Rangeland Ecology & Management
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Displaying 51 - 87 of 87 results
- Library Collection RecordThe Universal Soil Loss Equation (USLE) was used to predict soil erosion hazard in the Upper Ewaso Ng'iro North basin of Kenya using data from erosion plots and reconnaissance surveys. The R-…Publication Date 2000
- soil erosion hazard assessment
- USLE
- GIS
- Kenya
- Upper Ewaso Ng'iro basin
- erosion
- rainfall
- conservation
- mapping
- hazard assessment
- Africa
- Library Collection RecordThis paper examines variation in local perceptions of risk in semi-arid Tanzania, identifying factors that influence local perceptions of problems and testing the feasibility of risk mapping as a…Publication Date 2003
- Africa
- agriculture
- Gender
- pastoralism
- Sustainable development
- water
- socio-economic aspects
- household income studies
- mapping
- Africa
- Library Collection RecordTransitions from grassland to shrubland through woody plant encroachment result in potentially significant shifts in savanna ecosystem function. Given high resolution imagery, a textural index could…Publication Date 1998
- grasslands
- ecosystem dynamics
- indigenous encroaching species
- management
- mapping
- remote sensing
- Landsat images
- Africa
- Library Collection RecordSurface temperature (Ts), air temperature (Ta), atmospheric precipitable water (U), and vapor pressure deficit (D) have been derived from algorithms that use satellite observations of visible, near…Publication Date 1998
- environmental factors
- remote sensing
- savanna
- agriculture
- mapping
- Africa
- Library Collection RecordWe review various recent approaches to making digital soil maps based on geographic information systems (GIS) data layers, note some commonalities and propose a generic framework for the future. We…Publication Date 2003
- Soil map
- soil survey
- Digital map
- classification tree
- DEM
- DTM
- GAM
- Generalised linear model
- Geophysics
- geostatistics
- GIS
- Neural network
- Pedometrics
- Pedotransfer function
- Regression tree
- remote sensing
- Soil spatial prediction function
- Wavelets
- soils
- modelling
- mapping
- Africa
- Library Collection RecordUsing normalized difference vegetation index (NDVI) imagery, we examined changes in vegetative cover across Tanzania and found that overall greenness increased over 13 years from 1982 to 1994. We…Publication Date 2000
- Habitat change
- NDVI
- protected areas
- Tanzania
- Vegetative greenness
- NDVI values
- mapping
- satellite imagery
- remote sensing
- vegetation dynamics
- management
- land use
- degradation
- Africa
- Library Collection RecordVegetation mapping of plant communities at fine spatial scales is increasingly supported by remote sensing technology. However, combining ecological ground truth information and remote sensing…Publication Date 2010
- cluster analysis
- Redundancy analysis
- Multivariate
- Supervised fuzzy c-means
- semiarid
- rangelands
- Namibia
- imaging spectroscopy
- remote sensing
- mapping
- vegetation dynamics
- Namibia
- Africa
- Library Collection RecordSavanna covers about two-thirds of Africa, with forage quantity and quality being important factors determining the distribution and density of wildlife and domestic stock. Testing hypotheses about…Publication Date 2010
- forage
- quality
- remote sensing
- hyperspectral
- herbivory
- Foliar
- nitrogen
- protein
- Polyphenol
- mopane
- savanna
- forage quality
- Forage Quantity
- livestock
- mapping
- management
- land use
- Africa
- Library Collection RecordDegradation of vegetation and soils in drylands, sometimes called desertification, is thought to be a serious threat to the sustainability of human habitation, but maps of the extent and severity of…Publication Date 2009
- dryland degradation
- desertification
- Communal land
- net primary production (NPP)
- Local NPP scaling (LNS)
- MODIS
- sustainability
- mapping
- degradation
- communal farming
- plant production
- Zimbabwe
- Africa
- Library Collection RecordFire is a prominent disturbance factor and a major force of environmental change especially in the African savannas. The development of an accurate system to map and monitor fires on the African…Publication Date 2005
- Savanna fires
- Low-resolution bias
- Burned-area mapping
- Seasonal-mosaic
- Africa
- savanna
- fire
- remote sensing
- mapping
- Africa
- Library Collection RecordThe remote sensing of Earth surface changes is an active research field aimed at the development of methods and data products needed by scientists, resource managers, and policymakers. Fire is a…Publication Date 2005
- fire
- Fire-affected area
- Burned area
- change detection
- BRDF
- MODIS
- Time series
- remote sensing
