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Climate controls on nitrate dynamics and gross nitrogen cycling response to nitrogen deposition in global forest soils.
Elrys, Ahmed S; Desoky, El-Sayed M; Zhu, Qilin; Liu, Lijun; Yun-Xing, Wan; Wang, Chengzhi; Shuirong, Tang; Yanzheng, Wu; Meng, Lei; Zhang, Jinbo; Müller, Christoph.
Afiliación
  • Elrys AS; School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China; Soil Science Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt; Liebig Centre
  • Desoky EM; Botany Department, Faculty of Agriculture, Zagazig University, Zagazig 44511, Egypt.
  • Zhu Q; College of Tropical Crops, Hainan University, Haikou 570228, China.
  • Liu L; College of Tropical Crops, Hainan University, Haikou 570228, China.
  • Yun-Xing W; College of Tropical Crops, Hainan University, Haikou 570228, China.
  • Wang C; College of Tropical Crops, Hainan University, Haikou 570228, China.
  • Shuirong T; School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China.
  • Yanzheng W; College of Tropical Crops, Hainan University, Haikou 570228, China.
  • Meng L; School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China. Electronic address: menglei@hainanu.edu.cn.
  • Zhang J; School of Breeding and Multiplication (Sanya Institute of Breeding and Multiplication), Hainan University, Sanya 572025, China; College of Tropical Crops, Hainan University, Haikou 570228, China; Liebig Centre for Agroecology and Climate Impact Research, Justus Liebig University, Germany; School of
  • Müller C; Liebig Centre for Agroecology and Climate Impact Research, Justus Liebig University, Germany; Institute of Plant Ecology, Justus Liebig University Giessen, Heinrich-Buff-Ring 26, 35392 Giessen, Germany; School of Biology and Environmental Science and Earth Institute, University College Dublin 4, Ire
Sci Total Environ ; 920: 171006, 2024 Apr 10.
Article en En | MEDLINE | ID: mdl-38369137
ABSTRACT
Understanding the patterns and controls regulating nitrogen (N) transformation and its response to N enrichment is critical to re-evaluating soil N limitation or availability and its environmental consequences. Nevertheless, how climatic conditions affect nitrate dynamics and the response of gross N cycling rates to N enrichment in forest soils is still only rudimentarily known. Through collecting and analyzing 4426-single and 769-paired observations from 231 15N labeling studies, we found that nitrification capacity [the ratio of gross autotrophic nitrification (GAN) to gross N mineralization (GNM)] was significantly lower in tropical/subtropical (19%) than in temperate (68%) forest soils, mainly due to the higher GNM and lower GAN in tropical/subtropical regions resulting from low C/N ratio and high precipitation, respectively. However, nitrate retention capacity [the ratio of dissimilatory nitrate reduction to ammonium (DNRA) plus gross nitrate immobilization (INO3) to gross nitrification] was significantly higher in tropical/subtropical (86%) than in temperate (54%) forest soils, mainly due to the higher precipitation and GNM of tropical/subtropical regions, which stimulated DNRA and INO3. As a result, the ratio of GAN to ammonium immobilization (INH4) was significantly higher in temperate than in tropical/subtropical soils. Climatic rather than edaphic factors control heterotrophic nitrification rate (GHN) in forest soils. GHN significantly increased with increasing temperature in temperate regions and with decreasing precipitation in tropical/subtropical regions. In temperate forest soils, gross N transformation rates were insensitive to N enrichment. In tropical/subtropical forests, however, N enrichment significantly stimulated GNM, GAN and GAN to INH4 ratio, but inhibited INH4 and INO3 due to reduced microbial biomass and pH. We propose that temperate forest soils have higher nitrification capacity and lower nitrate retention capacity, implying a higher potential risk of N losses. However, tropical/subtropical forest systems shift from a conservative to a leaky N-cycling system in response to N enrichment.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos de Amonio / Nitrógeno Idioma: En Revista: Sci Total Environ Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Compuestos de Amonio / Nitrógeno Idioma: En Revista: Sci Total Environ Año: 2024 Tipo del documento: Article Pais de publicación: Países Bajos