WANG Cun-long1, LIU Hua-feng1, WANG Hong-jin1, ZHAO Xi-qiang 1, WANG Zeng-hui1, ZHAN Jin-cheng1
(Shandong Institute of Geological Survey, Jinan 250013, China)
Abstract: Global climate change and its impacts on the human face is one of the major environmental problems. A great increase in atmospheric CO2 concentration brings more and more serious environmental problems to human life. Soil organic carbon is an important part of the terrestrial ecosystem carbon pool. While its slight change has a direct impact on the greenhouse gas concentrations in the atmosphere. In this paper , in terms of the carbon data of multi purpose regional geochemical survey in 2003～2010 and the second soil survey of Shandong Province in the 1980s, it is shown that soil organic carbon at the depth of 1.0m accounts for 3.28% of SOCP, which shows " carbon sink "; carbon density is highest in paddy soil, and the second highest in Shajiang black soil, then lowest in coastal saline soil. Soil carbon sequestration potential is 1.02×109 t in the 0～1.0 m- depth soil in the study area, which means it can reduce the concentrations of atmospheric CO2 by 0.081%. Through the correlation analysis it is indicated that using organic fertilizer and N, P, K, Zn fertilizers, mineral fertilizer in the soil can improve soil organic carbon content and soil carbon sequestration. Meanwhile, the reason that makes soil carbon sequestration be destroyed is too much Cl . This study provides the scientific basis for remission of atmospheric CO2 concentration which leads to the increase of environmental pressure and improving China’s soil ecosystem carbon sequestration potential.
Key words: Lower Yellow River Basin; soil carbon library; fixing carbon and present situation; solid carbon potential; soil carbon reserve calculation
EARTH AND ENVIRONMENT Vol. 42, No.2, Tot No.298, 2014, Page 229-237
