Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Estimation of carbon sequestration in China’s forests induced by atmospheric wet nitrogen deposition using the principles of ecological stoichiometry
The worldwide development of industry and agriculture has generated noticeable increases in atmospheric nitrogen (N) deposition, significantly altering the global N cycle. These changes might affect the global carbon (C) cycle by enhancing forest C sequestration. Here, we used a series of datasets from eight typical forests along the north–south transect of eastern China (NSTEC). These datasets contained information on community structure, C and N concentrations in the soil and the organs (leaf, branch, stem, and fine-root) of 877 plant species, and atmospheric wet N deposition. Using the biomass weighting method, we scaled up the C:N ratios from the organ level to the ecosystem level, and evaluated the C sequestration rate (CSR _N ) in response to wet N deposition and N use efficiency (NUE) in China’s forests based on the principles of ecological stoichiometry. Our results showed that atmospheric wet N deposition had a modest impact on forest C storage. Specifically, mean CSR _N was estimated as 231 kg C ha ^−1 yr ^−1 (range: 32.7–507.1 kg C ha ^−1 yr ^−1 ), accounting for 2.1% of NPP and 4.6% of NEP at the ecosystem level. The NUE _eco of atmospheric N deposition ranged from 9.6−27.7 kg C kg ^−1 N, and increased with increasing latitude from subtropical to cold-temperate forests in China ( P < 0.05). This study provides a new approach for estimating the effect of atmospheric deposition on forest C sequestration based on the principles of ecological stoichiometry.
Estimation of carbon sequestration in China’s forests induced by atmospheric wet nitrogen deposition using the principles of ecological stoichiometry
The worldwide development of industry and agriculture has generated noticeable increases in atmospheric nitrogen (N) deposition, significantly altering the global N cycle. These changes might affect the global carbon (C) cycle by enhancing forest C sequestration. Here, we used a series of datasets from eight typical forests along the north–south transect of eastern China (NSTEC). These datasets contained information on community structure, C and N concentrations in the soil and the organs (leaf, branch, stem, and fine-root) of 877 plant species, and atmospheric wet N deposition. Using the biomass weighting method, we scaled up the C:N ratios from the organ level to the ecosystem level, and evaluated the C sequestration rate (CSR _N ) in response to wet N deposition and N use efficiency (NUE) in China’s forests based on the principles of ecological stoichiometry. Our results showed that atmospheric wet N deposition had a modest impact on forest C storage. Specifically, mean CSR _N was estimated as 231 kg C ha ^−1 yr ^−1 (range: 32.7–507.1 kg C ha ^−1 yr ^−1 ), accounting for 2.1% of NPP and 4.6% of NEP at the ecosystem level. The NUE _eco of atmospheric N deposition ranged from 9.6−27.7 kg C kg ^−1 N, and increased with increasing latitude from subtropical to cold-temperate forests in China ( P < 0.05). This study provides a new approach for estimating the effect of atmospheric deposition on forest C sequestration based on the principles of ecological stoichiometry.
Estimation of carbon sequestration in China’s forests induced by atmospheric wet nitrogen deposition using the principles of ecological stoichiometry
Jianxing Zhu (Autor:in) / Nianpeng He (Autor:in) / Jiahui Zhang (Autor:in) / Qiufeng Wang (Autor:in) / Ning Zhao (Autor:in) / Yanlong Jia (Autor:in) / Jianping Ge (Autor:in) / Guirui Yu (Autor:in)
2017
Aufsatz (Zeitschrift)
Elektronische Ressource
Unbekannt
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