基于双孔隙模型研究刺槐林地和苹果地水量平衡要素的差异性  

Study on the Difference of Water Balance Between Robinia Pseudoacacia Forestland and Apple Orchard Based on Dual-Porosity Model

作　　者：郭天崎 黄明斌 朱谧远 张锐 GUO Tianqi;HUANG Mingbin;ZHU Miyuan;ZHANG Rui(College of Natural Resources and Environment,Northwest A&F University,Yangling,Shaanxi 712100,China;State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau,Institute of Soil and Water Conservation,Northwest A&F University,Yangling,Shaanxi 712100,China)

机构地区：[1]西北农林科技大学资源环境学院,陕西杨凌712100 [2]西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室,陕西杨凌712100

出　　处：《水土保持研究》2023年第5期138-145,共8页Research of Soil and Water Conservation

基　　金：中国科学院战略性先导专项(B类)课题(XDB40000000);中国科学院战略性先导科技专项课题(XDB20020202)。

摘　　要：[目的]明晰刺槐林地和苹果园水量平衡要素的动态变化和差异,可为生态可持续发展提供理论指导。[方法]利用Hydrus-1D中的双孔隙模型和标定的参数模拟了2012—2021年刺槐林地和苹果地的水量平衡各要素的动态变化过程。[结果]优化期和验证期Hydrus-1D中双孔模型的R^(2)分别为0.61,0.76,RMSE分别为0.026,0.048 cm^(3)/cm^(3),模拟期水量平衡误差分别为0.18%和0.04%;刺槐林地与苹果地的蒸腾量分别为(372±70)mm和(320±34)mm,蒸发量为(256±44)mm和(288±36)mm,土壤储水量变化量为(-0.61±96)mm和(-3.26±87)mm,深层渗漏量为(34±45)mm和(59±48)mm。[结论]该模型可以较好地模拟刺槐林地和苹果地的水量平衡要素的动态变化;相比于与苹果地,刺槐林地的蒸腾量偏大,蒸发量和深层渗漏量偏小,ΔS的波动更为明显。[Objective]The study aims to clarify the dynamic changes and differences in water balance elements between Robinia pseudoacacia woodland and apple orchard,and to provide theoretical guidance for ecological sustainable development.[Methods]This study used the dual pore model and calibrated parameters in Hydras-1D to simulate the dynamic changes of various elements of water balance in Robinia pseudoacacia woodland and apple orchard from 2012 to 2021.[Results]The R^(2)and RMSE of the two hole model in the optimization and validation periods of Hydras-1D were 0.61 and 0.76,respectively,and 0.026 and 0.048 cm^(3)/cm^(3),respectively.The water balance errors in the simulation period were 0.18%and 0.04%,respectively;The transpiration of Robinia pseudoacacia forestland and apple orchard were(372±70)mm and(320±34)mm,respectively,and the evaporation was(256±44)mm and(288±36)mm.Variation of soil water storage was(-0.61±96)mm and(-3.26±87)mm,and deep leakage was(34±45)mm and(59±48)mm.[Conclusion]The model can better simulate the dynamic changes of water balance elements in Robinia pseudoacacia woodland and apple orchard.Compared with apple fields,Robinia pseudoacacia forest has a larger transpiration,a smaller evaporation and deeper leakage,and a more significant fluctuation in soil water storage.

关 键 词：土地利用方式 双孔模型 再分布过程 土壤剖面水分含量 水量平衡 

分 类 号：S152.5[农业科学—土壤学] S161.4[农业科学—农业基础科学]