四川农业大学学报 ›› 2021, Vol. 39 ›› Issue (3): 370-377.doi: 10.16036/j.issn.1000-2650.2021.03.013

• 林业科学 • 上一篇    下一篇

不同林分配置对土壤水分物理性质的影响

徐雅洁1, 郭月峰1,*, 姚云峰1, 祁伟1,2, 王鑫1, 刘晓宇1   

  1. 1.内蒙古农业大学沙漠治理学院,呼和浩特 010010;
    2.内蒙古水利水电勘测设计院,呼和浩特 010020
  • 收稿日期:2020-11-29 出版日期:2021-06-28 发布日期:2021-07-05
  • 通讯作者: *郭月峰,博士,副教授,硕士生导师,主要从事水土保持与荒漠化防治研究工作,E-mail:guoyuefeng0525@126.com。
  • 作者简介:徐雅洁,硕士研究生。
  • 基金资助:
    国家自然科学基金项目(31960329); 内蒙古自治区科技计划项目(2021GG0085、2019GG004)

Effect of Different Forest-Stand Configuration on Soil-Moisture Physical Properties

XU Yajie1, GUO Yuefeng1,*, YAO Yunfeng1, QI Wei1,2, WANG Xin1, LIU Xiaoyu1   

  1. 1. College of Desert Control Science and Engineering,Inner Mongolia Agricultural University,Hohhot 010010,China;
    2. Inner Mongolia Water Resources and Hydropower Survey and Design Institute,Hohhot 010020,China
  • Received:2020-11-29 Online:2021-06-28 Published:2021-07-05

摘要: 【目的】探讨不同林分配置对土壤水分物理性质的影响,以期为人工林的可持续经营与管理提供理论依据。【方法】以西柳沟3种造林树种纯林与混交林土壤水分物理性质为研究对象,采用常规方法对0~30 cm土层土壤含水量、土壤容重、土壤孔隙度和土壤崩解量进行测定,并构建土壤崩解量与土壤水分物理性质的回归模型。【结果】①不同林分配置的土壤容重和土壤孔隙度差异显著。沙棘×柠条、山桃×柠条、沙柳×柠条混交林相较于山杏、油松纯林能够显著降低土壤容重,增加土壤总孔隙度、非毛管孔隙度和毛管孔隙度。②不同林分配置的土壤含水量和崩解量差异显著。沙柳×柠条、油松×柠条、山桃×柠条混交林相较于山杏、柠条纯林能够显著增加土壤含水量,减小土壤崩解量。③不同林分配置未能改变土壤性质垂直分布特性,土壤孔隙度、崩解量随土层深度增加而降低,土壤容重、含水量随土层深度增加而增加。④本研究通过岭回归分析得到土壤崩解量与土壤含水量、容重、毛管孔隙度的方程:Y(土壤崩解量)=0.033 8-0.004 9X1(土壤含水量)+0.071 6X2(土壤容重)-0.000 2X3(土壤毛管孔隙度),且上述3个变量可以解释因变量的85.37%。【结论】相较于山杏、油松、柠条纯林,沙棘×柠条、山桃×柠条、沙柳×柠条、油松×柠条等混交林更有利于改善土壤水分物理性质,提高水源涵养能力。

关键词: 西柳沟, 林分配置模式, 土壤水分物理性质, 岭回归

Abstract: 【Objective】 In order to study and discuss the impacts of different forest-stand configurations over soil-moisture physical properties, expecting to provide a certain theoretical foundation for subsequent sustainable operations and management for artificial forests. 【Method】 By taking the soil-moisture physical properties existing in 3 types of pure stands of forest planting species and mixed forests in Xiliugou as research objects, with the adoption of conventional methods, soil-moisture content, soil-bulk density, soil porosity, and soil collapse within the depth range of 0-30 cm were measured. Then, a regression model was established to present physical properties in both soil disintegration and soil moisture. 【Result】 ①There were significant differences in soil bulk density and soil porosity among different forest-stand configurations. Compared with the pure forests of Armeniaca sibirica and Pinus tabulaeformis, the mixed forests of Hippophae rhamnoides×Caragana korshinskii, Prunus dacidiana×Caragana korshinskii, Salix cheilophila×Caragana korshinskii can significantly reduce soil bulk density and increase soil total porosity, non-capillary porosity, and capillary porosity.②The different forest-stand configurations can also change soil moisture content and disintegration amount. The mixed forests of Salix cheilophila×Caragana korshinskii, Pinus tabulaeformis×Caragana korshinskii, Prunus dacidiana×Caragana korshinskii can significantly increase soil water content and reduce soil disintegration compared with pure Armeniaca sibirica and Caragana korshinskii forest.③However, this configuration failed to change the vertical distribution characteristics of soil properties. On one hand, both soil porosity and disintegration amount gradually decreased with an increase in the soil depth. On the other hand, soil-bulk density and water content also increased with the increase of soil depth. ④According to ridge regression analysis, the regression equation between soil disintegration and soil water content, capacity, and capillary porosity was obtained: Y (soil disintegration) =0.033 8-0.004 8X1 (soil water content)+0.071 6X2 (soil bulk density)-0.000 2X3 (soil capillary porosity), in which the above 3 variables can better explain 85.37% of the above dependent variable. 【Conclusion】 Compared with pure forests of Armeniaca sibirica, Pinus tabulaeformis and Caragana korshinskii, mixed forests of Hippophae rhamnoides×Caragana korshinskii, Prunus dacidiana×Caragana korshinskii, Salix cheilophila×Caragana korshinskii, Pinus tabulaeformis×Caragana korshinskii, etc. are more conducive to improving the physical properties of soil moisture and improving water conservation ability.

Key words: Xiliugou, forest allocation mode, soil-moisture physical properties, ridge regression

中图分类号: 

  • S714.2