| Autor: |
Lucas Rabelo Campos, José A.M. Demattê, Henrique Bellinaso, Raul Roberto Poppiel, Lucas T. Greschuk, Rodnei Rizzo, Nícolas Augusto Rosin, Jorge Tadeu Fim Rosas |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Soil Security, Vol 7, Iss , Pp 100057- (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2667-0062 |
| DOI: |
10.1016/j.soisec.2022.100057 |
| Popis: |
Bare soil triggers several undesirable processes for its quality and remote sensing can be a powerful tool to monitoring its occurrence. This work aims to apply multi-temporal satellite image techniques to detect bare soil areas under sugarcane cultivation and relate with soil security. The study was carried out in an area of 2,574 km² located in Brazil. The MapBiomas land use and cover collection was used to know the sugarcane area changes from 1985 to 2019. A collection of Landsat images over 35 years (1985 to 2019) were used to create Synthetic Soil Images (SYSIs) and the Bare Soil Frequency Images (BSF) of the area. SYSIs were generated annually, in the rainy and dry season. BSFs was generated in the total period and every five years by dry and rainy season. Thus, the land use changes and bare soil occurrence were compared to categorical maps of soil types, surface clay classes and slope, and also with economic, social and political changes in the period. In general, the bare soil increased from 1985 to 2006, and began to decline thereafter because of “Agro-environmental Protocol’ that anticipated the end of pre-harvest burning in sugarcane crop. BSF in the rainy season decreased over the period motivated by knowledge of farmers and changes in management. Despite this, many prone to erosion soils classes (Arenosols, Lixisols/Acrisols) remain under conventional tillage in the rainy season. We concluded that the use of multi-temporal satellite images is an important approach to monitoring soil management contributing to soil security. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
|
