Studies of soil porosity through image analysis are important to an understanding how the functions. However, lack a simplified methodology for quantification shape, number, and size pores has limited use information extracted from images. The present work proposes software program characterization data derived 2-D user-friendly was developed in C++ allows classification terms size, combinations shape. Using raw generated by systems, calculates following parameters porosity: total area pore...

The aim of this study was to evaluate the performance pedotransfer functions (PTFs) available in literature estimate soil bulk density (ρb) different regions Brazil, using metrics. predictive capacity 25 PTFs evaluated mean absolute error (MAE), (ME), root squared (RMSE), coefficient determination (R2) and regression characteristic (REC) curve. models performed differently when comparing observed estimated ρb values. In general, showed a close value data, considered as simplest possible...

Knowledge of the hydraulic properties soil is crucial importance to an understanding interactions between vegetation, and water. There little information available about Podzol soils found in tropical regions. The aim this study was present morphology a toposequence situated permanent plot at Ilha do Cardoso State Park (Cananéia, SP, Brazil). Ultradetailed maps were used define inside plot. Five profiles, representing main types soil, opened along toposequence, which Podzols are dominant....

A bibliometric analysis was performed to evaluate the research on common forest management that were influenced by seminal work of Elinor Ostrom (Governing Commons), from 1990 2018. This based online database Science Citation Index Expanded - Web Science©. Six main aspects retrieved publications evaluated: (1) publication years; (2) journals; (3) countries (or regions); (4) study approach type; (5) authors; and (6) keywords. topic has shown be relevant all over world. Authors 34 different...

O objetivo deste trabalho foi analisar o comportamento espaçotemporal da precipitação pluvial no Estado do Rio Grande Sul, entre os decênios de 1987-1996 e 1997-2006, por meio técnicas mineração dados. As séries históricas foram adquiridas sistema informações hidrológicas Hidroweb. A metodologia utilizada teve como base modelo CRISP-DM (Cross Industry Standard Process for Data Mining). Foram definidas áreas pluviometricamente homogêneas para 1997-2006. Em seguida, pela sobreposição dos...

Abstract 1. Over the past decades, evidence‐based research has become increasingly important in restoration ecology. Evidence synthesis can be a powerful tool to identify most effective strategies conserve and restore ecosystems. However, reviews environmental sector have been described as non‐systematic exhibit diverse range of approaches. While it is known that syntheses substantially improve quality, reliability (i.e. level confidence an end‐user may place their methodology) remains...

Patterns in the errors of three pedotransfer functions (PTFs) for estimating water retention at −10 and −1500 kPa were investigated using a data set Brazilian soils. Of PTFs, one was developed soils from temperate regions, different tropical areas, specifically based on We used classification tree models to obtain rules that represent patterns PTF errors, reflecting differences between measured predicted content values. These classified as acceptable or unacceptable according defined...

One issue in understanding the performance of pedotransfer functions (PTFs) is knowing soil properties that contribute most to PTF errors. Classification trees provide a means for identifying these properties. The objective this study was use classification tree identify patterns residuals. analysis applied PTFs developed by Vereecken and coworkers 1989 estimate water contents at −10 −1500 kPa. Errors below above certain threshold values were defined as acceptable unacceptable, respectively....

INTERVALO HÍDRICO ÓTIMO PARA AVALIAÇÃO DE SISTEMAS PRODUÇÃO E RENDIMENTO DO FEIJÃO Laura Fernanda Simões da Silva1; Mara de Andrade Marinho2; Raquel Stucchi Boschi3 Edson Eiji Matsura2 ¹Programa Pós-Graduação em Agroecologia e Desenvolvimento Rural / CCA UFSCar Rodovia Anhanguera, km 174 – SP-330 - Araras SP Brasil CEP: 13600-970, email: laurafsimoes@yahoo.com ²Faculdade Engenharia Agrícola, Universidade Estadual Campinas, Avenida Candido Rondon, n 501, Barão Geraldo, Campinas SP, CEP...

Bringing together and synthesizing data from several primary studies scales represents a powerful method for identifying patterns gaps within forest restoration science. In this study, we employ pioneer quantitative database‐driven review combined with spatial analysis to delineate research trends across biodiversity the Brazilian Atlantic Forest (BAF). We gathered total of 90 that met our inclusion criteria, collectively providing 822 observations (comparisons between sites reference...

The lack of knowledge and ecological challenges in the reproduction Cerrado graminoids has prevent commercial production native seedling, complicating efforts to restore Cerrado. This study aimed assess survival vegetative tillers from clonal propagation five caespitose graminoid species We collected ten adult plants (matrices) per a cerrado sensu stricto area, located at São Carlos – SP, be used as source units (tillers). A total 68 specie were separated transplanted into containers, with...

The balance between precipitation and evapotranspiration (ET) has direct effect on vegetation, any change in its structure composition can influence it. aim of this study is to determine experimentally the daily invasive species, Hedychium coronarium, compare with a group four native species riparian forest. experiment was carried out greenhouse three different treatments: (1) only species; (2) (3) mixture species. In each lysimeter, pressure transducers recorded water level at every 15 min...

Foram avaliados modelos agrometeorológicos para determinação das radiações global (Rs) e líquida (Rn) a região de Araras-SP, o que foi feito partir informações medidas da temperatura máxima mínima do ar atmosférico. Inicialmente, Rs Rn foram estimadas por consagrados na literatura, no caso pelos Hargreaves Samani (MHS), Bristow Campbell (MBC) Weiss (MWE); Zanetti (MZA) Fietz Fisch (MFF). Posteriormente, propostos específicos temperaturas atmosférico coletadas estação meteorológica Centro...

In this study, we propose a methodology (ImaGrain) for quantifying the sand fractions from two-dimensional images obtained thin sections of undisturbed soil samples. Samples analysis were collected horizons and sediment layers two profiles pits, located in Experimental Station Tupi, Piracicaba, São Paulo, Brazil. Data image used to calculate mean, median, S.D. (a measure sorting), skewness, kurtosis size distribution grains, results compared with those sieving (standard) method. Roundness...