DOI: 10.1016/j.jag.2016.06.018
Scopus记录号: 2-s2.0-84994418197
论文题名: Testing estimation of water surface in Italian rice district from MODIS satellite data
作者: Ranghetti L ; , Busetto L ; , Crema A ; , Fasola M ; , Cardarelli E ; , Boschetti M
刊名: International Journal of Applied Earth Observation and Geoinformation
ISSN: 15698432
出版年: 2016
卷: 52 起始页码: 284
结束页码: 295
语种: 英语
英文关键词: Flooding detection
; Landsat
; MOD09A1
; MODIS
; NDFI
; NDVI
; Remote sensing
; Rice
; Water fraction
Scopus关键词: flooding
; Landsat
; MODIS
; NDVI
; paddy field
; remote sensing
; rice
; satellite data
; Italy
; Animalia
英文摘要: Recent changes in rice crop management within Northern Italy rice district led to a reduction of seeding in flooding condition, which may have an impact on reservoir water management and on the animal and plant communities that depend on the flooded paddies. Therefore, monitoring and quantifying the spatial and temporal variability of water presence in paddy fields is becoming important. In this study we present a method to estimate dynamics of presence of standing water (i.e. fraction of flooded area) in rice fields using MODIS data. First, we produced high resolution water presence maps from Landsat by thresholding the Normalised Difference Flood Index (NDFI) made: we made it by comparing five Landsat 8 images with field-obtained information about rice field status and water presence. Using these data we developed an empirical model to estimate the flooding fraction of each MODIS cell. Finally we validated the MODIS-based flooding maps with both Landsat and ground information. Results showed a good predictability of water surface from Landsat (OA = 92%) and a robust usability of MODIS data to predict water fraction (R2 = 0.73, EF = 0.57, RMSE = 0.13 at 1 × 1 km resolution). Analysis showed that the predictive ability of the model decreases with the greening up of rice, so we used NDVI to automatically discriminate estimations for inaccurate cells in order to provide the water maps with a reliability flag. Results demonstrate that it is possible to monitor water dynamics in rice paddies using moderate resolution multispectral satellite data. The achievement is a proof of concept for the analysis of MODIS archives to investigate irrigation dynamics in the last 15 years to retrieve information for ecological and hydrological studies. © 2016 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/80025
Appears in Collections: 气候变化事实与影响
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作者单位: Institute for Electromagnetic Sensing of Environment, Consiglio Nazionale delle Ricerche, Via Corti 12, Milano, Italy; Department of Earth and Environmental Sciences, Università di Pavia, Via Ferrata 9, Pavia, Italy
Recommended Citation:
Ranghetti L,, Busetto L,, Crema A,et al. Testing estimation of water surface in Italian rice district from MODIS satellite data[J]. International Journal of Applied Earth Observation and Geoinformation,2016-01-01,52