To understand variations in soil properties and the process of carbon uptake and store in arid areas under land reclamation interference

this paper was mainly through exploring the impact of reclamation age on physicochemical properties and soil inorganic carbon (SIC) in a depth of 0-200 cm soil profiles. Fubei farm of Sangong river catchment

a typical region with different reclamation history lands in Xinjiang province

was act as the study area. Soil profiles of lands in different reclamation years were used to analyze the variation of soil pH values

soil salt content and SIC. Our results showed that: (1)Soil pH enhanced with the increase of soil depth in farm lands. Besides

as the reclamation age extension

it was significantly decreased in 0-60 cm (P<0.05) but increased in 60-140 cm and 140-200 cm soil profiles. Soil salinity was accumulated in top soils that salt content distributed as a type of "S" in soil profiles. With the reclamation age extending

the accumulation layer of soil salt went down gradually and the average value of salt content in each section decreased. It indicated that the extension of cultivation history contributed to moving salt and alkali. (2)The values of SIC content and storage in 0-60 cm were significant less than those in 60-140 cm (P<0.05) and those in 140-200 cm soil profile (P<0.05). The percentage of SIC ascended in vertical direction. SIC content

SIC storage and the percentage of SIC in 0-60 cm increased after first decreased and then decreased again with the reclamation age extending. Comparing with that in original lands

SIC storage in 0-60 cm of fifty years reclamation age decreased by 55% and that in 0-200 cm increased by 11.74 kg/m2 and the percentage of SIC also decreased by 1.28%. (3)The significantly influence of reclamation age on soil pH

salt and SIC were in different soil depth

respectively

in 0-60 cm

0-140 cm and 0-200 cm.