2009•Bulletin of Soil and Water ConservationRequires access
Effects of Freezing-thawing on Soil Water-stable Aggregates in Fresh Marsh
Yushu Zhang
Open publisher page 1 citations
Abstract
Soil water-stable macro-aggregates(0.25 mm) are an important characteristic index of soil erosion and soil quality.The effects of freezing-thawing on the content of soil water-stable macro-aggregates in Sanjiang Plain wetlands were studied under different soil water contents,numbers of freezing-thaw cycles,and compaction treatments by indoor incubation experiment.Results showed that the content of soil water-stable macro-aggregate was influenced by the freezing-thawing.The effects of freezing-thawing frequency were more significant compared with compaction and initial soil water content.Before the 4th freezing-thaw cycle,the content of soil water-stable macro-aggregates under different treatments increased with the increasing of freezing-thawing frequency.After the 4th freezing-thaw cycle,however,the content at high soil water content did not change obviously and increased slightly.