Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China

Recent increases in atmospheric carbon dioxide (CO2) and temperature relieve their limitations on terrestrial ecosystem productivity, while nutrient availability constrains the increasing plant photosynthesis m...

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Autores principales:	Y.-W. Zhang, Y. Guo, Z. Tang, Y. Feng, X. Zhu, W. Xu, Y. Bai, G. Zhou, Z. Xie, J. Fang
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Environmental sciences GE1-350 Geology QE1-996.5
Acceso en línea:	https://doaj.org/article/12389c052dfd4e39ae4b2f4e7f951b5b
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spelling	oai:doaj.org-article:12389c052dfd4e39ae4b2f4e7f951b5b2021-11-17T12:27:09ZPatterns of nitrogen and phosphorus pools in terrestrial ecosystems in China10.5194/essd-13-5337-20211866-35081866-3516https://doaj.org/article/12389c052dfd4e39ae4b2f4e7f951b5b2021-11-01T00:00:00Zhttps://essd.copernicus.org/articles/13/5337/2021/essd-13-5337-2021.pdfhttps://doaj.org/toc/1866-3508https://doaj.org/toc/1866-3516<p>Recent increases in atmospheric carbon dioxide (<span class="inline-formula">CO<sub>2</sub></span>) and temperature relieve their limitations on terrestrial ecosystem productivity, while nutrient availability constrains the increasing plant photosynthesis more intensively. Nitrogen (N) and phosphorus (P) are critical for plant physiological activities and consequently regulate ecosystem productivity. Here, for the first time, we mapped N and P densities and concentrations of leaves, woody stems, roots, litter, and soil in forest, shrubland, and grassland ecosystems across China based on an intensive investigation at 4868 sites, covering species composition, biomass, and nutrient concentrations of different tissues of living plants, litter, and soil. Forest, shrubland, and grassland ecosystems in China stored 6803.6 Tg N, with 6635.2 Tg N (97.5 %) fixed in soil (to a depth of 1 m) and 27.7 (0.4 %), 57.8 (0.8 %), 71.2 (1 %), and 11.7 Tg N (0.2 %) in leaves, stems, roots, and litter, respectively. The forest, shrubland, and grassland ecosystems in China stored 2806.0 Tg P, with 2786.1 Tg P (99.3 %) fixed in soil (to a depth of 1 m) and 2.7 (0.1 %), 9.4 (0.3 %), 6.7 (0.2 %), and 1.0 Tg P (<span class="inline-formula"><i><</i></span> 0.1 %) in leaves, stems, roots, and litter, respectively. Our estimation showed that N pools were low in northern China, except in the Changbai Mountains, Mount Tianshan, and Mount Alta, while relatively higher values existed in the eastern Qinghai–Tibetan Plateau and Yunnan. P densities in vegetation were higher towards the southern and north-eastern part of China, while soil P density was higher towards the northern and western part of China. The estimated N and P density and concentration datasets, “Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China” (<a href="https://doi.org/10.5061/dryad.6hdr7sqzx">https://doi.org/10.5061/dryad.6hdr7sqzx</a>), are available from the Dryad digital repository (Zhang et al., 2021). These patterns of N and P densities could potentially improve existing earth system models and large-scale research on ecosystem nutrients.</p>Y.-W. ZhangY. GuoZ. TangY. FengX. ZhuW. XuY. BaiG. ZhouZ. XieJ. FangCopernicus PublicationsarticleEnvironmental sciencesGE1-350GeologyQE1-996.5ENEarth System Science Data, Vol 13, Pp 5337-5351 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Environmental sciences GE1-350 Geology QE1-996.5
spellingShingle	Environmental sciences GE1-350 Geology QE1-996.5 Y.-W. Zhang Y. Guo Z. Tang Y. Feng X. Zhu W. Xu Y. Bai G. Zhou Z. Xie J. Fang Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China
description	<p>Recent increases in atmospheric carbon dioxide (<span class="inline-formula">CO<sub>2</sub></span>) and temperature relieve their limitations on terrestrial ecosystem productivity, while nutrient availability constrains the increasing plant photosynthesis more intensively. Nitrogen (N) and phosphorus (P) are critical for plant physiological activities and consequently regulate ecosystem productivity. Here, for the first time, we mapped N and P densities and concentrations of leaves, woody stems, roots, litter, and soil in forest, shrubland, and grassland ecosystems across China based on an intensive investigation at 4868 sites, covering species composition, biomass, and nutrient concentrations of different tissues of living plants, litter, and soil. Forest, shrubland, and grassland ecosystems in China stored 6803.6 Tg N, with 6635.2 Tg N (97.5 %) fixed in soil (to a depth of 1 m) and 27.7 (0.4 %), 57.8 (0.8 %), 71.2 (1 %), and 11.7 Tg N (0.2 %) in leaves, stems, roots, and litter, respectively. The forest, shrubland, and grassland ecosystems in China stored 2806.0 Tg P, with 2786.1 Tg P (99.3 %) fixed in soil (to a depth of 1 m) and 2.7 (0.1 %), 9.4 (0.3 %), 6.7 (0.2 %), and 1.0 Tg P (<span class="inline-formula"><i><</i></span> 0.1 %) in leaves, stems, roots, and litter, respectively. Our estimation showed that N pools were low in northern China, except in the Changbai Mountains, Mount Tianshan, and Mount Alta, while relatively higher values existed in the eastern Qinghai–Tibetan Plateau and Yunnan. P densities in vegetation were higher towards the southern and north-eastern part of China, while soil P density was higher towards the northern and western part of China. The estimated N and P density and concentration datasets, “Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China” (<a href="https://doi.org/10.5061/dryad.6hdr7sqzx">https://doi.org/10.5061/dryad.6hdr7sqzx</a>), are available from the Dryad digital repository (Zhang et al., 2021). These patterns of N and P densities could potentially improve existing earth system models and large-scale research on ecosystem nutrients.</p>
format	article
author	Y.-W. Zhang Y. Guo Z. Tang Y. Feng X. Zhu W. Xu Y. Bai G. Zhou Z. Xie J. Fang
author_facet	Y.-W. Zhang Y. Guo Z. Tang Y. Feng X. Zhu W. Xu Y. Bai G. Zhou Z. Xie J. Fang
author_sort	Y.-W. Zhang
title	Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China
title_short	Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China
title_full	Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China
title_fullStr	Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China
title_full_unstemmed	Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China
title_sort	patterns of nitrogen and phosphorus pools in terrestrial ecosystems in china
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/12389c052dfd4e39ae4b2f4e7f951b5b
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Patterns of nitrogen and phosphorus pools in terrestrial ecosystems in China

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