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Groundwater was monitored to investigate its hydrochemical variation and possible influencing factors from April, 2007 to May, 2009 at the inlet (D1) and outlet (S2) of Qingmuguan subterranean river in Chongqing, China. The response of the subterranean river discharge to rainfall events was very fast and dramatic, as the water level rising suddenly and dropping sharply with rainfall amount in the...
Snowfall is a general natural phenomenon in winter-spring alternate season in northeast of China. Snow was melt with the increase of temperature, i.e. freezing-thawing alternations affects soil properties. Static chamber technique was used to monitor nitrous oxide (N2O) flux from black soils in a snowfall process. The fertilization treatments are none (CK), 150 kg N ha-1 (N1), 300 kg N ha-1 (N2) and...
Based on more than 260 direct N2O emission fluxes in 93 published Chinese and English journal papers from 31 studying sites (including data from our own study), N2O emission fluxes from various land uses/covers (arable lands, forests, grasslands, swamps and marshes, riparian areas and freshwaters) were compiled and analyzed. Results showed that the annual N2O emissions fluxes ranged from 0.14 to 54...
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