| Soil carbon and nitrogen storage of different reclamation years in salinized wasteland in arid region |
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| DOI：10.7606/j.issn.1000-7601.2017.03.41 |
| Key Words: salinized wasteland farmland reclaimed from salinized wasteland soil organic carbon soil total nitrogen soil organic carbon storage |
| Author Name | Affiliation | | LEI Jun | Shihezi University/Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi, Xinjiang 832003, China | | ZHANG Feng-hua | Shihezi University/Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi, Xinjiang 832003, China | | LIN Hai-rong | Shihezi University/Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi, Xinjiang 832003, China | | HAN Chun-li | Shihezi University/Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi, Xinjiang 832003, China | | ZHAO Rui-hai | Shihezi University/Key Laboratory of Oasis Ecology Agriculture of Xinjiang Construction Crops, Shihezi, Xinjiang 832003, China |
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| Abstract: |
| Salinization soil of cotton farmland reclaimed from salinized wasteland in the north area of Tianshan Mountain with three reclamation year: 3 years, 8 years and 15 years, was chosen and salinized wasteland was the control. Soil organic carbon and total nitrogen, and carbon storage in 0～10, 10～20, 20～40, 40～60 cm and 60～100 cm were measured. Results showed that soil organic carbon and total nitrogen content in 0～100 cm of cotton field increased with years of reclamation in salinized wasteland. There was no significant difference in total nitrogen content among salinized wasteland and reclaimed farmland with different years of reclamation. Soil organic carbon and total nitrogen content decreased with soil depth in both reclaimed cotton farmland and salinized wasteland. In salinized wasteland, soil organic carbon and total nitrogen content in 0～40 cm soil layer were significantly higher than those below 40cm soil layer. Soil C/N in reclaimed farmland increased with years of reclamation. Soil C/N in salinized wasteland and reclaimed farmland decreased with soil depth. The difference of soil C/N in salinized wasteland and reclaimed farmland was insignificant. Soil organic carbon storage in reclaimed cotton farmland decreased at first and then increased with reclamation years. In conclusion, soil organic carbon and total nitrogen content of cotton field increased with years of reclamation in salinized wasteland. However, soil organic carbon storage showed a trend of decrease-increase with reclamation years. Soil organic carbon and total nitrogen content in salinized wasteland and reclamation farmland decreased with soil depth increasing. |
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