New empirical-point pedotransfer functions for water retention data for a wide range of soil texture and climates  

作　　者：Aline Mari Huf dos Reis Luiz Fernando Pires Robson AndréArmindo 

机构地区：[1]Institute of Socio-Environmental Studies,Federal University of Goias,74001-970,Goiania,Goias,Brazil [2]Department of Physics,State University of Ponta Grossa,84030-900,Ponta Grossa,Parana,Brazil [3]Department of Physics,Institute of Natural Sciences,Federal University of Lavras,37200-900,Lavras,Minas Gerais,Brazil

出　　处：《International Soil and Water Conservation Research》2024年第4期855-867,共13页国际水土保持研究(英文)

摘　　要：Knowing soil hydraulic properties is essential to support soil use and management practices;however,their measuring is commonly expensive and time-consuming.Thus,pedotransfer functions(PTFs)have been used to quantify physical properties such as the soil water retention curve(SWRC).SWRC relates the volumetric soil water content(q)as a function of the matric potential(h)and plays a vital role in soil hydraulic modeling.Point-PTFs estimate key-points of the SWRC,often from measured texture,bulk density,and organic matter.This study aimed to formulate new point-PTFs to estimate q(h)data ranging from q(-0.1 m)to q(-150 m)to be applied in subtropical,tropical and temperate soils.The PTF equations were derived from linear and non-linear regressions of measured soil physical properties against to the water retention data.The prediction performance of the new-formulated PTFs overcame the performance of already existing and widely-known PTFs recognized in the literature and can be,therefore,applied in soil water retention topics under a wider textural range.

关 键 词：Soil water retention curve Soil water release curve Pedofunction 

分 类 号：S15[农业科学—土壤学]