Monitoring the combined effects of drought and salinity stress on crops using remote sensing in the Netherlands
-
Published:2022-09-13
Issue:17
Volume:26
Page:4537-4552
-
ISSN:1607-7938
-
Container-title:Hydrology and Earth System Sciences
-
language:en
-
Short-container-title:Hydrol. Earth Syst. Sci.
Author:
Wen WenORCID, Timmermans Joris, Chen Qi, van Bodegom Peter M.ORCID
Abstract
Abstract. Global sustainable agricultural systems are under threat,
due to increasing and co-occurring drought and salinity stresses. Combined
effects of these stresses on agricultural crops have traditionally been
evaluated in small-scale experimental studies. Consequently, large-scale
studies need to be performed to increase our understanding and assessment of
the combined impacts in agricultural practice in real-life scenarios. This
study aims to provide a new monitoring approach using remote-sensing
observations to evaluate the joint impacts of drought and salinity on crop
traits. In our tests over the Netherlands at large spatial scale (138.74 km2), we calculated five functional traits for both maize and potato
from Sentinel-2 observations, namely leaf area index (LAI), the fraction of
absorbed photosynthetically active radiation (FAPAR), the fraction of
vegetation cover (FVC), leaf chlorophyll content (Cab), and leaf water
content (Cw). Individual and combined effects of the stresses on the
seasonal dynamics in crop traits were determined using both one-way and
two-way analyses of variance (ANOVAs). We found that both stresses (individual and co-occurring)
affected the functional traits of both crops significantly (with R2
ranging from 0.326 to 0.796) though with stronger sensitivities to drought
than to salinity. While we found exacerbating effects within co-occurrent
stresses, the impact level depended strongly on the moment in the growing
season. For both crops, LAI, FAPAR, and FVC dropped the most under severe
drought stress conditions. The patterns for Cab and Cw were more inhibited
by co-occurring drought and salinity. Consequently, our study constitutes a
way towards evaluating drought and salinity impacts in agriculture, with the
possibility of potential large-scale application for sustainable food
security.
Funder
China Scholarship Council
Publisher
Copernicus GmbH
Subject
General Earth and Planetary Sciences,General Engineering,General Environmental Science
Reference85 articles.
1. Asner, G. P., Scurlock, J. M. O., and Hicke, J. A.: Global synthesis of
leaf area index observations: Implications for ecological and remote sensing
studies, Global Ecol. Biogeogr., 12, 191–205, https://doi.org/10.1046/j.1466-822X.2003.00026.x, 2003. 2. Ayers, R. S. and Westcot, D. W.: Water quality for agriculture, Food and Agriculture Organization of the United Nations Rome, https://www.waterboards.ca.gov/water_issues/programs/tmdl/records/state_board/1985/ref2648.pdf (last access: 9 September 2022), 1985. 3. Azad, N., Rezayian, M., Hassanpour, H., Niknam, V., and Ebrahimzadeh, H.:
Physiological mechanism of salicylic acid in mentha pulegium l. Under
salinity and drought stress, Braz. J. Bot., 44, 359–369,
https://doi.org/10.1007/s40415-021-00706-y, 2021. 4. Bernstein, L. and Ayers, A.: Salt tolerance of cabbage and broccoli, United
States Salinity Laboratory Report to Collaborators, Riverside, CA, 39, 1949. 5. Boussetta, S., Balsamo, G., Beljaars, A., Kral, T., and Jarlan, L.: Impact
of a satellite-derived leaf area index monthly climatology in a global
numerical weather prediction model, Int. J. Remote Sens., 34, 3520–3542,
https://doi.org/10.1080/01431161.2012.716543, 2012.
Cited by
10 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献
|
|