Stronger effects of accumulated soil moisture deficit on gross primary productivity and light use efficiency than lagged soil moisture deficit for cropland and forest
(2025) In Agricultural and Forest Meteorology 361.- Abstract
Many studies have underscored the impacts of drought on ecosystems, and some researchers reported the effects of accumulated soil moisture deficit (ASMD) on light use efficiency (LUE) in grassland. However, the potential effects of ASMD on gross primary productivity (GPP) and LUE for both cropland and forest ecosystems are still not understood. This study elucidated the effects of accumulated and lagged soil moisture deficit (ASMD and LSMD, respectively) on GPP and LUE in these two ecosystems by using observations from 10 cropland and 25 forest flux sites during drought years. The results showed that the effects of ASMD and LSMD on LUE/GPP for both cropland and forests obviously surpass the concurrent effects (CSMD). For cropland, the... (More)
Many studies have underscored the impacts of drought on ecosystems, and some researchers reported the effects of accumulated soil moisture deficit (ASMD) on light use efficiency (LUE) in grassland. However, the potential effects of ASMD on gross primary productivity (GPP) and LUE for both cropland and forest ecosystems are still not understood. This study elucidated the effects of accumulated and lagged soil moisture deficit (ASMD and LSMD, respectively) on GPP and LUE in these two ecosystems by using observations from 10 cropland and 25 forest flux sites during drought years. The results showed that the effects of ASMD and LSMD on LUE/GPP for both cropland and forests obviously surpass the concurrent effects (CSMD). For cropland, the mean R2 between CSMD/LSMD/ASMD with LUE were 0.22, 0.47, 0.56, respectively, and were 0.29, 0.54, 0.74 with GPP, respectively. For forest, the mean R2 between CSMD/LSMD/ASMD with LUE were 0.21, 0.36, 0.46, respectively, and were 0.34, 0.63, and 0.65 with GPP, respectively. Additionally, the effects of ASMD and LSMD on LUE are more pronounced for cropland than for forests, and for both cropland and forest, the effect of ASMD is stronger than that of LSMD. This study underscores the crucial role of ASMD in influencing LUE and GPP for cropland and forests, thereby offering a theoretical foundation for incorporating ASMD into LUE models to enhance the accuracy of GPP simulations, especially during drought periods.
(Less)
- author
- Jiang, Zhuoyou ; Zhou, Yanlian ; Gao, Shang ; Dong, Zhoutong ; Wang, Yingying ; Duan, Zheng LU ; He, Wei ; Liu, Yibo and Ju, Weimin
- organization
- publishing date
- 2025-02
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Accumulated soil moisture deficit, Cropland, Forest, Gross primary productivity, Lagged soil moisture deficit, Light use efficiency
- in
- Agricultural and Forest Meteorology
- volume
- 361
- article number
- 110317
- publisher
- Elsevier
- external identifiers
-
- scopus:85209540850
- ISSN
- 0168-1923
- DOI
- 10.1016/j.agrformet.2024.110317
- language
- English
- LU publication?
- yes
- id
- 82ca1a9c-0bc3-4094-a27b-43a0729f2aff
- date added to LUP
- 2025-02-20 15:20:45
- date last changed
- 2025-04-04 13:51:38
@article{82ca1a9c-0bc3-4094-a27b-43a0729f2aff,
abstract = {{<p>Many studies have underscored the impacts of drought on ecosystems, and some researchers reported the effects of accumulated soil moisture deficit (ASMD) on light use efficiency (LUE) in grassland. However, the potential effects of ASMD on gross primary productivity (GPP) and LUE for both cropland and forest ecosystems are still not understood. This study elucidated the effects of accumulated and lagged soil moisture deficit (ASMD and LSMD, respectively) on GPP and LUE in these two ecosystems by using observations from 10 cropland and 25 forest flux sites during drought years. The results showed that the effects of ASMD and LSMD on LUE/GPP for both cropland and forests obviously surpass the concurrent effects (CSMD). For cropland, the mean R<sup>2</sup> between CSMD/LSMD/ASMD with LUE were 0.22, 0.47, 0.56, respectively, and were 0.29, 0.54, 0.74 with GPP, respectively. For forest, the mean R<sup>2</sup> between CSMD/LSMD/ASMD with LUE were 0.21, 0.36, 0.46, respectively, and were 0.34, 0.63, and 0.65 with GPP, respectively. Additionally, the effects of ASMD and LSMD on LUE are more pronounced for cropland than for forests, and for both cropland and forest, the effect of ASMD is stronger than that of LSMD. This study underscores the crucial role of ASMD in influencing LUE and GPP for cropland and forests, thereby offering a theoretical foundation for incorporating ASMD into LUE models to enhance the accuracy of GPP simulations, especially during drought periods.</p>}},
author = {{Jiang, Zhuoyou and Zhou, Yanlian and Gao, Shang and Dong, Zhoutong and Wang, Yingying and Duan, Zheng and He, Wei and Liu, Yibo and Ju, Weimin}},
issn = {{0168-1923}},
keywords = {{Accumulated soil moisture deficit; Cropland; Forest; Gross primary productivity; Lagged soil moisture deficit; Light use efficiency}},
language = {{eng}},
publisher = {{Elsevier}},
series = {{Agricultural and Forest Meteorology}},
title = {{Stronger effects of accumulated soil moisture deficit on gross primary productivity and light use efficiency than lagged soil moisture deficit for cropland and forest}},
url = {{http://dx.doi.org/10.1016/j.agrformet.2024.110317}},
doi = {{10.1016/j.agrformet.2024.110317}},
volume = {{361}},
year = {{2025}},
}