| 北京山区典型森林生态系统土壤水文特征研究 |
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| 引用本文： | 张艺,史宇,余新晓,常存,邓文平,王贺年.北京山区典型森林生态系统土壤水文特征研究[J].水土保持通报,2012,32(3):62-67. |
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| 作者姓名： | 张艺 史宇 余新晓 常存 邓文平 王贺年 |
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| 作者单位： | 1. 北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,100083
2. 中国环境监测总站,北京,100101 |
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| 基金项目： | “十二五”国家科技支撑计划“三北地区水源涵养林体系构建技术研究与示范”(2011BAD38B05) |
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| 摘 要： | 对北京山区4种典型森林生态系统的土壤水文特征进行了研究。结果表明,除侧柏外,研究区各林分土壤容重都随土层深度增加而增加,土壤总孔隙度和毛管空隙度都随土层深度增加而减小,而非毛管空隙度变化没有普遍规律性。不同林分各层次土壤水势都随土壤含水率的增加而降低,100kPa为土壤水分特征曲线的临界值。土壤入渗的瞬变阶段发生在0～5min,渐变阶段发生在5～60min,稳定阶段发生在60min以后,针叶林的土壤渗透能力要明显高于阔叶林。用双环入渗法得出的土壤入渗过程用蒋定生公式拟合的效果最佳。
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| 关 键 词： | 土壤水文特征 土壤水分特征曲线 土壤入渗 |
| 收稿时间： | 2011/7/26 0:00:00 |
| 修稿时间： | 2011/9/10 0:00:00 |
Soil Hydrological Characteristics of Typical Forest Ecosystems in Beijing Mountainous Area |
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| ZHANG Yi,SHI Yu,YU Xin-xiao,CHANG Cun,DENG Wen-ping and WANG He-nian.Soil Hydrological Characteristics of Typical Forest Ecosystems in Beijing Mountainous Area[J].Bulletin of Soil and Water Conservation,2012,32(3):62-67. |
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| Authors: | ZHANG Yi SHI Yu YU Xin-xiao CHANG Cun DENG Wen-ping and WANG He-nian |
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| Institution: | 1(1.Key Laboratory of Soil and Water Conservation & Combating Desertification of the Ministry of Education, Beijing Forestry University,Beijing 100083,China;2.Environmental Monitoring Station of China,Beijing 100101,China) |
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| Abstract: | Soil hydrological characteristics were studied for four typical forest ecosystems located in Beijing mountainous area.Results showed that soil bulk density increased with the increase in soil depth,while total soil porosity and capillary porosity decreased.There was no regular trend for non-capillary porosity.Soil water potential at all levels increased with soil water content for all forest stands and 100 kPa was found to be the cutoff value of the characteristic curve of soil water.The transient phase of infiltration occurred in the first five minutes,the gradual phrase occurred between the fifth minute and the sixtieth minute,and the stable phrase occurred after 60 minutes.Infiltration capacity of coniferous forest soil was significantly higher than that of broad-leaved forest.Jiang Dingsheng formula best fitted the infiltration process determined by double-ring method. |
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| Keywords: | soil hydrological characteristic soil water characteristic curve infiltration of soil |
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