Results 81 to 90 of about 21,201 (207)

Local Knowledge, Agents and Models for the adaptation to climatic variability of livestock farmers in Uruguay [PDF]

open access: yes, 2012
Basaltic soils in Uruguay occupy 3.5 million hectares, 25% of the country, and are mainly exploited by extensive family ranching production systems. These shallow soils have an extremely reduced capacity to accumulate water that make them more sensitive ...
Bartaburu, Danilo   +4 more
core  

A model of rainfall based on finite-state cellular automata [PDF]

open access: yes, 2004
The purpose of this paper is to demonstrate that a finite state cellular automata model is suitable for modeling rainfall in the space-time plane. The time-series properties of the simulated series are matched with historical rainfall data gathered ...
Cowpertwait, P.S.P.   +2 more
core  

Seasonal variation of soil aggregate stability, porosity and infiltration during a crop sequence under no tillage

open access: yesTerra Latinoamericana, 2018
Soil properties vary over time with soils presenting different susceptibility to runoff and erosion during the year. Under no-tillage cropping, soil physical properties could change mainly due to the climatic factor effect, crop type and wheel traffic ...
Mario Guillermo Castiglioni   +3 more
doaj   +1 more source

A new approach for estimating northern peatland gross primary productivity using a satellite-sensor-derived chlorophyll index

open access: yes, 2011
Carbon flux models that are largely driven by remotely sensed data can be used to estimate gross primary productivity (GPP) over large areas, but despite the importance of peatland ecosystems in the global carbon cycle, relatively little attention has ...
Dash, J., Harris, A.
core   +1 more source

Hydrological Modelling Using a Rainfall Simulator over an Experimental Hillslope Plot

open access: yesHydrology, 2017
Hydrological processes are complex to compute in hilly areas when compared to plain areas. The governing processes behind runoff generation on hillslopes are subsurface storm flow, saturation excess flow, overland flow, return flow and pipe storage.
Arpit Chouksey   +4 more
doaj   +1 more source

Dry matter yields and hydrological properties of three perennial grasses of a semi-arid environment in East Africa [PDF]

open access: yes, 2010
Enteropogon macrostachyus (Bush rye), Cenchrus ciliaris L. (African foxtail grass) and Eragrostis superba Peyr (Maasai love grass) are important perennial rangeland grasses in Kenya.
Clavel, D.   +10 more
core   +5 more sources

Atributos físicos, químicos e erosão entressulcos sob chuva simulada, em sistemas de plantio direto e convencional Physics and chemical attributes and enter-rill erosion under simulated rain in no tillage and conventional systems

open access: yesEngenharia Agrícola, 2005
Este trabalho teve como objetivo estimar as perdas de solo e água, nos sistemas de plantio direto e convencional, e foi realizado no câmpus experimental da UFMS, em Dourados - MS, em solo classificado como Latossolo Vermelho distroférrico, no período ...
Cristiane G. da Silva   +3 more
doaj   +1 more source

The AtollGame Experience: from Knowledge Engineering to a Computer-Assisted Role Playing Game [PDF]

open access: yes
This paper presents the methodology developed to collect, understand and merge viewpoints coming from different stakeholders in order to build a shared and formal representation of the studied system dealing with groundwater management in the low-lying ...
Anne Dray   +6 more
core  

Adaptation of Agro-IBIS model for Eucalyptus carbon budget estimation at regional level- a case study in Sao Paulo State, Brazil [PDF]

open access: yes, 2019
Highly productive fast-growing Eucalyptus plantations cover more than 5 million hectares in Brazil and exhibit very dynamic carbon fluxes throughout their 6-7 year rotations. These plantations quickly shift from C sources at the beginning of the rotation
Almeida Colmanetti, Michel Anderson   +12 more
core  

Surface roughness effects on runoff and soil erosion rates under simulated rainfall [PDF]

open access: yes, 2010
Soil surface roughness is identified as one of the controlling factors governing runoff and soil loss. Yet, most studies pay little attention to soil surface roughness.
Cornelis, Wim   +5 more
core  

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