The organic carbon (SOC) and inorganic carbon (SIC) compose of soil carbon in terrestrial ecosystems, the amount of SIC in the earth surface is about half of the SOC amount (1 500 Pg), showing that its played important role in global carbon balance, but at present more studies were on the SOC compared to SIC. The determination of the relation in SOC and soil physical-chemical is meaningful and necessary for assessing carbon sequestration. In order to analyses the relationship among soil physical-chemical properties and SOC content, the data from Xinjiang Autonomous Region in northwestern China was collected, and analyzed using correlation and regression method. The finding is that, the SOC has significantly positive correlations with soil nutrients, cation exchange capacity, while soil pH and bulk density has significantly negative correlation with SOC. In addition, SOC and SIC was inversely related. These findings suggest that the processes governing the dynamics of SOC is complex. The differ among eco-regions and strongly interact in land use, farming systems and farming management practices. There are few reliable estimates of the SOC content and SIC content in the soils. Therefore, in the future, we should pay more attention to the relation between SOC and SIC.
Xu Weiwei
,
Qiao Mu
. Soil Carbon Contents in Relation to Soil Physicochemical Properties in Arid Regions of China[J]. Journal of Desert Research, 2014
, 34(6)
: 1558
-1561
.
DOI: 10.7522/j.issn.1000-694X.2013.00311
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