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Assessing the contributions of sesquioxides and soil organic matter to aggregation in an Ultisol under long-term fertilization

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成果类型:
期刊论文
作者:
Peng, X.*;Yan, X.;Zhou, H.;Zhang, Y. Z.;Sun, H.
通讯作者:
Peng, X.
作者机构:
[Peng, X.; Yan, X.; Zhou, H.] Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China.
[Yan, X.; Zhang, Y. Z.] Hunan Agr Univ, Coll Resources & Environm, Changsha 410128, Hunan, Peoples R China.
[Peng, X.] Natl Engn & Technol Res Ctr Red Soil Improvement, Nanchang, Peoples R China.
[Sun, H.] Sichuan Univ, Dept Environm Sci, Chengdu 610065, Peoples R China.
通讯机构:
[Peng, X.] C
Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China.
语种:
英文
关键词:
Soil aggregation;Sesquioxides;Soil organic matter;Long-term fertilization;Ultisols
期刊:
Soil and Tillage Research
ISSN:
0167-1987
年:
2015
卷:
146
期:
PA
页码:
89-98
基金类别:
National Key Technology R&D Program of ChinaNational Key Technology R&D Program [2011BAD31B04, 2011BAD41B01]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41371235]; Innovation Program of Institute of Soil Science, CAS [ISSASIP1111]
机构署名:
本校为其他机构
院系归属:
资源环境学院
摘要:
In tropical and subtropical soils, sesquioxides and soil organic matter (SOM) are major binding agents for aggregates. However, the biotic and abiotic contributions to aggregation are often difficult to distinguish. In this study, we attempted to assess their contributions to aggregation separately, as indicated by aggregate size distribution and specific surface area (SSA). Our objectives were (i) to determine aggregate size distribution and SSA before and after removal of sesquioxides and SOM, and (ii) to assess the contributions of sesquioxides and SOM to soil aggregation. An oxide-rich Ult...

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