巴西Goiás西南部土地利用和管理系统的碳储量和不稳定性

IF 0.8 Q3 AGRICULTURE, MULTIDISCIPLINARY
D. O. Ribeiro, Gabriel Rosa Gonçalves, Giovana Oliveira Rubio, G. Castoldi, Eduardo Pradi Vendruscolo, Zaqueu Henrique de Souza
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引用次数: 0

摘要

巴西Goiás州的西南地区适合多种农业活动,即使是在典型石漠化等较为脆弱的土壤中也是如此。本研究旨在评价Goiás西南地区土地利用和管理制度下典型石英岩组的碳储量和稳定性。试验采用完全随机设计,包括五种土地利用和管理制度[塞拉多原生植被(巴西稀树草原)、集约放牧牧场、粗放放牧牧场、大豆和玉米轮作以及桉树]的区域。在0-0.1和0.1-0.2 m层采集土壤样品。土地利用和管理制度对碳储量和碳质量有影响。0 ~ 0.2 m层碳储量在15.9 ~ 29.2 Mg ha−1之间。与塞拉多植被和大豆、玉米轮作区相比,桉树和集约放牧区促进了碳储量的增加,增加幅度在72 - 84%之间。在桉树区和集约放牧区,F1、F2和F4组分的碳含量较高。在0-0.1 m土层,桉树和集约放牧区碳管理指数分别比塞拉多原生植被参考区提高了33%和36%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Carbon stocks and lability in land use and management systems in southwestern Goiás, Brazil
ABSTRACT The southwest region of the Goiás state, Brazil, is suitable for several agricultural activities, even in more fragile soils such as Typic Quartzipsamments. This study aimed to evaluate the carbon stocks and lability of a Typic Quartzipsamment under land use and management systems in southwestern Goiás. The experiment was conducted in a completely randomized design and consisted of areas subjected to five land use and management systems [native Cerrado vegetation (Brazilian Savanna), pasture under intensive grazing, pasture under extensive grazing, soybean and maize rotation, and eucalyptus]. Soil samples were collected at the 0-0.1 and 0.1-0.2 m layers. The land use and management systems affected the carbon stocks and quality. In the 0-0.2 m layer, the carbon stocks ranged between 15.9 and 29.2 Mg ha−1. The areas with eucalyptus and under intensive grazing promoted increases in the carbon stocks that ranged between 72 and 84 %, when compared to the areas with Cerrado vegetation and soybean and maize rotation. The carbon contents in the F1, F2 and F4 fractions were higher in the areas with eucalyptus and under intensive grazing. In the 0-0.1 m soil layer, the areas with eucalyptus and under intensive grazing had an increase in the carbon management index by 33 and 36 %, respectively, when compared to the reference area with native Cerrado vegetation.
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来源期刊
Pesquisa Agropecuaria Tropical
Pesquisa Agropecuaria Tropical AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
1.40
自引率
20.00%
发文量
26
审稿时长
20 weeks
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