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Changes in Water Stability of Soil Aggregates in A Solar Greenhouse in Different Planted Years and Their Relationship to Iron Oxide


Affiliations
1 Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang - 110016, China
2 College of Land and Environment, Shenyang Agricultural University, Shenyang - 110866, China
 

The distribution and stability of soil aggregates and its relation to iron oxide during different plantation years are studied in a solar greenhouse. Soil samples were obtained from a vetatable bed within a greenhouse in Xinmin (Liaoning, China). The composition, water stability and percentage of aggregate destruction, as well as variations in different forms of iron oxides were evaluated at 5 time points (0, 2, 5, 8 and 16 years). Soil from a dry land in an open field was also collected for comparison. The quantity and water stability of >0.25 mm soil aggregates from 2 and 5 years were lower than those in the soil from the open field. These parameters significantly increased after five years. The contents of non-free iron oxides decreased under greenhouse cultivation, resulting in reduced aggregate stability. Free iron oxides were positively associated with >2 mm aggregates. Complex iron oxides were positively correlated with 2–0.25 mm and 0.25–0.053 mm aggregates but negatively correlated with <0.053 mm aggregates.

Keywords

Iron Oxide, Soil Aggregate, Soil Cementation Process, Solar Greenhouse, Water Stability.
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  • Changes in Water Stability of Soil Aggregates in A Solar Greenhouse in Different Planted Years and Their Relationship to Iron Oxide

Abstract Views: 384  |  PDF Views: 129

Authors

Yin Yan
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang - 110016, China
Zhong-Jian Pei
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang - 110016, China
Feng-Ming Xi
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang - 110016, China
Cheng-Hua Liang
College of Land and Environment, Shenyang Agricultural University, Shenyang - 110866, China
Jiao-Yue Wang
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang - 110016, China
Long-Fei Bing
Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang - 110016, China

Abstract


The distribution and stability of soil aggregates and its relation to iron oxide during different plantation years are studied in a solar greenhouse. Soil samples were obtained from a vetatable bed within a greenhouse in Xinmin (Liaoning, China). The composition, water stability and percentage of aggregate destruction, as well as variations in different forms of iron oxides were evaluated at 5 time points (0, 2, 5, 8 and 16 years). Soil from a dry land in an open field was also collected for comparison. The quantity and water stability of >0.25 mm soil aggregates from 2 and 5 years were lower than those in the soil from the open field. These parameters significantly increased after five years. The contents of non-free iron oxides decreased under greenhouse cultivation, resulting in reduced aggregate stability. Free iron oxides were positively associated with >2 mm aggregates. Complex iron oxides were positively correlated with 2–0.25 mm and 0.25–0.053 mm aggregates but negatively correlated with <0.053 mm aggregates.

Keywords


Iron Oxide, Soil Aggregate, Soil Cementation Process, Solar Greenhouse, Water Stability.

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DOI: https://doi.org/10.18520/cs%2Fv115%2Fi3%2F523-528