[1]曹云生,赵艳玲.不同灌木林分枯落物层与土壤层水源涵养能力研究[J].水土保持研究,2019,26(06):179-183.
　CAO Yunsheng,ZHAO Yanling.Study on Water Conservation Capacities of Litter Layer and Soil Layer in Different Shrub Forests[J].Research of Soil and Water Conservation,2019,26(06):179-183.
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不同灌木林分枯落物层与土壤层水源涵养能力研究

《水土保持研究》[ISSN:1005-3409/CN:61-1272/P] 卷: 26 期数: 2019年06期 页码: 179-183 栏目: 出版日期: 2019-10-17
Title:
Study on Water Conservation Capacities of Litter Layer and Soil Layer in Different Shrub Forests
作者:
曹云生1,2, 赵艳玲1,3
1. 中国矿业大学(北京) 地球科学与测绘工程学院, 北京 100083;
2. 北京市工程咨询公司, 北京 100083;
3. 中国矿业大学(北京) 土地复垦与生态重建研究所, 北京 100083
Author(s):
CAO Yunsheng1,2, ZHAO Yanling1,3
1. College of Earth Science and Surveying Engineering, China University of Mining and Technology(Beijing), Beijing 100083, China;
2. Beijing Engineering Consulting Company, Beijing 100083, China;
3. Institute of Land Reclamation and Ecological Reconstruction, China University of Mining and Technology(Beijing), Beijing 100083, China
关键词:
灌木; 枯落物层; 土壤层; 水源涵养
Keywords:
shrub; litter layer; soil layer; water conservation
分类号:
S715.3
摘要:
为探究不同灌木林分枯落物层水源涵养能力，选择了3种灌木林分作为研究对象，利用室内浸泡法与双环刀法分别对3种灌木林分枯落物层与土壤层水源涵养相关指标进行了测定。结果表明：（1）枯落物层水源涵养3个重要因子蓄积量、最大持水量与有效拦蓄量由大到小排序是一致的，荆条 > 胡枝子 > 三裂绣线菊。（2）在0.25 h枯落物持水量与持水速率大小排序为荆条 > 胡枝子 > 三裂绣线菊，枯落物层持水量与浸水时间具有较好的函数关系，关系式为Q=alnt+b（R2>0.97），枯落物层持水速率与浸水时间进行函数拟合，具有较好的幂函数关系，表达式为V=Ktn（R2>0.99）。（3）土壤有效持水量大小排序为：荆条 > 三裂绣线菊 > 胡枝子；林分初渗速率、稳渗速率大小排序一致，荆条>三裂绣线菊>胡枝子；林分土壤入渗时间和入渗速率有较好的函数关系，表达式为y=a·xb（R2>0.94）。枯落物层与土壤层水源涵养能力最强的为荆条灌木林分。
Abstract:
In order to explore the water conservation capacity of litter layer in different shrub forests, three shrub stands were selected as research samples. The indoor soaking method and double-ring knife method were used to measure the relevant indicators of the water conservation of the litter layers and soil layers of three shrubs. The results showed that:(1) the three important factors, accumulation the maximum water holding capacity and the effective storage capacity of the litter layer, decreased in the order:Vitex negundo L. var. heterophylla > Lespedeza bicolor > Spiraea trifida; (2) the water holding capacity and water holding rate of 0.25 h decrease in the order:Vitex negundo L. var. heterophylla > Lespedeza bicolor > Spiraea trifida, and the water holding capacity of the litter layer has the function relationship with the water immersion time, the function is expressed as Q=alnt+b (R2>0.97), the relation between the water holding rate of the litter layer and the water immersion time can be described by the power function which is expressed as V=Ktn (R2>0.99); (3) the soil effective water holding capacity decreases in the order:Vitex negundo L. var. heterophylla > Spiraea trifida > Lespedeza bicolor; the initial infiltration rate and steady infiltration rate of forest stands decrease in the sequence:Vitex negundo L. var. heterophylla > Spiraea trifida > Lespedeza bicolor; there is a good functional relationship between infiltration time and infiltration rate of soil in the stands, and the relationship is expressed as:y=a·xb (R2>0.94). The most abundant water source conservation abilities of the litter layer and the soil layer are observed in the Vitex negundo L. var. heterophylla shrub forest.

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备注/Memo

收稿日期:2019-01-15;改回日期:2019-02-20。
基金项目:国家自然基金"基于森林空间结构的华北落叶松人工林种子萌发及幼苗成活机制研究"（31500523）
作者简介:曹云生(1985-),男,山东淄博人,博士,研究方向为生态环境工程与植被恢复技术。E-mail:cys888cys888@163.com
通讯作者:赵艳玲(1976-),女,河北献县人,博士,教授,主要从事土地复垦与生态重建及3S技术应用研究。E-mail:zhaoyl7677@163.com

更新日期/Last Update: 1900-01-01