Abstract
This study introduces a first assessment of the capabilities of PRISMA (PRecursore IperSpettrale della Missione Applicativa)—the new hyperspectral satellite sensor of the Italian Space Agency (ASI)—for Non-Photosynthetic Vegetation (NPV) monitoring, a topic which is becoming very relevant in the field of sustainable agriculture, being an indicator of crop residue (CR) presence in the field. Data-sets collected during the mission validation phase in croplands are used for mapping the NPV presence and for modelling the diagnostic absorption band of cellulose around 2.1 μm with an Exponential Gaussian Optimization approach, in the perspective of the prediction of the abundance of crop residues. Results proved that PRISMA data are suitable for these tasks, and call for further investigation to achieve quantitative estimates of specific biophysical variables, also in the framework of other hyperspectral missions.
Highlights
Non-photosynthetic vegetation (NPV) refers to vegetation that cannot perform a photosynthetic function, including standing dead vegetation, surface plant litter and crop residues
In order to accomplish the first objective of the present study, the spectra collected in the field at both target sites were analysed to identify spectral features diagnostic of crop residues
On the base of the spectral behaviour in the 2.0–2.2 μm interval, PRISMA images A1 and J1 have been classified at the scale of parcel, as described in Section 2.3, and the results evaluated by comparison with crop maps, used as reference ground truth
Summary
Non-photosynthetic vegetation (NPV) refers to vegetation that cannot perform a photosynthetic function, including standing dead vegetation, surface plant litter and crop residues. The presence of a layer of dead vegetation on topsoils inhibits moisture evaporation from soil, provides protection against wind and water erosion [4], reduces soil compaction due to agricultural machinery and improves the soil structure. Such practise allows to increase the nutrients content in soil (organic carbon and nitrogen), control the carbon uptake (including CO2 fixing), and regulate water flows (infiltration, evaporation, runoff) [5,6,7]. Keeping crop residues is a fundamental aspect for preserving soil-related agri-ecological conservation functions, based on low-intensity tillage, permanent soil cover and crop rotation
Sign-in/Register to view highlights & summary Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
