Location factors and dynamics of tree plantation expansion in two coastal river basins in south-central Chile: basis for land use planning

Peña‒Cortés, Fernando; Vergara-Fernández, Cristian; Pincheira‐Ulbrich, Jimmy; Benavente, Francisco Aguilera; Gallardo-Alvarez, Natalia

doi:10.1080/1747423x.2021.1882597

Cited by 10 publications

(5 citation statements)

References 55 publications

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“…Moreover, Markov chains and cellular automata were used to represent the spatial trend of fruit crop dynamics until 2033. However, future studies can explore the predictive capacity of regression models or machine learning algorithms that incorporate environmental variables (e.g., altitude, slope, and water availability) [33,55]. In addition, future studies can build nonpredictive spatial scenarios to support planning and adaptive management in facing dynamic changes in agriculture and fruit crop production in the future [56,57].…”

Section: Discussionmentioning

confidence: 99%

“…The original subuse categories in each cadaster were homogenized into eleven final classes, including: (1) agricultural land, (2) meadows, (3) shrubland, (4) native forest, (5) secondary forest, (6) forest plantations, (7) wetlands, (8) waterbodies, (9) bare land, (10) urban and industrial areas, and (11) snow and glaciers. The change in area was calculated for each category through cross-tabulation to obtain the net change, gain, loss, and persistence [32,33]. All processes were performed using the Crosstab and Land Change Modeler functions in TerrSet.…”

Section: Change In Land Use/land Cover At the Regional Levelmentioning

confidence: 99%

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Agriculture and Temperate Fruit Crop Dynamics in South-Central Chile: Challenges for Fruit Crop Production in La Araucanía Region, Chile

Montenegro-Romero

Vergara-Fernández

Argandoña-Castro

et al. 2022

Land

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The expansion of agricultural, forest plantation, and urban areas is among the main drivers of worldwide land use/cover change. However, little is known about the changes in the extent of highly profitable crops in the temperate zones of South America and their association with other land use/cover changes, especially in south-central Chile, which has experienced massive changes in recent decades. In this context, we aimed to assess land use/cover and fruit crop area changes at the regional and county levels in the Araucanía region, Chile. Hence, the quantity and location of past and future changes were identified using cross-tabulation Markov chains and cellular automata. The results showed that agricultural land and meadows have decreased by 18% and 26%, respectively, between 1997 and 2013, mainly due to the expansion of forest plantations and urban areas. However, the fruit crop area increased by 645% between the years 2000 and 2019 and will continue increasing to 2033. These changes modified the relative weights of economic activities within the region, changing from cattle raising and marginal agriculture to more profitable activities such as fruit crops and forest plantations. Finally, this work shows a need to move toward the spatial monitoring of agriculture and fruit crops within the country.

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Section: Discussionmentioning

confidence: 99%

Section: Change In Land Use/land Cover At the Regional Levelmentioning

confidence: 99%

Agriculture and Temperate Fruit Crop Dynamics in South-Central Chile: Challenges for Fruit Crop Production in La Araucanía Region, Chile

Montenegro-Romero

Vergara-Fernández

Argandoña-Castro

et al. 2022

Land

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“…The reduction in native forest ranged between 1.9% and 13.4% per 10 years (Table 2). Furthermore, a recent study by Peña-Cortés et al [33], conducted in two coastal river basins (Budi and Lingue) in southern Chile (Araucanía region), showed that tree plantations increased by 292% and 196% in 1987-2001 and 2001-2015, respectively. In general, the loss of native forests has been due to the expansion of forest plantations towards the Andean and coastal mountain ranges.…”

