Effect of freezing and thawing on available phosphorus content of soil

The process of freeze-thaw not only directly affects the phosphorus cycle in non growing season, but also shows that the impact of cold winter and frequent freeze-thaw on the ecosystem will continue to the following growing season. This effect is closely related to soil properties, microbial activity and community structure, climate conditions, vegetation composition and management methods. However, due to the differences in research methods, many results about the effects of freeze-thaw on soil nitrogen and phosphorus cycle are quite different. After the freeze-thaw cycle, the content of available phosphorus in the two soils decreased, and the decreasing trend was Lou soil > arsenic sandstone.