The relative dependence of Spanish landscape pattern on environmental and geographical variables over time

Ortega, M.; Bunce, R.G.H.; Barrio, José Manuel; Elena-Rosselló, Ramón

doi:10.5424/srf/2008172-01028

Cited by 9 publications

(9 citation statements)

References 25 publications

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“…These combined processes have resulted in important changes in the forest-agriculture interface. Generally speaking, the area covered by crops has decreased, as well as the fragmentation of their landscapes (Ortega et al 2008). Therefore, those types at the extremes of the vulnerability gradient, such as the integrated agroforestry ''dehesas'' or the intermixed fine grained landscapes, have decreased their geographical distribution being increasingly concentrated at their traditional cores respectively in Extremadura and Galicia.…”

Section: Discussionmentioning

confidence: 99%

Landscape vulnerability to wildfires at the forest-agriculture interface: half-century patterns in Spain assessed through the SISPARES monitoring framework

et al. 2011

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Large-scale socioeconomic changes in recent decades have driven shifts in the structure of Spanish rural landscapes, particularly in those located at the forest-agriculture interface (FAI), as well as in their wildfire regime. Using data from more than 200 16 km 2 landscape plots in Spain surveyed between 1956 and 2008 through the SISPARES monitoring framework, we assessed the FAI vulnerability to wildfires and identified the main landscape structural factors related to an increased number of wildfire events. We found that the most vulnerable landscapes were those with high road density, high diversity of land uses and, most importantly, with fine-grained forest-agriculture mixtures. Ignition frequency was lower in those landscapes where crops and woodlands coexisted but distributed in large and well-separated patches, and much lower where both land uses were combined within an integrated production and management system (''dehesas''). We discuss the geographical distribution patterns and temporal trends of the different FAI types during recent decades. We conclude that such approach is useful to forecast the mutual interactions between land use pattern changes and wildfire regime in the Mediterranean agroforestry mosaics. This would also provide an ecological base for developing a complementary, cost-effective and durable passive strategy of wildfire management targeted to modify the inherent FAI susceptibility to ignition events.

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Section: Discussionmentioning

confidence: 99%

Landscape vulnerability to wildfires at the forest-agriculture interface: half-century patterns in Spain assessed through the SISPARES monitoring framework

et al. 2011

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“…Fortuny et al, 2014;Ortega et al, 2008; AIC: Akaike's information criterion; AICc: bias-adjusted AIC; Δ i : AICc differences; w i : AICc weight is the estimated probability that a model is the best model in the set. Viedma, 2008).…”

Section: Variance Partitioning Approach In Landscape Change Researchmentioning

confidence: 99%

Wildfire patterns and landscape changes in Mediterranean oak woodlands

Guiomar

Godinho

Fernandes

et al. 2015

Science of The Total Environment

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• Transitions in Mediterranean oak woodlands (montados) were assessed; • Low spatial connectedness in montado landscape increases its vulnerability; • Changes were mostly explained by fire characteristics and spatial factors; • Large fires have a major role in transitions from montado to pioneer communities. Fire is infrequent in the oak woodlands of southern Portugal (montado) but large and severe fires affected these agro-forestry systems in [2003][2004][2005]. We hypothesised transition from forest to shrubland as a fire-driven process and investigated the links between fire incidence and montado change to other land cover types, particularly those related with the presence of pioneer communities (generically designed in this context as "transitions to early-successional communities"). We present a landscape-scale framework for assessing the probability of transition from montado to pioneer communities, considering three sets of explanatory variables: montado patterns in 1990 and prior changes from montado to early-successional communities (occurred between 1960 and 1990), fire patterns, and spatial factors. These three sets of factors captured 78.2% of the observed variability in the transitions from montado to pioneer vegetation. The contributions of fire patterns and spatial factors were high, respectively 60.6% and 43.4%, the influence of montado patterns and former changes in montado being lower (34.4%). The highest amount of explained variation in the occurrence of transitions from montado to earlysuccessional communities was related to the pure effect of fire patterns (19.9%). Low spatial connectedness in montado landscape can increase vulnerability to changes, namely to pioneer vegetation, but the observed changes were mostly explained by fire characteristics and spatial factors. Among all metrics used to characterize fire patterns and extent, effective mesh size provided the best modelling results. Transitions from montado to pioneer communities are more likely in the presence of high values of the effective mesh size of total burned area. This G R A P H I C A L A B S T R A C T a b s t r a c t a r t i c l e i n f o

