气候变化领域集成服务门户(CCPortal): Mapping of wheat lodging susceptibility with synthetic aperture radar data

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DOI	10.1016/j.rse.2021.112427
	Mapping of wheat lodging susceptibility with synthetic aperture radar data
	Chauhan S.; Darvishzadeh R.; van Delden S.H.; Boschetti M.; Nelson A.
发表日期	2021
ISSN	00344257
卷号	259
英文摘要	Crop lodging reduces yield quantity and grain quality of cereal crops. Understanding seasonal variation in crop lodging susceptibility enables lodging risk assessments and predictions of associated crop yield losses. We demonstrate a novel remote sensing-based approach, using sparse field observations and widely available synthetic aperture radar (SAR) satellite imagery, to map a safety factor against root lodging (SFA) in wheat. SFA quantifies the ability of the rooting system to support the self-weight moment of the whole plant and can be used as an indicator of in-season root lodging susceptibility. SAR satellite images, from Sentinel-1 and RADARSAT-2, were acquired synchronously with field measurements in Jolanda di Savoia, Ferrara, Italy during the 2018 winter wheat growing season. The field data included measurements from non-lodged (healthy) wheat such as plant height, height at the centre of gravity, self-weight moment of the whole plant, soil anchorage strength, SFA and those from lodged wheat such as crop angle of inclination, lodged area and the point of plant failure (stem or root). Field measurements confirmed that SFA decreased progressively through the season and was consistent with the observed lodging. Strong and significant correlations through the season were observed between SFA and SAR satellite image metrics. The validated regression models showed a strong relationship between field-measured SFA and the metrics from RADARSAT-2 (R2CV = 0.84, RMSECV = 0.54) and Sentinel-1 data (R2CV = 0.73, RMSECV = 0.59). However, it is possible that the relationship between SFA and SAR parameters is confounded by the variations in crop biomass, which is highly correlated with SFA (r = −0.71, p < 0.0001). Our study, for the first time, demonstrates the use of remote sensing SAR data for lodging susceptibility assessment. Current and planned satellite platforms have the potential for large scale, operational assessment of lodging susceptibility in cereal crops. © 2021
英文关键词	Lodging susceptibility; RADARSAT-2; Remote sensing; Safety factor; SAR; Sentinel-1; Wheat
语种	英语
scopus关键词	Crops; Radar imaging; Regression analysis; Remote sensing; Risk assessment; Safety factor; Satellite imagery; Space-based radar; Cereal crop; Lodging susceptibility; Radar data; Radar satellites; Radarsat-2; Remote-sensing; Root lodging; Self-weight; Sentinel-1; Wheat; Synthetic aperture radar; biomass; cereal; crop plant; crop yield; growing season; mapping method; RADARSAT; remote sensing; satellite data; satellite imagery; seasonal variation; synthetic aperture radar; waterlogging; Auvergne-Rhone-Alpes; Emilia-Romagna; Ferrara; France; Italy; Savoie; Indicator indicator
来源期刊	Remote Sensing of Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/178860
作者单位	Faculty of Geo-information Science and Earth Observation (ITC), University of Twente, Enschede, 7500AE, Netherlands; Horticulture and Product Physiology, Wageningen University, PO Box 16, Wageningen, 6700AA, Netherlands; CNR-IREA, Institute for Electromagnetic Sensing of the Environment, National Research Council, Milan, 20133, Italy
推荐引用方式 GB/T 7714	Chauhan S.,Darvishzadeh R.,van Delden S.H.,et al. Mapping of wheat lodging susceptibility with synthetic aperture radar data[J],2021,259.
APA	Chauhan S.,Darvishzadeh R.,van Delden S.H.,Boschetti M.,&Nelson A..(2021).Mapping of wheat lodging susceptibility with synthetic aperture radar data.Remote Sensing of Environment,259.
MLA	Chauhan S.,et al."Mapping of wheat lodging susceptibility with synthetic aperture radar data".Remote Sensing of Environment 259(2021).