NDLI: Carbon and nitrogen pools in different aggregates of a Chinese Mollisol as influenced by long-term fertilization

Content Provider	Springer Nature Link
Author	Chen, Ying Zhang, Xudong He, Hongbo Xie, Hongtu Yan, Ying Zhu, Ping Ren, Jun Wang, Lichun
Copyright Year	2009
Abstract	It is known that soil organic matter (SOM) dynamics are sensitive to fertilizations, but it is different from soil to soil. It is unclear how the long-term applications of organic manure and mineral fertilizers impact the accumulation and distribution of soil organic carbon (SOC) and total nitrogen (TN) especially in soil aggregate fractions of Chinese Mollisols, which have been intensively cultivated for decades under maize monocropping and conventional tillage ways. Thereby, the research of this kind is very important for the sustainable use of agricultural land in China, where land resources are extremely limited for its huge population. The objectives of this study were to identify how the long-term fertilization treatments would affect the aggregate, SOC and TN distribution pattern in the Chinese Mollisol, and how soil aggregation contribute to the storage and stabilization process of SOC and TN.Soils were sampled in April 2005 from a long-term experiment site established in 1979. Six treatments were selected as follows: CK (zero fertilizer), NPK (mineral fertilizers), M1 (organic manure at lower level), M1NPK (combination of M1 and NPK), M2 (organic manure at higher level) and M2NPK (combination of M2 and NPK). Four aggregate fractions, i.e., large macroaggregate (>2,000 µm), small macroaggregate (250–2,000 µm), microaggregate (53–250 µm) and silt + clay fraction (<53 µm), respectively, were obtained by wet sieving. SOC and TN in bulk soils and aggregates were analyzed using a C/N/H/S-analyzer (Vario ElementarIII, Germany).The small macroaggregate was the most abundant component in the soils, accounting for 46.1–60.2% of the dry soil mass and about 50% of SOC and TN. The small macroaggregate proportion decreased while large macroaggregate percentage increased significantly after organic manure treatment. However, mineral fertilizers application enlarged the proportion of microaggregate and silt + clay fraction. Consequently, SOC and TN contents in all the four aggregates increased remarkably with organic manure application, whereas mere mineral fertilizers addition did not affect SOC and TN content significantly. The combination of NPK with the higher level of organic manure was more effective in improving SOC and TN accumulation than organic manure application alone. Moreover, organic manure application tended to decrease C/N ratios, in general, and higher C/N ratios in >53 µm fractions than in others, suggesting that SOC in the larger fractions is relatively fresh or little altered by microorganisms, whereas, the SOC associated with <53 µm fraction is more decomposed and relative aged. However, the higher enrichment factor for N (E $_{N}$) than for C (E $_{C}$) in <53 µm fraction indicates a preferential depletion of labile SOC and relative accumulation of stable SOC pools in the finest fraction.The long-term application of organic manure generally facilitated aggregation processes and then improved the quantity and quality of SOM in the Mollisol, whereas the long-term mineral fertilizers application generally resulted in the de-aggregation effect. The combination of organic manure and mineral fertilizers was a better way to further enhance the sequestration of SOC and improve SOM quality by aggregation compared to the pure organic manure. It is concluded that when increasing organic input, physical protection plays a major role for the sequestration of the increased SOC in the Chinese Mollisol. However, when SOC is depleted under a certain management practice, it will happen preferentially in the physical protected SOC in large aggregates. This study has great implications for better understanding SOC and N dynamics as affected by long-term fertilization.
Starting Page	1018
Ending Page	1026
Page Count	9
File Format	PDF
ISSN	14390108
Journal	Journal of Soils and Sediments
Volume Number	10
Issue Number	6
e-ISSN	16147480
Language	English
Publisher	Springer-Verlag
Publisher Date	2009-09-01
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Aggregate Fertilization Mollisol Nitrogen Soil organic carbon Environmental Physics Environment Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Stratigraphy Earth-Surface Processes

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Impacts of long-term inorganic and organic fertilization on lignin in a Mollisol

Impact of long-term application of manure, crop residue, and mineral fertilizer on organic carbon pools and crop yields in a Mollisol

Contrast effect of long-term fertilization on SOC and SIC stocks and distribution in different soil particle-size fractions

Exploring particle size distribution and organic carbon pools mobilized by different erosion processes at the catchment scale

Effects of organic amendments on soil carbon sequestration in paddy fields of subtropical China

Organic mulch and fertilization affect soil carbon pools and forms under intensively managed bamboo (Phyllostachys praecox) forests in southeast China

Distribution of carbon and nitrogen in water-stable aggregates and soil stability under long-term manure application in solonetzic soils of the Songnen plain, northeast China

Soil carbon dioxide emission from intensively cultivated black soil in Northeast China: nitrogen fertilization effect

Long-term effects of biochar amount on the content and composition of organic matter in soil aggregates under field conditions

Carbon and nitrogen pools in different aggregates of a Chinese Mollisol as influenced by long-term fertilization

Similar Documents

Impacts of long-term inorganic and organic fertilization on lignin in a Mollisol

Impact of long-term application of manure, crop residue, and mineral fertilizer on organic carbon pools and crop yields in a Mollisol

Contrast effect of long-term fertilization on SOC and SIC stocks and distribution in different soil particle-size fractions

Exploring particle size distribution and organic carbon pools mobilized by different erosion processes at the catchment scale

Effects of organic amendments on soil carbon sequestration in paddy fields of subtropical China

Organic mulch and fertilization affect soil carbon pools and forms under intensively managed bamboo (Phyllostachys praecox) forests in southeast China

Distribution of carbon and nitrogen in water-stable aggregates and soil stability under long-term manure application in solonetzic soils of the Songnen plain, northeast China

Soil carbon dioxide emission from intensively cultivated black soil in Northeast China: nitrogen fertilization effect

Long-term effects of biochar amount on the content and composition of organic matter in soil aggregates under field conditions

Carbon and nitrogen pools in different aggregates of a Chinese Mollisol as influenced by long-term fertilization