Estimating crop coefficients from fraction of ground cover and height
نویسندگان
چکیده
منابع مشابه
Crop Ground Cover Fraction and Canopy Chlorophyll Content Mapping Using Rapideye Imagery
Remote sensing is a suitable tool for estimating the spatial variability of crop canopy characteristics, such as canopy chlorophyll content (CCC) and green ground cover (GGC%), which are often used for crop productivity analysis and site-specific crop management. Empirical relationships exist between different vegetation indices (VI) and CCC and GGC% that allow spatial estimation of canopy char...
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We present new coarse resolution (0.5× 0.5) vegetation height and vegetation-cover fraction data sets between 60 S and 60 N for use in climate models and ecological models. The data sets are derived from 2003–2009 measurements collected by the Geoscience Laser Altimeter System (GLAS) on the Ice, Cloud and land Elevation Satellite (ICESat), the only LiDAR instrument that provides close to global...
متن کاملHigh Throughput Determination of Plant Height, Ground Cover, and Above-Ground Biomass in Wheat with LiDAR
Crop improvement efforts are targeting increased above-ground biomass and radiation-use efficiency as drivers for greater yield. Early ground cover and canopy height contribute to biomass production, but manual measurements of these traits, and in particular above-ground biomass, are slow and labor-intensive, more so when made at multiple developmental stages. These constraints limit the abilit...
متن کاملEstimating Crop Residue Decomposition Coefficients Using Substrate-induced Respiration
-hlodeling of crop residue decomposition for nutrient cycling and effectiveness of residues to control soil erosion requires information on crop-specific decomposition coefficients (k). Respiration of decomposing residues reflects the activity of the microbial community and should give an indication of the residue decomposition rate. A method for estimating k using substrate-induced respiration...
متن کاملEstimating Crop Coefficients Using Remote Sensing-Based Vegetation Index
Crop coefficient (Kc)-based estimation of crop evapotranspiration is one of the most commonly used methods for irrigation water management. However, uncertainties of the generalized dual crop coefficient (Kc) method of the Food and Agricultural Organization of the United Nations Irrigation and Drainage Paper No. 56 can contribute to crop evapotranspiration estimates that are substantially diffe...
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ژورنال
عنوان ژورنال: Irrigation Science
سال: 2009
ISSN: 0342-7188,1432-1319
DOI: 10.1007/s00271-009-0182-z