NDLI: Impacts of anthropogenic activities on weathering and carbon fluxes: a case study in the Xijiang River basin, southwest China

Content Provider	Springer Nature Link
Author	Yu, Shi He, Shiyi Sun, Ping’an Pu, Junbing Huang, Jie Luo, Huixian Li, Yongshan Li, Rui Yuan, Yaqiong
Copyright Year	2016
Abstract	Monthly hydrogeochemical and discharge values were collected in the middle and upper reaches of the Xijiang River basin from April 2011 to March 2012 for the purpose of assessing the impact of anthropogenic activities on geological carbon sinks. The results of this study show that (1) the main ions in river water were influenced by different natural conditions and anthropogenic activities; (2) in a hydrological year, weathering fluxes of dissolved inorganic carbon (DIC) were 50.00 × 10$^{8}$, 1.52 × 10$^{8}$, and 1.79 × 10$^{8}$ kg CO$_{2}$ in the Wuzhou, Zhaoping, and Yangshuo transects, respectively; and furthermore, DIC$_{carbonate acid}$ (carbon flux caused by carbonic acid) were 37.71 × 10$^{8}$, 1.31 × 10$^{8}$, and 1.56 × 10$^{8}$ kg CO$_{2}$, respectively, which represents approximately 31.56, 10.15, and 15.29 g CO$_{2}$ m$^{−2}$ in the monitoring period; (3) the carbon flux from the participation of allogenic acid (such as sulfuric acid or nitric acid) in carbonate rock weathering was obvious, which must be eliminated from the calculation of the net carbon sink in carbonate rock weathering because it would be released into the atmosphere as a carbon source; and (4) in the geological processes, there was a clearly carbon sink loss caused by anthropogenic activities in various ways, which is attributed to the addition of nitric acid and sulfuric acid, such as through agricultural and industrial activities, and hydropower stations.
Starting Page	1
Ending Page	11
Page Count	11
File Format	PDF
ISSN	18666280
Journal	Environmental Earth Sciences
Volume Number	75
Issue Number	7
e-ISSN	18666299
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-03-28
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Anthropogenic activities Rock weathering DIC$_{carbonate acid}$ DIC$_{nitric acid + sulfuric acid}$ Net carbon sink Geology Hydrology/Water Resources Geochemistry Environmental Science and Engineering Terrestrial Pollution Biogeosciences
Content Type	Text
Resource Type	Article
Subject	Global and Planetary Change Earth-Surface Processes Soil Science Environmental Chemistry Pollution Geology Water Science and Technology

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