摘要
[目的]探究不同林型橡胶林土壤入渗特征及其影响因子,为高效、可持续橡胶林的构建提供数据支撑。[方法]以单一橡胶林(SR)、人工雨林橡胶林(AF)、橡胶-益智复合林(AR)、橡胶-可可复合林(RC)、橡胶-茶树复合林(RT)对入渗过程进行拟合和评价。[结果]纵观0-100 cm土壤剖面,SR容重最大,孔隙度、田间持水量和饱和持水量最小;SR初始入渗速率(0.03 cm/min)、平均入渗速率(0.009 cm/min)、稳定入渗速率(0.005 cm/min)均显著低于橡胶复合林;通过拟合发现Horton模型对胶农复合林入渗过程拟合较好且拟合参数具有物理意义;除非毛管孔隙度外,土壤物理性质与初始入渗速率有极显著相关关系(p<0.01),与总累积入渗量、稳定入渗速率有显著相关关系(p<0.05),但与平均入渗速率无显著相关性(p>0.05),而稳渗前累积入渗量受土壤持水性能的影响显著(p<0.01)。[结论]结合田间入渗过程,采用初始入渗速率、稳定入渗速率和稳渗前累积入渗量来评估不同林型橡胶林土壤水分入渗和储存性能;SR土壤持水能力、渗透性均低于橡胶复合林,其中RC土壤持水能力最好,RT土壤入渗性能最好,因此间作茶树和可可对改善土壤结构及水文特性有重要作用。
[Objective]The aims of this study are to explore the soil water infiltration characteristics and influencing factors of different forest types rubber forest,and to provide data support for building of efficient and sustainable rubber forests.[Methods]A single rubber forest(SR),rubber artificial rain forest composite system(AF),rubber-puzzle composite system(AR),rubber-cocoa composite system(RC),rubber-tea tree composite system(RT)were selected as the research objects.Soil physical properties and soil moisture infiltration performance were determined and analyzed.Kostiakov,Philip,Horton model were used to fit and evaluate the infiltration process.[Results]Examination of the 0-100 cm soil profile revealed that SR bulk density was the highest,while porosity,field water holding capacity and saturated water holding capacity were the lowest.The initial infiltration rate(0.03 cm/min),average infiltration rate(0.009 cm/min),and steady infiltration rate(0.005 cm/min)of SR were significantly lower than those of rubber composite forests.The Horton model effectively fitted the infiltration process of rubber composite forests,with the model′s parameters holding physical significance.With the exception of capillary porosity,soil physical properties showed significant correlation with the initial infiltration rate(p<0.01),and with the total cumulative infiltration amount and soil saturated water conductivity(p<0.05),but not with the average infiltration rate(p>0.05).The cumulative infiltration before stable infiltration was significantly affected by soil water retention(p<0.01).[Conclusion]Combined with the field infiltration process,the initial infiltration rate,steady infiltration rate and accumulated infiltration before steady infiltration were used to evaluate the soil water infiltration and storage performance of different forest types of rubber plantations.The soil water-holding capacity and permeability of SR were inferior to those of rubber composite forests,with RC demonstrating the highest soil water-holding capacity and permeability.Additionally,RT composite forests exhibit the best soil infiltration performance,highlighting the importance of intercropping tea and cocoa in improving soil structure and hydrological properties.
作者
马关媛
蒋小金
刘佳庆
刘文杰
陈春峰
张瑞
Ma Guanyuan;Jiang Xiaojin;Liu Jiaqing;Liu Wenjie;Chen Chunfeng;Zhang Rui(College of Ecology and Environment,Xinjiang University,Urumqi 830000,China;Key Laboratory of Tropical Forest Ecology,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla,Yunnan 666303,China;Public Technology Center,Xishuangbanna Tropical Botanical Garden,Chinese Academy of Sciences,Mengla,Yunnan 666303,China)
出处
《水土保持研究》
北大核心
2025年第1期57-65,72,共10页
Research of Soil and Water Conservation
基金
国家自然科学基金(32271648,32360367)
云南省基础研究计划(2019FI011,202201AT070216,202201AT070212)
云南省“兴滇英才支持计划”(XDYC-QNRC-2018-143)
中国科学院西部之光项目。
关键词
土壤水分入渗
物理性质
入渗速率
拟合模型
soil water infiltration
physical properties
infiltration rate
fitting model
作者简介
第一作者:马关媛(1999-),女(回族),云南昭通人,硕士研究生,研究方向生态水文。E-mail:mgy_ecology@163.com;通信作者:蒋小金(1983-),男,甘肃定西人,博士,研究员,主要从事橡胶林水文研究。E-mail:jiangxiaojin@xtbg.ac.cn;通信作者:刘佳庆(1987-),女(满族),辽宁抚顺人,博士,副教授,主要从事生态水文研究。E-mail:liujiaqing@xju.edu.cn。
