RIBEIRO, A. I.; DIAS, H. C. T.; BESSI, D.; TONELLO, K. C.; The dynamics of the substrate recovery of waste dumps in calcary mining under natural regeneration. CERNE, v. 24, n. 1, p. 18-26, 2018. HIGHLIGHTSEvaluate the dynamics of the physical and chemical recovery of the substrates of waste dumps of different ages undergoing natural regeneration, in a calcary mining.Characterization of the vegetation, vegetation and physical and chemical cover of the substrates of the abandoned waste dumps since 1994 and 2013 and the soil of a native forest fragment adjacent to the mining was carried out.The soil cover rate with herbaceous, grassy, regenerating and litter of the sterile stacks are similar to the native forest fragment.The same was observed for the physical characterization of soil resistance to penetration, soil moisture content and relative light index. ABSTRACTThis study aimed to evaluate the dynamics of the physical and chemical recovery of the substrates of waste dumps of different ages undergoing natural regeneration, in a calcary mining in Salto de Pirapora -SP, Brazil. Characterization of the vegetation, vegetation and physical and chemical cover of the substrates of the abandoned waste dumps since 1994 and 2013 and the soil of a native forest fragment adjacent to the mining was carried out. Twelve plots of 10x10m were allocated in each environment. It was verified that the soil cover rate with herbaceous, grassy, regenerating and litter of the sterile stacks are similar to the native forest fragment. The same was observed for the physical characterization of soil resistance to penetration, soil moisture content and relative light index. For the chemical characteristics, in all areas sampled there is aluminum deficiency which, consequently, presented low potential acidity and alkaline pH. The CEC of the substrates of the waste dumps presented values similar to the CEC of the native forest fragment, with abundance in some essential nutrients, indicating the possibility of vegetation development in the sterile stacks and the contribution of the natural regeneration to the substrates. Thus, the plant-soil relationship via natural regeneration in the sterile piles contributed to the improvement of the edaphic quality of the substrates over time, being a potential form of recovery in calcary mining. Thereby, the Fabaceae predominated on the waste dumps, especially Leucaena leucocephala, which, despite being an exotic species, is relevant for the current recovery stage of the substrates.
Urban agriculture has its history tied to the development of civilizations. Aiming to identify the benefits generated by the practice and its motivations, a literature review and later analysis of articles describing current experiences, management characteristics and organization aspects was carried out. In countries with a very high HDI, community gardens and the well-being of the population are prominent themes. Countries with high HDI focus on soil contamination and mitigation of pollution impacts, as countries with an average HDI has as main theme the sustainability of the practice. Finally, low HDI countries discuss their importance for food security. Regardless of the objectives that motivate urban agriculture and research in the area, is evidenced its contribution to the environmental, social and economic quality of cities.
A importância do escoamento pelo tronco para a hidrologia e biogeoquímicados ecossistemas florestais é destacada pelo crescente interesse dacomunidade científica desde os anos 1970. Para resumir as principaiscontribuições dos estudos de escoamento pelo tronco (Sf) dos últimos anos,este trabalho apresenta uma revisão sistemática da literatura, incluindo375 publicações científicas de 2006 e 2019. O Sf em arbustos demonstrouuma eficiência superior (11,1%) ao escoamento pelo tronco em espéciesarbóreas (3,6%). Galhos, textura e composição das cascas, capacidade desaturação das folhas e intensidade dos ventos foram identificados como osfatores que mais influenciam o Sf. No entanto, apesar do crescente númerode publicações sobre o tema, a maioria concentra-se em regiões semiáridasda Ásia, principalmente na China e em regiões temperadas. Assim, para asregiões tropical e semiequatorial, ainda há um desconhecimento sobre opapel das diferentes espécies no ciclo biogeoquímico em relação ao Sf.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.