| 北京密云水库集水区板栗林水化学元素性质研究 |
| |
| 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. |
| |
| 作者姓名： | 刘世海 余新晓 于志民 |
| |
| 作者单位： | 1. 北京林业大学水土保持学院，北京，100083
2. 北京市林业局，100029，北京 |
| |
| 基金项目： | 国家科技攻关项目，中-德合作项目 |
| |
| 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 0 0 11mg 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 17 110 5mg L ,树干茎流为 35 5 0 74mg L ,比大气降水分别高出 5 10 94mg L和 2 3 5 0 6 3mg L .
|
| 关 键 词： | 大气降水 穿透降水 树干茎流 化学元素 |
Properties of water chemical elements of Castanea mollissima forest in Miyun reservoir watershed. |
| |
| Liu Shihai, Yu Xinxiao, Yu Zhimin. College of Soil and Water Conservation,Beijing For. Univ.,P.R.China..Properties of water chemical elements of Castanea mollissima forest in Miyun reservoir watershed.[J].Journal of Beijing Forestry University,2001,23(2):12-15. |
| |
| Authors: | Liu Shihai Yu Xinxiao Yu Zhimin College of Soil and Water Conservation Beijing For Univ PRChina |
| |
| Institution: | Liu Shihai, Yu Xinxiao, Yu Zhimin. College of Soil and Water Conservation,Beijing For. Univ.,100083,P.R.China. |
| |
| 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. |
| |
| Keywords: | precipitation through\|fall stem\|flow chemical elements |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
