Arid
DOI10.1016/j.catena.2016.10.021
Variation of soil aggregation and intra-aggregate carbon by long-term fertilization with aggregate formation in a grey desert soil
Jiang, Maibo1,2,3; Wang, Xihe1; Liusui, Yunhao2; Han, Chao2; Zhao, Chengyi3; Liu, Hua1
通讯作者Zhao, Chengyi ; Liu, Hua
来源期刊CATENA
ISSN0341-8162
EISSN1872-6887
出版年2017
卷号149页码:437-445
英文摘要

A long-term field experiment was established in 1990 to evaluate the impact of mineral fertilizer (N and NPK) and organic material (manure and crop-residues) application on soil aggregation and organic carbon (C) accumulation in an intensively cultivated grey desert soil in northwestern China. The long-term addition of organic materials with balanced inorganic NPK inputs significantly increased the mass proportion of macroaggregates from 10% in the CK treatment to 34% and 24% in the 1.5MNPK and SNPK treatments (the application of inorganic NPK combined with organic sheep manure and the return of crop residues to the field, respectively). In contrast, the addition of inorganic fertilizer (the N and NPK treatments) had no obvious effect in promoting the percentage of macroaggregates. The application of inorganic fertilizer and abandonment (the CK0 treatment) only sustained the soil organic carbon (SOC) content. However, the SOC contents were significantly increased by 197% and 19% in the 1.5MNPK and SNPK treatments, respectively, relative to the CK treatment over a 24-year period. Amending the soils with N and NPK mainly increased the organic C concentrations in the silt + clay fraction. In contrast, the application of manure accelerated the accumulation of organic C in all of the aggregate fractions, particularly by increasing the amount of C in the fine intra-aggregate particulate organic matter (iPOM) fraction rather than the coarse iPOM or the silt + clay subfraction. The organic C concentration in the silt + clay fraction was significantly correlated with the mass proportion of macroaggregates (R-2 = 0.9488, P < 0.01), and with the ratio of macroaggregates to microaggregates (R-2 = 0.9477, P < 0.01). These results indicated that macroaggregates and the silt + clay fraction were more sensitive to fertilization in the grey desert soils. We consider that increases in the organic C concentrations in the silt + clay fraction and shifts in the stored C towards microaggregates may play important roles in soil aggregation and SOC sequestration in grey desert soils. (C) 2016 Elsevier B.V. All rights reserved.


英文关键词Long-term fertilization experiment Carbon sequestration Soil aggregates Particulate organic matter Grey desert soils
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000390733300043
WOS关键词SANDY-LOAM SOIL ; ORGANIC-MATTER ; CROPPING SYSTEMS ; NO-TILLAGE ; PHYSICAL-PROPERTIES ; MANURE APPLICATIONS ; NORTHWEST CHINA ; LOESS PLATEAU ; 2 OXISOLS ; RED SOIL
WOS类目Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向Geology ; Agriculture ; Water Resources
来源机构中国科学院新疆生态与地理研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198029
作者单位1.Xinjiang Acad Agr Sci, Inst Soil Fertilizer & Agr Water Saving, Urumqi 830091, Peoples R China;
2.Xinjiang Agr Univ, Coll Grassland & Environm Sci, Xinjiang Key Lab Soil & Plant Ecol Proc, Urumqi 830052, Peoples R China;
3.Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China
推荐引用方式
GB/T 7714
Jiang, Maibo,Wang, Xihe,Liusui, Yunhao,et al. Variation of soil aggregation and intra-aggregate carbon by long-term fertilization with aggregate formation in a grey desert soil[J]. 中国科学院新疆生态与地理研究所,2017,149:437-445.
APA Jiang, Maibo,Wang, Xihe,Liusui, Yunhao,Han, Chao,Zhao, Chengyi,&Liu, Hua.(2017).Variation of soil aggregation and intra-aggregate carbon by long-term fertilization with aggregate formation in a grey desert soil.CATENA,149,437-445.
MLA Jiang, Maibo,et al."Variation of soil aggregation and intra-aggregate carbon by long-term fertilization with aggregate formation in a grey desert soil".CATENA 149(2017):437-445.
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