Assessing satellite-based basal crop coefficients for irrigated grapes (Vitis vinifera L)

被引：145

作者：

Campos, Isidro ^{[1
]}

Neale, Christopher M. U. ^{[2
]}

Calera, Alfonso ^{[1
]}

Balbontin, Claudio ^{[1
]}

Gonzalez-Piqueras, Jose ^{[1
]}

机构：

[1] Univ Castilla La Mancha, Grp Teledetecc & SIG, Inst Desarrollo Reg IDR, Albacete 02071, Spain

[2] Utah State Univ, Dept Civil & Environm Engn, Logan, UT 84322 USA

来源：

AGRICULTURAL WATER MANAGEMENT | 2010年 / 98卷 / 01期

关键词：

Evipotranspiration of grapes; Vegetation indices; Remote sensing; Canopy reflectance; Crop coefficients; VEGETATION INDEXES; WATER-USE; EVAPOTRANSPIRATION; MODEL; EVAPORATION; RADIATION; MANCHA; COTTON; PLANT; RATIO;

D O I：

10.1016/j.agwat.2010.07.011

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

A combined methodology of basal crop coefficient (K-cb) derived from vegetation indices (VI) obtained from satellite images and a daily soil water balance in the root zone of the crop was proposed to accurately estimate the daily grape crop coefficient and actual evapotranspiration The modeled values were compared with field measurements of crop evapotranspiration (ET) using an energy balance eddy-covariance flux tower and adjusted for closure using the measured Bowen ratio A linear relation between K-cb and VI for vineyard was obtained K-cb = 1 44 x NDVI-0 10 and K-cb = 1 79 x SAVI-0 08 The correlation of the measured crop coefficient (K-c) and modeled (K-crf) exhibits a linear tendency K-c, = 0 96K(crf) r(2) = 0 67 Other derived parameters such as weekly K. and daily and weekly ET show good consistency with measurements and higher coefficients of determination The study of the soil water balance suggests the importance of soil water storage in grapes within the La Mancha region These results validate the use of remote sensing as a tool for the estimation of evapotranspiration of irrigated wine grapes planted on trellis systems (c) 2010 Elsevier BV All rights reserved

引用

页码：45 / 54

页数：10

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