کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8054889 1519496 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A practical method using a network of fixed infrared sensors for estimating crop canopy conductance and evaporation rate
ترجمه فارسی عنوان
یک روش عملی با استفاده از یک شبکه از سنسورهای مادون قرمز ثابت برای ارزیابی میزان هدایت سایبان محصول و نرخ تبخیر
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی کنترل و سیستم های مهندسی
چکیده انگلیسی
We describe the development and testing of a novel thermal infrared sensor incorporating a dry reference surface for incorporation into field wireless sensor networks (WSNs) that allows the estimation of absolute transpiration rates and canopy conductance. This 'dry reference' sensor provides a physical reference surface that mimics the temperature of a non-transpiring canopy and can therefore be used in conjunction with canopy temperature to estimate either canopy transpiration or canopy conductance. The dry reference sensor is based on a hemispherical surface that mimics the distribution of shaded and sunlit leaves in non-transpiring canopy. Three dry reference sensors were deployed in a commercial cotton crop from which canopy transpiration and conductance was estimated for the entire season. We provide evidence that fixed infrared sensors with a dry reference surface, when combined with limited meteorological data, can provide useful continuous monitoring of crop water use and canopy conductance that is potentially of value for irrigation management and crop phenotyping applications. Key to the success of this dry sensor application is the requirement that the spectral absorptance of the sensor is tailored to match the crop of interest.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Biosystems Engineering - Volume 165, January 2018, Pages 59-69
نویسندگان
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