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“…Other sources will be used to evaluate land use and land cover dynamics with larger temporal period at regional or national scale. This is the case of the 204 stands distributed in Iberian peninsula and Balearic islands of the SISPARES network, with dates 1956, 1984 and 1998 and a minimum patch size of 1 ha (Ortega et al, 2008). In spite of the potential of this source, the CORINE data was selected due to it cover all territory.…”

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Land use change in a Mediterranean metropolitan region and its periphery: assessment of conservation policies through CORINE Land Cover data and Markov models

Ruiz‐Benito

Cuevas²,

Bravo

et al. 2010

For. syst.

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Sustainable territorial management requires reliable assessment of the impact of conservation policies on landscape structure and dynamics. Euro-Mediterranean regions present a remarkable biodiversity which is linked in part to traditional land use practices and which is currently threatened by global change. The effectiveness of one-decade conservation policies against land use changes was examined in Central Spain (Madrid Autonomous Community). A Markov model of landscape dynamics was parameterized with CORINE Land Cover information and transition matrices were obtained. The methods were applied in both protected and unprotected areas to examine whether the intensity and direction of key land use changes -urbanisation, agricultural intensification and land abandonment-differed significantly depending on the protection status of those areas. Protected areas experienced slower rates of agricultural intensification processes and faster rates of land abandonment, with respect to those which occurred in unprotected areas. It illustrates how simple mathematical tools and models -parameterized with available data-can provide to managers and policy makers useful indicators for conservation policy assessment and identification of land use transitions.Key words: global change; land use and land cover change; traditional and cultural land uses; protected areas and protection categories. ResumenCambio en el uso del suelo en una región Mediterránea metropolitana y su periferia: evaluación de las políticas de conservación mediante datos del CORINE Land Cover y modelos de Markov La gestión sostenible del territorio requiere de análisis realistas sobre el impacto de las políticas de conservación en la estructura y dinámica del paisaje. La región Euro-Mediterránea presenta una biodiversidad remarcable que está unida en parte a las prácticas tradicionales del uso del suelo y que actualmente está amenazada por el cambio global. La efectividad de la implantación de políticas de conservación frente a los cambios en el uso del suelo fue examinada en el centro de España (Comunidad Autónoma de Madrid). Se usaron modelos de Markov para analizar la dinámica del paisaje parametrizados con información del CORINE Land Cover y se obtuvieron las matrices de transición. La metodología se aplicó en áreas protegidas y no protegidas para examinar si la intensidad y dirección de los cambios del uso del suelo claves -urbanización, intensificación agrícola y abandono-difieren significativamente en función del grado de protección. Las áreas protegidas experimentaron menores tasas en el proceso de intensificación agrícola y mayores en el abandono con respecto a las ocurridas en zonas sin protección. Se demuestra cómo modelos y herramientas matemáticas -parametrizados con los datos disponibles-pueden proporcionar a gestores y políticos indicadores útiles para la evaluación de políticas de conservación e identificación de transiciones de uso del suelo.Palabras clave: cambio global; cambios en el uso y cobertura del suelo; usos del suelo tradic...

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The relative dependence of Spanish landscape pattern on environmental and geographical variables over time

Cited by 9 publications

References 25 publications

Landscape vulnerability to wildfires at the forest-agriculture interface: half-century patterns in Spain assessed through the SISPARES monitoring framework

Landscape vulnerability to wildfires at the forest-agriculture interface: half-century patterns in Spain assessed through the SISPARES monitoring framework

Wildfire patterns and landscape changes in Mediterranean oak woodlands

Land use change in a Mediterranean metropolitan region and its periphery: assessment of conservation policies through CORINE Land Cover data and Markov models

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