Section: Changes In Native Forests and Expansion Of Exotic Tree Plant...mentioning

confidence: 98%

Consequences of Land Use Changes on Native Forest and Agricultural Areas in Central-Southern Chile during the Last Fifty Years

del Pozo,

Catenacci-Aguilera,

Acosta-Gallo

2024

Land

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Chile’s central-south region has experienced significant land use changes in the past fifty years, affecting native forests, agriculture, and urbanization. This article examines these changes and assesses their impact on native forest cover and agricultural land. Agricultural data for Chile (1980–2020) were obtained from public Chilean institutions (INE and ODEPA). Data on land use changes in central and south Chile (1975–2018), analysed from satellite images, were obtained from indexed papers. Urban area expansion in Chile between 1993 and 2020 was examined using publicly available data from MINVIU, Chile. Additionally, photovoltaic park data was sourced from SEA, Chile. Field crop coverage, primarily in central and southern Chile, decreased from 1,080,000 ha in 1980 to 667,000 ha in 2020, with notable decreases observed in cereal and legume crops. Conversely, the coverage of export-oriented orchards and vineyards increased from 194,947 ha to 492,587 ha. Forest plantations expanded significantly, ranging from 18% per decade in northern central Chile to 246% in the Maule and Biobío regions. This was accompanied by a 12.7–27.0% reduction per 10 years in native forest. Urban areas have experienced significant growth of 91% in the last 27 years, concentrated in the Mediterranean climate region. Solar photovoltaic parks have begun to increasingly replace thorn scrub (Espinal) and agricultural land, mirroring transformations seen in other Mediterranean nations like Spain and Portugal.

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“…Nevertheless, since 1997, the country has been improving its capacity to monitor land use/cover change through the national cadaster of native vegetation, and research conducted by academia at various physical and administrative scales (Miranda et al, 2017). The overall results have shown the expansion of forest plantation throughout the south-central area of Chile (Miranda et al, 2017), resulting in the loss of natural vegetation, including native forest and shrubland, and a decreasing in agricultural areas (Heilmayr et al, 2016;Miranda et al, 2017;Peña-Cortés et al, 2021). However, most of the studies published have not considered the analysis of land use/cover changes that have occurred speci cally within the biosphere reserve, nor have they assessed changes within the different management zones (core, buffer, and transition).…”

Section: Introductionmentioning

confidence: 99%

Spatio-temporal Variability of Land Use/Cover in the Araucarias Biosphere Reserve, Chile: Management Guidelines for Sustainable Development.

Ortega-Alul

Vergara-Fernández

Argandoña-Castro

et al. 2023

Preprint

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Biosphere Reserves are one of the main policy instruments for protecting areas of high ecological value. However, more information is needed about land use/cover changes within Biosphere Reserves, specifically considering dynamics in their core, buffer, and transition zones. This study aimed to analyse the dynamics of land use/cover change between 1961 and 2018 and assess future changes from 2018 to 2034 in part of the Araucarias Biosphere Reserve located in south-central Chile. Land use/cover maps were obtained through photointerpretation of aerial photography and satellite images. Land use/cover transitions, gains, losses, and net changes were then calculated for the periods 1961–1974, 1987–2002, and 2002–2018. Futures changes until 2034 were simulated using Markov chains and cellular automata. Results showed that between 1961 and 1987, 95% of the study area remained stable, with small changes associated with the succession of natural vegetation and the abandonment of areas dedicated to crops and livestock. However, between 1987 and 2018, an increased in anthropogenic activity contributed to two wildfire that affected large areas of old-growth forest in the core and buffer zones. The results indicate that the conservation of the core area of the biosphere reserve is threatened by the lack of territorial planning instruments to organise the activities carried out in the buffer and transition areas of the Biosphere Reserve. In the absence of new wildfires, most of the natural vegetation may recover through natural or assisted ecological restoration.

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Location factors and dynamics of tree plantation expansion in two coastal river basins in south-central Chile: basis for land use planning

Cited by 10 publications

References 55 publications

Agriculture and Temperate Fruit Crop Dynamics in South-Central Chile: Challenges for Fruit Crop Production in La Araucanía Region, Chile

Agriculture and Temperate Fruit Crop Dynamics in South-Central Chile: Challenges for Fruit Crop Production in La Araucanía Region, Chile

Consequences of Land Use Changes on Native Forest and Agricultural Areas in Central-Southern Chile during the Last Fifty Years

Spatio-temporal Variability of Land Use/Cover in the Araucarias Biosphere Reserve, Chile: Management Guidelines for Sustainable Development.

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