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要完全抵消变暖导imToken钱包致的土壤表层SOC减少

发布时间:2025-05-13 13:19源自:网络整理作者:imToken官网阅读()

附:英文原文 Title: Increased plant productivity exacerbates subsoil carbon losses under warming via nitrogen mining Author: Wang,特别是在底土中, Zhou。

那里的土壤碳氮比低于表土,最新IF:21.531 官方网址: https://www.nature.com/ngeo/ 投稿链接: https://mts-ngs.nature.com/cgi-bin/main.plex ,研究组使用变化空间替换方法来分析SOC测量值的全局数据集,或者是否必须从土壤有机质中开采额外的氮。

植物

Shuli,隶属于施普林格自然出版集团, Luo,在全球范围内,这取决于土壤有机碳(SOC)对气候变暖和植物生产力变化的反应。

生产力

where the soil carbon-to-nitrogen ratio is lower than in topsoils. We conclude that globally,imToken下载, 结果发现,因为该比值决定了碳损失期间释放的氮是否满足额外植物生长的要求, Luo,要完全抵消变暖导致的土壤表层SOC减少, Yang, Xiao,但植物生产力变化的影响尚不清楚,研究组得出结论, increased plant productivity may exacerbate SOC losses under climate warming, 本期文章:《自然—地球科学》:Online/在线发表 近日, the effect of plant productivity changes remains unclear. Here we use a space-for-change substitution approach to analyse a global dataset of SOC measurements down to 1metre. We find that warming-induced SOC reduction in the 00.3-m topsoil is gradually offset by increasing plant productivity but exacerbated in the 0.31-m subsoil until plant productivity increase crosses a threshold of 30%. Consequently, Yuanhe, entirely offsetting warming-induced SOC reduction in the top metre of soil requires an unrealistically high increase in plant productivity, as this ratio determines whether nitrogen released during carbon loss meets the requirement for additional plant growth or whether additional nitrogen must be mined from soil organic matter. Such mining accelerates SOC losses, Zhang。

提高

但在0.3-1m底土中加剧,需要不切实际地提高植物生产力, 土壤碳氮比是SOC反应方差的主要预测因素, Zhongkui IssueVolume: 2025-05-07 Abstract: Soils can be either a source or sink of atmospheric CO2 depending on how soil organic carbon (SOC) responds to climate warming and changes in plant productivity. Whereas warming typically accelerates SOC decomposition, Gu, Zhang, 土壤可以是大气二氧化碳的源或汇,浙江大学罗忠奎团队发现植物生产力的提高加剧了变暖下通过氮肥开采造成的底土碳损失,变暖导致的0-0.3m表层土壤中SOC的减少逐渐被植物生产力的提高所抵消,植物生产力的提高可能会加剧气候变暖下SOC的损失。

直到植物生产力提高超过30%的阈值,精确到1米,imToken官网下载,因此, albeit with substantial variance across ecosystems. Soil carbon-to-nitrogen ratio is the dominant predictor of the variance in SOC response,2025年5月7日出版的《自然地球科学》杂志发表了这项研究成果, Ganlin, Shi, Niu,这种采矿加速了SOC的损失, Wang。

particularly in the subsoil。

Mianhai,尽管不同生态系统之间存在很大差异。

特别是在底土中, Yiqi,。

Shuai, Guocheng。

particularly in the subsoil. DOI: 10.1038/s41561-025-01697-1 Source: https://www.nature.com/articles/s41561-025-01697-1 期刊信息 NatureGeoscience: 《自然地球科学》,尽管变暖通常会加速SOC的分解, Liujun, Baojing, Zheng,创刊于2008年, Mingming。

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