- mapping
- modelling
- Africa
- Library Collection RecordA new integrated approach, involving continuum-removed absorption features, the red edge position and neural networks, is developed and applied to map grass nitrogen concentration in an African…Publication Date 2004
- Hymap imagery
- Absorption features
- Continuum removal
- red edge position
- Foliar nitrogen concentration
- Savanna rangelands
- savanna
- rangelands
- mapping
- plant production
- grasslands
- forage quality
- remote sensing
- conservation
- national parks
- Africa
- Library Collection RecordSpatial technologies present possibilities for producing frequently updated and accurate habitat maps, which are important in biodiversity conservation. Assemblages of vegetation are equivalent to…Publication Date 2010
- biodiversity conservation
- habitat mapping
- remote sensing
- soil fertility
- conservation
- biodiversity
- mapping
- satellite imagery
- national parks
- South Africa
- Library Collection RecordThe Global Assessment of Soil Degradation (GLASOD) has been the most influential global appraisal of land quality in terms of environmental policy. However, its expert judgments were never tested for…Publication Date 2009
- GLASOD
- land degradation
- Expert judgment
- Qualitative response model
- Non-parametric analysis
- Soil Condition
- degradation
- environmental impact
- GIS
- land use
- mapping
- crop production
- Africa
- Library Collection RecordThe study investigates the vulnerability of vegetation over Africa to El-Niño Southern Oscillation (ENSO) events using the moving window statistical correlation analysis technique. The correlation…Publication Date 2010
- El-Niño
- remote sensing
- Vegetation vulnerability
- NDVI values
- monitoring
- hazard assessment
- drought
- mapping
- Africa
- Library Collection RecordSpatially explicit land use/cover models are indispensable for sustainable rural land use planning, particularly in southern African countries that are experiencing rapid land use/cover changes.…Publication Date 2009
- Land use/cover change
- Multicriteria evaluation (MCE)
- Multi-objective land allocation (MOLA)
- Markov-cellular automata model
- land use
- modelling
- remote sensing
- mapping
- degradation
- rural areas
- Zimbabwe
- Africa
- Library Collection RecordA versatile computerised overlay technique to analyse the capability of relatively constant and objectively measured land characteristics to sustain any defined land use was developed in FORTRAN. The…Publication Date 1984
- land use
- mapping
- Africa
- Library Collection RecordThe role of empiricism in predicting mean annual primary production at the mesoscale is demonstrated through development of a simple model (RESAP) for application over all land surfaces within a…Publication Date 1993
- savanna
- modelling
- plant production
- mapping
- agriculture
- Africa
- Library Collection RecordVegetation classification and mapping includes the following stages: stratification, sampling and classification followed by refinement and mapping. Stratification with the aid of aerial photography…Publication Date 1987
- mapping
- remote sensing
- Landsat images
- Africa
- Library Collection RecordNo abstract availablePublication Date 1988
- land use
- mapping
- Africa
- Library Collection RecordIn 1989, the opportunity was identified to create a botanical map series which could be used by authorities to make informed decisions and which would highlight the potential impact significance of…Publication Date 1996
- mapping
- conservation
- vegetation
- Coast
- South Africa
- development
- GIS
- management
- Africa
- Library Collection RecordThe characteristics and dynamics of dry savanna vegetation cover are receiving considerable attention from the perspectives of both global change and range degradation studies. Problems include the…Publication Date 1996
- savanna
- remote sensing
- mapping
- management
- degradation
- grazing
- Africa
- Library Collection RecordWithin the field of conservation there has been increasing concern about the fragmentation and isolation of habitats. Suggestions have been made for the implementation of [`]buffer zones' to…Publication Date 1987
- conservation
- land use
- monitoring
- satellite imagery
- remote sensing
- mapping
- Africa
- Library Collection RecordThe major tasks of these guidelines are the following: - To provide any user, who employs a topographic airborne laser scanning system, with appropriate common guidelines and recommendations for…Publication Date 2013
- remote sensing
- topographical analysis
- data analysis
- mapping
- LiDAR
- Library Collection RecordThis study aimed to estimate green herbage biomass (GBM) and crude protein (CP) concentrations of a mixed-sown pasture in Hokkaido, Japan using ground based hyperspectral measurements and…Publication Date 2011
