Crown cover of native trees in the structural development of reforestations in Rondônia

Abstract

RESUMOSubmitted on June 09 th , 2015 and approved on June 23 rd , 2017. 1 This work is part of the project "Technology transfer and availability for management of dairy herds and quality milk production in the dairies of Ji-Paraná and Nova Mamoré, RO". The objective of this study was to assess the initial development of a reforestation structure using the crown projection method as an indicator to monitor the recovery in degraded areas in the State of Rondônia. The method consisted of correlating canopy projection data with structural performance variables of six native tree species of the Amazon region. The study found that the species "large acacia" had the best capacity to promote shading, favor rapid covering, protection, and stabilization of the soil in the initial phase, at 24 months, with a crown area of 62.82 m². The crown projection method was suitable to identify the native trees that stand out in the initial years of restoration of degraded areas. The method can be used to indicate variations in the structural development of species as a function of site quality and to assist in determining the feasibility of native tree species selected for reforestation. Therefore, further studies on this approach are needed to develop models of crown cover prediction and validate crown cover as an indicator of reforestation development in restoration processes in the Amazon region.

Prevalência, incidência e mortalidade devido Malária nos estados brasileiros entre o período de 1990-2019

“…O tratamento deve ser direcionado para cada paciente, portanto, deve-se levar em consideração a espécie de plasmódio, gravidade da doença, história anterior de malária, condições especiais como comorbidades e gravidez e a idade do paciente 11 . O Sistema Único de Saúde (SUS), disponibiliza gratuitamente em todo território nacional, os medicamentos antimaláricos 14 .…”