Plants in water-controlled ecosystems: active role in hydrologic processes and response to water stress - II. Probabilistic soil moisture dynamics

被引：603

作者：

Laio, F

Porporato, A

Ridolfi, L

Rodriguez-Iturbe, I ^{[1
]}

机构：

[1] Princeton Univ, Princeton Environm Inst, Princeton, NJ 08544 USA

[2] Princeton Univ, Grad Program Environm Engn & Water Resources, Princeton, NJ 08544 USA

[3] Politecn Torino, Dipartimento Idraul Trasporti & Infrastrutture Ci, I-10129 Turin, Italy

来源：

ADVANCES IN WATER RESOURCES | 2001年 / 24卷 / 07期

基金：

美国国家科学基金会;

关键词：

soil moisture; vegetation; ecohydrology; stochastic processes; hydrology; water stress; water balance; savannas; grasslands; crossing analysis;

D O I：

10.1016/S0309-1708(01)00005-7

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

A stochastic model for soil moisture dynamics at a point is studied in detail. Rainfall is described as a marked Poisson process, producing a state-dependent infiltration into the soil. Losses due to leakage and evapotranspiration also depend on the existing level of soil moisture through a simplifying but realistic representation of plant physiological characteristics and soil properties. The analytic solution of the steady-state probability distributions is investigated to assess the role of climate, soil, and vegetation in soil moisture dynamics and water balance. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：707 / 723

页数：17

共 72 条

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