冀北山区滦平县4种新造林地水源涵养能力研究

Abstract

PDF HTML阅读 XML下载 导出引用 引用提醒 冀北山区滦平县4种新造林地水源涵养能力研究 DOI: 10.5846/stxb201811212530 作者: 作者单位: 北京林业大学水土保持学院,北京林业大学水土保持学院,河北省承德市林业局生态工程项目管理中心,河北省承德市滦平县林业局,北京林业大学水土保持学院 作者简介: 通讯作者: 中图分类号: 基金项目: 京冀合作造林项目生态效益监测评价（2016HXFWSBXY014） Study of water conservation capacity of four new woodlands in the northern Hebei Mountainous Area of Luanping County Author: Affiliation: College of soil and water conservation, Beijing Forestry University,College of soil and water conservation, Beijing Forestry University,,, Fund Project: 摘要 | 图/表 | 访问统计 | 参考文献 | 相似文献 | 引证文献 | 资源附件 | 文章评论 摘要:为研究密云水库上游冀北山区生态水源保护林的生长现状和涵养水源能力，以油松×落叶松（林地Ⅰ）、油松×山杏（林地Ⅱ）、油松×蒙古栎（林地Ⅲ）、侧柏×山杏（林地Ⅳ）4种混交林为研究对象，通过测定林下枯落物层和土壤层特征，分析比较不同林地枯落物和土壤的持水能力及林地水源涵养能力。研究结果表明：枯落物现存量为林地Ⅱ > 林地Ⅳ > 林地Ⅰ > 林地Ⅲ，林地Ⅱ的枯落物层有效持水量最大，为81.30 t/hm2，林地Ⅰ最小。土壤总孔隙度、毛管孔隙度和非毛管孔隙度最大的均为林地Ⅳ，分别为56.02%、50.26%和5.76%，林地Ⅳ的土壤层有效持水量最大，为1507.90 t/hm2，林地Ⅲ最小。综合4种林地的枯落物层和土壤层持水能力，可知林地Ⅳ（侧柏×山杏）的水源涵养能力最强，为157.43 mm，林地Ⅲ（油松×蒙古栎）最弱。 Abstract:To study the growth status and water conservation capacity of water conservation forests in the mountainous areas of northern Hebei in the upper reaches of the Miyun Reservoir, four mixed forests, Pinus tabulaeformis×Larix (woodland I), Pinus tabulaeformis×Apricot (woodland Ⅱ), Pinus tabulaeformis×Quercus mongolica (woodland Ⅲ), and Platycladus orientalis×Apricot (woodland IV), were studied. Through the analysis of the characteristics of the litter layer and soil layer under the forests, the water-holding capacity of the litter and soil and the water conservation capacity of the forest land were analysed and compared. The results showed that the existing litter amount was in the order of woodland Ⅱ > woodland IV > woodland I > woodland Ⅲ. The litter layer of woodland Ⅱ had the largest effective water-holding capacity, which was 81.30 t/hm2, and that of woodland I had the lowest water-holding capacity. Soil total porosity, capillary porosity, and non-capillary porosity were the highest in woodland IV (56.02%, 50.26%, and 5.76%, respectively). The soil layer of woodland IV had the most effective water-holding capacity, which was 1507.90 t/hm2, and that of woodland Ⅲ had the lowest water-holding capacity. Upon determining the water-holding capacities of the litter and soil layers of the four woodlands, the water conservation capacity was determined to be the strongest in woodland IV (P. orientalis×Apricot), 157.43 mm, and weakest in woodland Ⅲ (P. tabulaeformis×Q. mongolica). 参考文献 相似文献 引证文献