DETERMINING SOIL HYDROLOGIC CHARACTERISTICS ON A REMOTE FOREST WATERSHED BY CONTINUOUS MONITORING OF SOIL-WATER PRESSURES, RAINFALL AND RUNOFF

被引：8

作者：

AHUJA, LR

ELSWAIFY, SA

机构：

[1] Department of Agronomy and Soil Science, College of Tropical Agriculture, University of Hawaii at Manoa, Honolulu

来源：

JOURNAL OF HYDROLOGY | 1979年 / 44卷 / 1-2期

关键词：

D O I：

10.1016/0022-1694(79)90151-3

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Continuous monitoring of soil-water pressures, rainfall and runoff under natural conditions was tested as a technique for determining soil hydrologic characteristics of a remote forest watershed plot. A completely battery-powered (and thus portable) pressure transducer-scanner-recorder system was assembled for monitoring of soil-water pressures in the tensiometric range. Measurements during several heavy rainstorms incorporating a period of steady infiltration rate were utilized to determine the saturated (or near-saturated, because of entrapped air) hydraulic conductivities of different soil horizons. Unsaturated hydraulic conductivities were obtained as usual from drainage data. Use of the monitored soil-water pressure data under natural conditions in conjunction with the measured unsaturated soil properties to calculate deep percolation, infiltration-minus-evapotranspiration and evapotranspiration is illustrated. © 1979.

引用

页码：135 / 147

页数：13

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