降水分别高出5.1094mg/L和23.5063mg/L.
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| 关 键 词： | 大气降水，穿透降水，树干茎流，化学元素 |
| 修稿时间： | 2000年10月30 |
Properties of water chemical elements of Castanea mollissima forest in Miyun reservoir watershed |
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| Liu Shihai.Properties of water chemical elements of Castanea mollissima forest in Miyun reservoir watershed[J].Journal of Beijing Forestry University,2001,23(2):12-15. |
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| Authors: | Liu Shihai |
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| Abstract: | The paper studies on the water chemical elements of Castanea mollissima forest in the Miyun reservoir watershed, Beijing. The total concentration of chemical elements in precipitation was 12 001?1?mg/L, and it greatly varied in the main rainfall periods. The sequence of the water chemical elements contentration in precipitation was Ca>N>K>Mg>Na>P>Fe>Zn>Cu>Mn. The chemical elements of through\|fall and stem\|flow varied in same way, most of the chemical elements concentration were increased. Through\|fall and stem\|flow total chemical element concentration was 20 613?5?mg/L and 73 323?5?mg/L,respectively, they increased 8 162?4?mg/L and 62 312?4?mg/L than those in precipitation, respectively. |
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| Keywords: | precipitation through\|fall stem\|flow chemical elements |
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