Energy and CO2 fluxes in the early stage development of reclaimed and unreclaimed post-mining areas

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60077344%3A_____%2F25%3A00635606" target="_blank" >RIV/60077344:_____/25:00635606 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11310/25:10489154

Výsledek na webu

<a href="https://www.sciencedirect.com/science/article/pii/S2665972724002150?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2665972724002150?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.indic.2024.100547" target="_blank" >10.1016/j.indic.2024.100547</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Energy and CO2 fluxes in the early stage development of reclaimed and unreclaimed post-mining areas

Popis výsledku v původním jazyce

The carbon exchange in post-mining areas and the impact of various restoration practices-(i) reclaimed (alder plantation on leveled microtopography in 2019) and (ii) unreclaimed (spontaneous development on wave-like microtopography)- on carbon and energy fluxes remains poorly understood. To address this gap, we conducted the first direct measurements of net ecosystem exchange (NEE), latent heat (LE), and sensible heat (H) using paired eddy covariance towers at both reclaimed and unreclaimed sites during the growing seasons of 2020, 2021, and 2023 in the early stage of succession in Czechia. Our novel results show that early post-coal mining sites were net sources of CO2 but became carbon sinks on a monthly scale within four years, highlighting the rapid ecosystem recovery at both sites. Significant differences in NEE, gross primary production (GPP), ecosystem respiration (Reco), and LE were observed between the two sites. Initially (2020 and 2021), the effect of alder seedlings was negligible. Differences in NEE and LE were mainly caused by higher emissions (Reco) at the unreclaimed site due to lower soil bulk density and higher runoff at the reclaimed site due to compacted soil, both influenced by heavy summer rainfall. By 2023, alder growth (GPP) became the primary factor differentiating the two sites. Climatic variables influenced fluxes similarly at both sites, although correlations were stronger at the unreclaimed site. Our findings suggest that natural succession can lead to CO2 sinks comparable to alder plantations, offering a practical alternative for post-mining land restoration in Central Europe.

Název v anglickém jazyce

Energy and CO2 fluxes in the early stage development of reclaimed and unreclaimed post-mining areas

Popis výsledku anglicky

The carbon exchange in post-mining areas and the impact of various restoration practices-(i) reclaimed (alder plantation on leveled microtopography in 2019) and (ii) unreclaimed (spontaneous development on wave-like microtopography)- on carbon and energy fluxes remains poorly understood. To address this gap, we conducted the first direct measurements of net ecosystem exchange (NEE), latent heat (LE), and sensible heat (H) using paired eddy covariance towers at both reclaimed and unreclaimed sites during the growing seasons of 2020, 2021, and 2023 in the early stage of succession in Czechia. Our novel results show that early post-coal mining sites were net sources of CO2 but became carbon sinks on a monthly scale within four years, highlighting the rapid ecosystem recovery at both sites. Significant differences in NEE, gross primary production (GPP), ecosystem respiration (Reco), and LE were observed between the two sites. Initially (2020 and 2021), the effect of alder seedlings was negligible. Differences in NEE and LE were mainly caused by higher emissions (Reco) at the unreclaimed site due to lower soil bulk density and higher runoff at the reclaimed site due to compacted soil, both influenced by heavy summer rainfall. By 2023, alder growth (GPP) became the primary factor differentiating the two sites. Climatic variables influenced fluxes similarly at both sites, although correlations were stronger at the unreclaimed site. Our findings suggest that natural succession can lead to CO2 sinks comparable to alder plantations, offering a practical alternative for post-mining land restoration in Central Europe.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10511 - Environmental sciences (social aspects to be 5.7)

Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2025

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Environmental and Sustainability Indicators

ISSN

2665-9727

e-ISSN

2665-9727

Svazek periodika

25

Číslo periodika v rámci svazku

February

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

19

Strana od-do

100547

Kód UT WoS článku

001371793800001

EID výsledku v databázi Scopus

2-s2.0-85210369341