globalchange  > 气候变化与战略
DOI: 10.1016/j.scitotenv.2020.136620
Title:
Levels and variations of soil organic carbon and total nitrogen among forests in a hotspot region of high nitrogen deposition
Author: Ma T.-Y.; Liu X.-Y.; Xu S.-Q.; Guo H.-R.; Huang H.; Hu C.-C.; Wu D.; Sun Z.-C.; Chen C.-J.; Song W.
Source Publication: Science of the Total Environment
ISSN: 489697
Publishing Year: 2020
Volume: 713
Language: 英语
Keyword: Atmospheric nitrogen pollution ; Forest ecosystem ; Nitrogen deposition ; Soil nitrogen status ; Soil organic carbon
Scopus Keyword: Climate change ; Ecosystems ; Forestry ; Nitrogen ; Organic carbon ; pH ; Soil moisture ; Atmospheric nitrogen ; Forest ecosystem ; Nitrogen deposition ; Soil nitrogen ; Soil organic carbon ; Soil pollution ; nitrogen ; organic carbon ; atmospheric deposition ; atmospheric pollution ; climate change ; climate effect ; ecosystem function ; environmental factor ; forest ecosystem ; forest soil ; human activity ; soil carbon ; soil nitrogen ; soil organic matter ; Article ; biogeochemistry ; chemical analysis ; China ; climate change ; correlation coefficient ; cropland ; effect size ; environmental factor ; environmental monitoring ; forest ; geographic distribution ; geostatistical analysis ; grassland ; nitrogen deposition ; nitrogen fixation ; precipitation ; priority journal ; soil acidification ; soil acidity ; soil analysis ; soil moisture ; soil property ; soil quality ; temperature ; vegetation ; China ; Jingjinji
English Abstract: Human activities have distinctly enhanced the deposition levels of atmospheric nitrogen (N) pollutants into terrestrial ecosystems, but whether and to what extents soil carbon (C) and N status have been influenced by elevated N inputs remain poorly understood in the ‘real’ world given related knowledge has largely based on N-addition experiments. Here we reported soil organic C (OC) and total N (TN) for twenty-seven forests along a gradient of N deposition (22.4–112.9 kg N/ha/yr) in the Beijing-Tianjin-Hebei (BTH) region of northern China, a global hotspot of high N pollution. Levels of soil TN in forests of the BTH region have been elevated compared with investigations in past decades, suggesting that long-term N deposition might cause soil TN increases. Combining with major geographical and environmental factors among the study forests, we found unexpectedly that soil moisture and pH values rather than N deposition levels were major regulators of the observed spatial variations of soil OC and TN contents. As soil moisture and pH values increased with mean annual precipitation and temperature, respectively, soil C and N status in forests of the BTH region might be more responsive to climate change than to N pollution. These evidence suggests that both N deposition and climate differences should be considered into managing ecosystem functions of forest resources in regions with high N pollution. © 2020 Elsevier B.V.
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Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/158389
Appears in Collections:气候变化与战略

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Affiliation: Institute of Surface-Earth System Science, Tianjin University, Tianjin, 300072, China

Recommended Citation:
Ma T.-Y.,Liu X.-Y.,Xu S.-Q.,et al. Levels and variations of soil organic carbon and total nitrogen among forests in a hotspot region of high nitrogen deposition[J]. Science of the Total Environment,2020-01-01,713
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