自然资源学报 ›› 2001, Vol. 16 ›› Issue (4): 381-385.doi: 10.11849/zrzyxb.2001.04.013

• 论文 • 上一篇    下一篇

黄土高原人工油松林枯枝落叶截留动态研究

赵鸿雁, 吴钦孝, 从怀军   

  1. 中国科学院、水利部水土保持研究所, 陕西杨凌 712100
  • 收稿日期:2000-11-01 修回日期:2001-03-07 出版日期:2001-08-25 发布日期:2001-08-25
  • 作者简介:赵鸿雁(1962-),男,甘肃秦安人,副研究员,博士,从事森林水文和水土保持生态环境效应研究。
  • 基金资助:

    国家“九五”攻关项目(96-004-01-01)资助

A study on interception processes of artificial Chinese pine forest litter on the Loess Plateau

ZHAO Hong yan, WU Qin xiao, CONG Huai jun   

  1. Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling 712100, China
  • Received:2000-11-01 Revised:2001-03-07 Online:2001-08-25 Published:2001-08-25

摘要: 用定位观测的方法研究了人工油松林枯枝落叶的截流量及其截留的动态过程。结果表明,黄土高原人工油松林枯枝落叶的截流量年均为49.3mm,截留率为12.5%。枯枝落叶截留的动态过程受大气降水和环境因子的影响较大,也与其自身湿润程度有关。在次降水过程中,其截留的过程是当降水开始时,截留量增加迅速;降水持续到一定时间后,截流量的增量变小,达到最大值后,截流量在此处上下增减。枯枝落叶截留的动态过程可用直线和正弦函数的组合描述,且该函数能揭示枯枝落叶截留的生物学特性和环境因素对其过程的影响。该模型在计算森林水文及其水土保持效应评价中有广泛的应用前景。

关键词: 黄土高原, 人工油松林, 枯枝落叶, 截留, 动态过程

Abstract: Interception amount and intercepting processes of artificial Chinese pine litter were studied by local measure methods.The results showed the interception amount of litter and its interception rate were 49.3mm and 12.5% respectively.The interception processes of litter were affected by rainfall and environmental factors and also related with litter dry conditions.Interception processes of litter increased quickly when rainfall began,the increasing of amount interception varied slightly when rainfall went on to a certain period of time,after rainfall reached the peak value,the interception amount fluctuated at this point.The interception processes can be described using combination of line and sin function and the sin function can deal with the effects of biology and environment on litter absorption processes.The model has extensive utilization in forest hydrology and soil and water conservation evaluation.

Key words: Loess Plateau, artificial Chinese pine forest, litter interception, dynamic processes

中图分类号: 

  • S715.3