Long‐Term Effects of Freeze–Thaw Events on Ecosystem Carbon Exchange
凍結融解現象が生態系炭素交換に与える長期的影響 (AI 翻訳)
Qingfeng Xu, Kai Guo, Jintao Zhao, Chunjing Zhao, Yinan Wang, Fengying Jin
🤖 gxceed AI 要約
日本語
本研究は、10年以上にわたる24の渦相関タワーの連続測定データを用いて、凍結融解サイクルが生態系の正味炭素交換（NEE）と生態系呼吸（RE）に与える影響を定量化した。凍結融解イベント中の炭素フラックスの変化と、それに対する生態系の抵抗性を評価し、年平均気温や標高が主要な駆動要因であることを明らかにした。
English
This study uses over a decade of continuous measurements from 24 eddy-covariance towers to quantify how freeze-thaw cycles affect net ecosystem exchange (NEE) and ecosystem respiration (RE). It assesses the resistance of these carbon fluxes to freeze-thaw disturbances and identifies mean annual temperature and elevation as key drivers.
Unofficial AI-generated summary based on the public title and abstract. Not an official translation.
📝 gxceed 編集解説 — Why this matters
日本のGX文脈において
この研究は凍結融解による炭素動態変調のメカニズムを解明しており、日本の高山帯や寒冷地域における炭素収支予測に示唆を与える。ただし、GX政策や企業開示との直接的な関連は薄い。日本読者に対しては、気候変動適応策の基礎知見として位置づけられる。
In the global GX context
This paper provides mechanistic insights into how freeze-thaw cycles modulate carbon dynamics, relevant for understanding carbon budgets in cold regions globally. However, it has limited direct application to corporate GX disclosure or transition finance. It may inform climate adaptation science.
👥 読者別の含意
🔬研究者:Provides empirical evidence on freeze-thaw impacts on carbon fluxes, useful for ecosystem modelers and climate scientists.
📄 Abstract（原文）
ABSTRACT Freezing–thawing cycle (FTC) event plays a significant role in the regions with relative higher altitude and latitude, which is judged based on soil temperature. It affects soil environment and ecosystem productivity by altering soil physical structure, including physicochemical properties and water phase changes. Drawing on more than a decade of continuous measurements from 24 eddy‐covariance towers, we quantified how freeze–thaw cycles affect net ecosystem exchange (NEE) and ecosystem respiration (RE) and assessed the capacity of these carbon fluxes to withstand such events. The average percentile of ecosystem NEE in the first, middle, and last three stages of freeze–thaw events is 66.57%, 61.77%, and 57.21%, respectively. Prior to the freeze–thaw event, ecosystem respiration accounted for 28.07% of the reference level; during the event, this proportion declined to 24.38%, whereas it subsequently rose to 31.75% after the freeze–thaw disturbance. Resistance denotes an ecosystem's ability to preserve its functional stability throughout a freeze–thaw cycle. It is quantified as the ratio of the change in ecosystem carbon exchange before and during the freeze–thaw event to the corresponding change in soil temperature. Mean annual temperature (MAT), duration of freeze–thaw events, and elevation emerged as the primary drivers governing the resistance of both NEE and RE. Collectively, our results underscore how freeze–thaw cycles modulate carbon dynamics and why this interaction merits heightened attention under a changing climate.
🔗 Provenance — このレコードを発見したソース
- semanticscholar https://doi.org/10.1002/ece3.73222first seen 2026-06-29 08:46:57
🔔 こうした論文の新着を逃したくない方は キーワードアラート に登録（無料・3キーワードまで）。
gxceed は公開メタデータに基づく研究支援データセットです。要約・翻訳・解説は AI 支援で生成されています。 最終的な解釈・検証は利用者が原典資料に基づいて行うことを前提とします。