Abstract
ABSTRACT Through the lack or non-use of conservationist criteria for adequate land use and management, the scarcity of natural resources becomes ever more evident. This study aimed to analyze the origin of the sediments in the Posses catchment, municipality of Extrema, state of Minas Gerais, Brazil, throughout the fingerprinting technique and portable X-ray fluorescence. Samples from soils under agriculture, pasture, and roads; and from the subsoil of theses land uses were taken in a widespread and representative manner from the [...]
Highlights
The scarcity of natural resources becomes ever more evident to the extent that catchments are exploited without the adoption of adequate conservationist criteria
The fingerprinting technique estimates that the contributions to outlet sediments are dominated by rural roads, following by subsoil or pasture and by agriculture
Our results showed the potential of the fingerprinting technique and the portable X-ray fluorescence device (pXRF) for use as tools by the program of Payment for Environmental Services in the monitoring of catchment areas
Summary
The scarcity of natural resources becomes ever more evident to the extent that catchments are exploited without the adoption of adequate conservationist criteria In this context, one of the phenomena that has intensified is water erosion and, along with it, a series of problems, such as siltation and pollution of streams and rivers. Through the PES, rural producers received a financial incentive to adapt their properties to reduce erosion, silting, and pollution of water sources in the rural area. This stimulus has been implemented based only on the “opportunity cost” and is still in a refinement stage. For that reason, knowing and discriminating the contribution of each one of the sediment sources produced may be a good option for the lack of quantitative criteria applicable to evaluation and monitoring of impacts, positive or negative, of the management practices adopted on the rural properties monitored by the PES (Saad et al, 2018)
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