A Regional Legacy Soil Dataset for Prediction of Sand and Clay Content with Vis-Nir-Swir, in Southern Brazil
نویسندگان
چکیده
منابع مشابه
VIS-NIR, SWIR and LWIR Imagery for Estimation of Ground Bearing Capacity
Ground bearing capacity has become a relevant concept for site-specific management that aims to protect soil from the compaction and the rutting produced by the indiscriminate use of agricultural and forestry machines. Nevertheless, commonly known techniques for its estimation are cumbersome and time-consuming. In order to alleviate these difficulties, this paper introduces an innovative sensor...
متن کاملPrediction of soil TN and TC at a farm-scale using VIS-NIR spectroscopy
Building cost-effective models is of academic and practical value for fast measurement of soil properties, especially at a farm-scale. The aim of this study is to build quantitative models for soil total nitrogen (TN) and total carbon (TC) using visible and near infrared (VIS-NIR) spectroscopy. Dried samples (n=122) collected from an experimental farm, at Silsoe, Bedfordshire, United Kingdom, w...
متن کاملIn-Field Absolute Calibration of Ground and Airborne VIS-NIR-SWIR Hyperspectral Point Spectrometers
Spectrometer calibration and measurements of spectral radiance are often required when performing ground, aerial, and space measurements. While calibrating a spectrometer in the field using an integrating sphere is practically unachievable, calibration against a quartz halogen (QH) lamp is a quite easy and feasible option. We describe a calibration protocol whereby a professional QH lamp, opera...
متن کاملبرآورد مقدار کربن آلی خاک با استفاده از داده‌های ابر طیفی در گستره VIS-NIR-SWIR
سابقه و هدف: مقدار کربن آلی خاک به عنوان یکی از مهمترین ویژگی‌های خاک، اهمیت بسیاری در توسعه و مدیریت پایدار کشاورزی دارد. مقدار مواد آلی خاک که عموما بر اساس مقدار کربن آلی آن اندازه گیری می‌شود، معمولا به عنوان شاخص کلیدی کیفیت و عملکرد خاک قلمداد می گردد (24). وجود مواد آلی مکفی خاک، تاثیرات مثبتی بر باروری خاک، ظرفیت نگهداشت آب خاک و ترسیب کربن دارد (35؛ 26؛ 25؛ 30). تحقیقات اخیر نشان داده ...
متن کاملPrediction of Soil Organic Matter by VIS-NIR Spectroscopy Using Normalized Soil Moisture Index as a Proxy of Soil Moisture
Soil organic matter (SOM) is an important parameter of soil fertility, and visible and near-infrared (VIS–NIR) spectroscopy combined with multivariate modeling techniques have provided new possibilities to estimate SOM. However, the spectral signal is strongly influenced by soil moisture (SM) in the field. Interest in using spectral classification to predict soils in the moist conditions to min...
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ژورنال
عنوان ژورنال: Revista Brasileira de Ciência do Solo
سال: 2019
ISSN: 1806-9657
DOI: 10.1590/18069657rbcs20180174