Regulation of biophysical drivers on carbon and water fluxes over a warm-temperate plantation in northern China

Peiyang Yu; Yingjie Zhang; Peirong Liu; Jinsong Zhang; Wanli Xing; Xiaojuan Tong; Jingru Zhang; Ping Meng

doi:10.1016/j.scitotenv.2023.167408

Regulation of biophysical drivers on carbon and water fluxes over a warm-temperate plantation in northern China

Sci Total Environ. 2024 Jan 10:907:167408. doi: 10.1016/j.scitotenv.2023.167408. Epub 2023 Oct 10.

Authors

Peiyang Yu¹, Yingjie Zhang², Peirong Liu¹, Jinsong Zhang³, Wanli Xing⁴, Xiaojuan Tong⁵, Jingru Zhang¹, Ping Meng³

Affiliations

¹ School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China.
² School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China. Electronic address: yingjiezhang@bjfu.edu.cn.
³ Key Laboratory of Tree Breeding and Cultivation of State Forestry Administration, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China; Henan Xiaolangdi Forest Ecosystem National Observation and Research Station, Jiyuan 454650, China.
⁴ Academy of Arts and Design, Beijing City University, Beijing 101309, China.
⁵ School of Ecology and Nature Conservation, Beijing Forestry University, Beijing 100083, China. Electronic address: tongxj@bjfu.edu.cn.

PMID: 37827323
DOI: 10.1016/j.scitotenv.2023.167408

Abstract

Plantations have great potential for carbon sequestration and play a vital role in the water cycle. However, it is challenging to accurately estimate the carbon and water fluxes of plantations, and the impact of biophysical drivers on the coupling of carbon and water fluxes is not well understood. Thus, we modified the phenology module of the Biome-BGC model and optimized the parameters with the aim of simulating the gross primary productivity (GPP), evapotranspiration (ET) and water use efficiency (WUE) of a warm-temperate plantation in northern China from 2009 to 2020. Photosynthetically active radiation (PAR) showed significant positive correlations on GPP and WUE during the first stage of the growing season (S1: from early April to late July). Active accumulated temperature (T_aa) mainly controlled the changes in GPP and ET during the second stage (S2: between the end of July and early November). Throughout the growing season, soil water content dominated daily GPP and WUE, whereas T_aa regulated ET. The optimized Biome-BGC model performed better than the original model in simulating GPP and ET. Compared with the values simulated by the original model, root mean square error decreased by 7.89 % and 15.97 % for the simulated GPP and ET, respectively, while the determination coefficient increased from 0.77 to 0.81 for simulated GPP and from 0.51 to 0.62 for simulated ET. The results of this study demonstrated that the optimized model more accurately assessed carbon sequestration and water consumption in plantations.

Keywords: Biome-BGC; Evapotranspiration; Gross primary productivity; Plantation; Water use efficiency.

MeSH terms

Carbon Cycle
Carbon* / analysis
China
Ecosystem
Seasons
Water*

Substances

Water
Carbon