دورية أكاديمية
Variability and spatial correlation of aggregates and organic carbon in indian dark earth in Apuí region, AM
| العنوان: | Variability and spatial correlation of aggregates and organic carbon in indian dark earth in Apuí region, AM |
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| المؤلفون: | Romario Pimenta Gomes, Milton Cesar Costa Campos, Wildson Benedito Mendes Brito, Jose Mauricio Cunha, Aleksander Westphal Muniz, Laercio Santos Silva, Edicarlos Damacena Souza, Ivanildo Amorim Oliveira, Ludmila Freitas |
| المصدر: | Bioscience Journal, Vol 34, Iss 5 (2018) |
| بيانات النشر: | Universidade Federal de Uberlândia, 2018. |
| سنة النشر: | 2018 |
| المجموعة: | LCC:Agriculture LCC:Biology (General) |
| مصطلحات موضوعية: | soil aggregation, geostatistics, cross variogram, Agriculture, Biology (General), QH301-705.5 |
| الوصف: | Having in mind the importance of knowing the variability and spatial correlation of soil properties in Indian Dark Earth (IDE), we evaluated in this study the variability and the spatial correlation of aggregates and carbon in an Ultisol under coffee cultivation in southern Amazonas. It was established a 48 x 88 m sampling grid spaced 06 x 08 m, totalling 88 sampling points. Then soil samples were collected at: 0.0-0.05, 0.05-0.10, and 0.10-0.20 m layers. The spatial variability of the Mean Weighted Diameter (MWD) attributes, aggregates > 2 mm, < 2 mm, bulk density (BD) and organic carbon (OC) was analyzed by adjusting the simple semivariograms, while spatial correlations of the OC with aggregates and BD were analyzed by cross-semivariogram. We could conclude that there was spatial dependence in the variables, wherein the largest ones were observed at 0.0-0.05 m, except for Mean Weighted Diameter (MWD) and aggregates greater than 2.00 mm with larger range of values in depth from 0.05-0.10 and 0.10-0.20 m. The mean weight diameter and aggregate class attributes greater than 2.00 mm had negative spatial correlation with organic carbon at 0.0-0.05 m, while the smaller aggregates than 2.00 mm classes and bulk density correlated positively with organic carbon at 0.0-0.05 m and 0.10-0.20 m. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1981-3163 2018-3941 |
| العلاقة: | http://www.seer.ufu.br/index.php/biosciencejournal/article/view/39414Test; https://doaj.org/toc/1981-3163Test |
| DOI: | 10.14393/BJ-v34n5a2018-39414 |
| الوصول الحر: | https://doaj.org/article/2eb24a50b26748fd95a65d32ef9c1fefTest |
| رقم الانضمام: | edsdoj.2eb24a50b26748fd95a65d32ef9c1fef |
| قاعدة البيانات: | Directory of Open Access Journals |
| تدمد: | 19813163 20183941 |
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| DOI: | 10.14393/BJ-v34n5a2018-39414 |