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DOI | 10.1016/j.agrformet.2024.109998 |
Biophysical control of daytime and nighttime soil respiration during growing and non-growing seasons in a temperate deciduous forest | |
发表日期 | 2024 |
ISSN | 0168-1923 |
EISSN | 1873-2240 |
起始页码 | 350 |
卷号 | 350 |
英文摘要 | Accurate prediction of soil respiration (Rs) under climate change requires a comprehensive understanding of the dominant factors. However, the combined effects of multiple biophysical factors on long-term Rs remain uncertain due to the paucity of direct observations. Here, we developed a new method termed PLSR-lag, which integrates time lags and nonlinearity between variables into the Projection to Latent Structures Regression (PLSR) model. We employed PLSR-lag to explore the impacts of biophysical variables on Rs using 10-year field observations. Our results demonstrated a more significant correlation between nocturnal Rs and both photosynthetically active radiation (PAR) and surface soil temperature (STP10) during growing season. Soil surface temperature (STP10) dominates Rs throughout the year, while PAR, leaf area index (LAI), and soil surface moisture (SWC10) modulate Rs during the growing season only. PLSR-lag significantly enhanced the explanatory power of growing-season Rs by 13-19 % compared to the original PLSR method. These findings provide evidence that accounting for the delayed response of Rs to photosynthetic proxies (such as PAR), alongside the nonlinear response to soil moisture, would improve model accuracy. This improvement would also enhance our understanding of soil carbon cycle in response to climate and environmental changes. |
英文关键词 | Soil respiration; Biophysical factors; Time lag; Nonlinearity; Growing season and non-growing season; Projection to Latent Structures Regression (PLSR) model |
语种 | 英语 |
WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
WOS类目 | Agronomy ; Forestry ; Meteorology & Atmospheric Sciences |
WOS记录号 | WOS:001225737100001 |
来源期刊 | AGRICULTURAL AND FOREST METEOROLOGY
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/297200 |
作者单位 | Wuhan University; Wuhan University |
推荐引用方式 GB/T 7714 | . Biophysical control of daytime and nighttime soil respiration during growing and non-growing seasons in a temperate deciduous forest[J],2024,350. |
APA | (2024).Biophysical control of daytime and nighttime soil respiration during growing and non-growing seasons in a temperate deciduous forest.AGRICULTURAL AND FOREST METEOROLOGY,350. |
MLA | "Biophysical control of daytime and nighttime soil respiration during growing and non-growing seasons in a temperate deciduous forest".AGRICULTURAL AND FOREST METEOROLOGY 350(2024). |
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