引用本文:
【打印本页】   【HTML】   【下载PDF全文】   查看/发表评论  【EndNote】   【RefMan】   【BibTex】
←前一篇|后一篇→ 过刊浏览    高级检索
本文已被:浏览 75次   下载 53 本文二维码信息
码上扫一扫!
分享到: 微信 更多
不同经营措施对天然次生林枯落物层水源涵养能力的影响
曹云生1,2, 赵艳玲1,3, 梁文俊4
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;4.山西农业大学, 山西 太谷 030800
摘要:
[目的]探究不同经营措施对天然次生林枯落物层水源涵养能力的影响,确定最有利于提高枯落物层的水源涵养能力经营措施,为该地区天然次生林的健康经营提供理论依据和参考。[方法]通过采取现场测量与室内浸泡法测定枯落物层蓄水指标的变化来分析5种经营措施的作用,并设置未采取经营措施的样地作为对照,对林分的各项水源涵养指标进行评价。[结果]①经过改造措施后枯落物蓄积量均高于未改造的林分,改造4 a后枯落物蓄积量与改造之前相比增长27%~39%。②实施经营措施后2 a枯落物层最大持水量增长率为4.61%~9.30%,改造后2 a~4 a增长率为6.31%~7.66%。③改造后2 a与改造后4 a,枯落物自然持水量排序均为:引入灌木 > 封山育林 > 团状择伐 > 带状皆伐 > 抚育间伐 > 未改造,改造2 a后增长率在0.61%~29.68%之间,改造4 a后增长率在1.82%~31.91%之间。④经过改造,枯落物层有效拦蓄量2 a后增长率为3.67%~8.08%;改造后2 a~4 a增长率为4.51%~5.95%。[结论]实施经营措施的林分枯落物层蓄水指标均高于未改造林分,其中引入灌木的经营措施对林分枯落物蓄水能力的影响最明显。
关键词:  经营措施  天然次生林  枯落物  水源涵养
DOI:10.13961/j.cnki.stbctb.2019.03.031
分类号:S727.21
基金项目:国家自然科学基金项目“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)
Effects of Different Management Measures on Water Conservation Capacity of Litter Layer of Natural Secondary Forest
Cao Yunsheng1,2, Zhao Yanling1,3, Liang Wenjun4
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;4.Shanxi Agricultural University, Taigu, Shanxi 030800, China
Abstract:
[Objective] The effects of different management measures on water conservation capacity of litter layer of natural secondary forest were studied, and the management measures that are most conducive to improving the water source conservation capacity of litter layer are determined in order to provide theoretical basis and reference for the healthy management of natural secondary forest in this area.[Methods] Field measurement and indoor immersion method were used to analyze the change of water storage index in the litter layer, and to analyze the effects of five different kinds of management measures. The plots without management measures were set as the control, the water conservation of the stand was adopted, and the water conservation indicators were evaluated.[Results] ① After the transformation measures, the accumulation of litter was higher than that of the unmodified stands, and the amount of litter accumulated after 4 years was increased by 27%~39% compared with that before the transformation. ② After the implementation of the management measures, the growth rate of the maximum water holding capacity of the 2 a litter layer was 4.61%~9.30%, and the growth rate of 2 a to 4 a after the transformation was 6.31%~7.66%. ③ After 2-year and 4-yearr transformation, the natural water holding capacity of litter was:introduction of shrubs > closure of hills for afforestation > squash selective cutting > strip clear cutting > tending and thinning > unreconstructed. The growth rate after the 2-year transformation was 0.61%~29.68%, while the growth rate after the 4-year transformation was 1.82%~31.91%. ④ After the transformation, the effective growth rate of the litter layer after 2 years was 3.67%~8.08%, and the growth rate after 2-4 years was 4.51%~5.95%.[Conclusion] The water storage index of the litter layer in the forest with the implementation of management measures was higher than that in the unreformed forest stand. The management measures of shrubs introduced had the most obvious influence on the water storage capacity of litter.
Key words:  management measures  natural secondary forest  litter  water conservation