Arid
DOI10.1002/ldr.2264
ORGANIC CARBON AND NITROGEN STOCKS IN SOILS OF NORTHEASTERN BRAZIL CONVERTED TO IRRIGATED AGRICULTURE
de Oliveira, Samia Paiva1; de Lacerda, Nilda Braga1; Blum, Susana Churka1; Ortiz Escobar, Maria Eugenia1; de Oliveira, Teogenes Senna2
通讯作者de Oliveira, Samia Paiva
来源期刊LAND DEGRADATION & DEVELOPMENT
ISSN1085-3278
EISSN1099-145X
出版年2015
卷号26期号:1页码:9-21
英文摘要

The productivity of agricultural areas in semi-arid regions can be improved through the use of irrigation. However, the intensive cropping of such soils can have detrimental effects, especially with regard to soil organic matter (SOM) pools. The goal of this work was to evaluate soil organic carbon and nitrogen stocks of different irrigated agricultural systems and compare these to preserved natural ecosystems adjacent to each of the cropping systems. We selected four cropping systems: banana, a maize/bean succession (MB), pasture (P) and guava (G), as well as areas covered by native vegetation. Stocks of total soil organic carbon (TOC), amounts of unprotected and protected soil organic carbon, carbon and nitrogen in microbial biomass and microbial respiration were quantified. Surface soil TOC stocks under banana, G and P grass were significantly greater than under native vegetation and MB system. The most intensive management system was the MB, and the least intensive systems were P and G. The least intensive cropping systems were grouped on the basis of similarities in TOC, POC, total soil nitrogen and N in microbial biomass stocks. These results show that the degree of soil degradation resulting from changes in land use systems increases with the intensity of the land use systems themselves. This confirms the established hypothesis that the extent of degradation of soil properties and changes in some SOM fractions depend on the intensity of soil use. Furthermore, the adoption of conservation practices may remediate soil degradation and increase SOM stocks, mainly at the soil’s surface. Copyright (c) 2013 John Wiley & Sons, Ltd.


英文关键词tropical region irrigated areas soil degradation soil management organic matter
类型Article
语种英语
国家Brazil
收录类别SCI-E
WOS记录号WOS:000348060200002
WOS关键词SEMIARID MEDITERRANEAN AGROECOSYSTEM ; MICROBIAL BIOMASS ; SOUTHERN BRAZIL ; MANAGEMENT-PRACTICES ; NO-TILLAGE ; MATTER ; DYNAMICS ; QUALITY ; SYSTEMS ; SEQUESTRATION
WOS类目Environmental Sciences ; Soil Science
WOS研究方向Environmental Sciences & Ecology ; Agriculture
来源机构Arizona State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/189092
作者单位1.Univ Fed Ceara, Dept Soil Sci, Fortaleza, Ceara, Brazil;
2.Univ Fed Vicosa, Dept Soil Sci, Vicosa, MG, Brazil
推荐引用方式
GB/T 7714
de Oliveira, Samia Paiva,de Lacerda, Nilda Braga,Blum, Susana Churka,et al. ORGANIC CARBON AND NITROGEN STOCKS IN SOILS OF NORTHEASTERN BRAZIL CONVERTED TO IRRIGATED AGRICULTURE[J]. Arizona State University,2015,26(1):9-21.
APA de Oliveira, Samia Paiva,de Lacerda, Nilda Braga,Blum, Susana Churka,Ortiz Escobar, Maria Eugenia,&de Oliveira, Teogenes Senna.(2015).ORGANIC CARBON AND NITROGEN STOCKS IN SOILS OF NORTHEASTERN BRAZIL CONVERTED TO IRRIGATED AGRICULTURE.LAND DEGRADATION & DEVELOPMENT,26(1),9-21.
MLA de Oliveira, Samia Paiva,et al."ORGANIC CARBON AND NITROGEN STOCKS IN SOILS OF NORTHEASTERN BRAZIL CONVERTED TO IRRIGATED AGRICULTURE".LAND DEGRADATION & DEVELOPMENT 26.1(2015):9-21.
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