林业科学研究2026，Vol.39Issue(3)：118-129,12.DOI:10.12403/j.1001-1498.20250228
基于一维土柱试验的宁南山区杏树林土壤水分运移过程模拟
Retrieval of Soil Water Transport and Hydraulic Parameters in Apricot Orchards of Southern Ning Mountain Region
摘要
Abstract
[Objective]To clarify the characteristics of soil water infiltration,capillary water transport,and changes in hydraulic parameters in apricot(Prunus armeniaca L.)orchards in the southern mountainous region of Ningxia.[Method]Based on the soils from farmland(CK)and apricot orchard aged 3,10,17,23,and 35-year-old,ring corers were employed to obtain 0-40 cm surface soil samples for bulk density de-termination.Based on bulk density,CK and soils of different forest ages were reconstructed.One-dimen-sional vertical soil column experiments were conducted to analyze variations in wetness peak,cumulative infiltration volume,infiltration rate,and capillary water movement characteristics across different forest ages.Four infiltration models were applied to simulate the water infiltration process and evaluate their ap-plicability.In addition,soil hydraulic parameters were inversely estimated using Hydrus-1D,and dynamic simulation of soil profile moisture distribution was conducted.[Result]After 280 min of infiltration,com-pared with CK,the wetting front depth,cumulative infiltration volume,and steady-state infiltration rate all showed a decreasing trend in the 3-,10-,17-,23-,and 35-year-old orchard soils.Horton model performed the best,followed by General empirical model,Kostiakov model,and Philip model.Among the In Hydrus-1D-inverted hydraulic parameters,the inverse of the air suction coefficient α gradually increasesed with orchard age,while the residual water content θr,saturated water content θs,shape factor n,and saturated hydraulic conductivity Ks gradually decreased.Hydrus-1D simulations of soil profile moisture content showed R2 values ranging from 0.91 to 0.96,with RMSE and MAE both≤2%.Capillary rise height and water uptake gradually decreased.[Conclusion]With increasing orchard age,both soil water infiltration ca-pacity and capillary transport efficiency significantly declined,revealing that long-term cultivation of artifi-cial apricot trees exacerbates excessive depletion of deep soil moisture in the southern Ning Mountains.These findings contribute to enhancing productivity in artificial forest lands within the southern Ning Moun-tains and offer valuable guidance for the establishment and sustainable development of artificial forests in arid and semi-arid regions.关键词
宁南山区/林龄/水分运动/水力学参数/Hydrus-1DKey words
Ningnan mountain area/forest age/water movement/hydraulic parameters/hydrus-1D分类
农业科技引用本文复制引用
王刚,顾常云,马小文,白一茹..基于一维土柱试验的宁南山区杏树林土壤水分运移过程模拟[J].林业科学研究,2026,39(3):118-129,12.基金项目
国家自然科学基金项目"黄土区土壤干化对人工杏树林水分运移过程影响及机制研究"(32360321) （32360321）
宁夏自然科学基金项目"压砂地土壤水力学参数反演及其溶质运移数值模拟"(2023AAC02018) （2023AAC02018）
宁夏回族自治区重点研发项目"宁夏坝地潜力评价及利用关键技术研究示范"(2024BEG02007). （2024BEG02007）