- plant production
- fodder quality
- pastures
- management
- grazing
- geostatistical analysis
- herbage biomass
- Herbage Quality
- hyperspectral measurement
- mapping
- Hokkaido
- Japan
- Library Collection RecordQuestion: Can we predict the spatial distribution of plant communities in semi-arid rangelands based on a limited set of environmental variables? Where are priority areas for conservation located?…Publication Date 2011
- CT-model
- Decision tree classifier
- grazing intensity
- Juniperus excelsa woodlands
- rangelands
- ecosystem ecology
- mapping
- conservation ecology
- grazing
- modelling
- agriculture
- Al Jabal al Akhdar
- Arabia
- Library Collection RecordLand degradation, the temporary or permanent reduction of land's productive capacity resulting from poor land management, has gained considerable attention as an environmental and development…Publication Date 2009
- dryland degradation
- net primary productivity
- HANPP
- land use
- drylands
- degradation
- management
- Economic Aspects
- desertification
- mapping
- Library Collection RecordQuestion: Is it possible to translate vegetation maps into reliable thematic maps of site conditions? Method: This paper presents a new method, called Iteratio, by which a coherent spatial overview…Publication Date 2010
- site conditions
- Vegetation map
- Vegetation samples
- Weighted averaging
- mapping
- phytogeography
- phytososciology
- Library Collection RecordUnderstanding the spatial distribution and variability of soil texture is essential for land use planning and other activities related to agricultural management and environmental protection. This…Publication Date 2013
- soil texture
- land use
- management
- agriculture
- environmental protection
- remote sensing
- mapping
- PingduShandong China
- Library Collection RecordTo conserve ecological connectivity (the ability to support animal movement, gene flow, range shifts, and other ecological and evolutionary processes that require large areas), conservation…Publication Date 2011
- connectivity
- conservation planning
- corridors
- focal species
- landscape conservation cooperatives
- wildlife linkages
- mapping
- conservation
- species richness
- conservation
- USA
- Library Collection RecordIdentification of spatial gradients in ecosystem vulnerability to global climate change and local stressors is an important step in the formulation and implementation of appropriate countermeasures1…Publication Date 2013
- climate change
- mapping
- ecosystem ecology
- conservation
- management
- Asia
- Library Collection RecordTo evaluate the nationwide status of grasslands and their soil organic carbon stocks in Japan, we used 1990 as a base year and estimated: (i) the area and the spatial distribution of grasslands, and…Publication Date 2012
- grassland
- mapping
- soil organic carbon
- Japan
- Library Collection RecordDescription of the Data The Global Agricultural Lands in the Year 2000 data set represents the proportion of land area used as cropland (land used for the cultivation of food) and pasture (land used…Publication Date 2011
- croplands
- pasture
- Data
- mapping
- satellite imagery
- MODIS
- agriculture
- southern Africa
- Library Collection RecordFriday, 20 April 2012: Scientists say the notoriously dry continent of Africa is sitting on a vast reservoir of groundwater. They argue that the total volume of water in aquifers underground is 100…Publication Date 2012
- mapping
- groundwater
- aquifers
- sustanability
- environmental factors
- Africa
- Library Collection RecordGlobally, ecosystems provide services of almost twice the value of global gross national product (Costanza et al., 2006). The Buffalo City Municipality (BCM), South Africa contains biodiversity of…Publication Date 2011
- biodiversity conservation
- South Africa
- Buffalo City
- ecosystem services
- biodiversity
- conservation
- mapping
- degradation
- GIS
- southern Africa
- Library Collection RecordAlso available on CD-ROM. Accompanying map and table in pocket at back of book. (copy one) Accomapnying map and table available on level 3 (copy two) Summary in English and Afrikaans. Vegetation…Publication Date 2007
- ecology
- grasslands
- mapping
- southern Africa
- Library Collection RecordThe Savanna biome covers around 60% of sub-Saharan Africa. The goods and services it provides are utilised and often depended upon by rural communities, commercial farmers and managers of…Publication Date 2011
- remote sensing
- Savanna ecology
- biomass
- spatial ecology
- spatial analysis
- plant biomass
- remote sensing
- fire ecology
- management
- MODIS
- Nature reserves
- savanna
- mapping
- southern Africa