Land degradation and mitigation policies in the mediterranean region. A brief commentary

Land degradation is more evident where conditions of environmental vulnerability already exist because of arid climate and unsustainable forms of land exploitation. Consequently, semi-arid and dry areas have been identified as vulnerable land, requiring attention from both science and policy perspectives. In some regions, such as the Mediterranean region, land degradation is particularly intense, although there are no extreme ecological conditions. In these contexts, a wide range of formal and informal responses is necessary to face particularly complex and spatially differentiated territorial processes. However, the fit of responses has been demonstrated to be different over time and space according to the underlying socioeconomic context and the specific ecological conditions. The present commentary discusses this sort of \u201centropy\u201d in the policy response to land degradation in Southern Europe, outlining the intrinsic complexity of human\u2013nature dynamics at the base of such processes. Reflecting the need of differentiated regional strategies and more specific national measures to combat desertification, three policy frameworks (agro-environmental, economic, social) with an indirect impact on fighting land degradation have been considered, delineating the importance of policy assemblages. Finally, the importance of policy impact assessment methodologies was highlighted, focusing on the possible responses reinforcing a continental strategy against land degradation. By evidencing the role of participatory planning, developmental policies indirectly addressing land degradation reveal to be an important vector of more specific measures abating desertification risk, creating, in turn, a favorable context for direct interventions of mitigation or adaptation to climate change

Uncovering the role of biophysical factors and socioeconomic forces shaping soil sensitivity to degradation: insights from Italy

Following an operational framework derived from earlier research, our study research estimates the specific contribution of biophysical and socioeconomic factors to soil sensitivity to degradation at two-time points (Early-1990s and Early-2010s) in Italy, a Mediterranean hotspot for desertification risk. A total of 34 variables associated (directly or, at least, indirectly) with different processes of soil degradation (erosion, salinization, sealing, contamination, and compaction) and climate change were considered here, delineating the predominant (underlying) cause (i.e., biophysical or socioeconomic). This set of variables represented the largest (quantitative) information available from national and international data sources including official statistics at both national and European scale. Contribution of biophysical and socioeconomic dimensions to soil sensitivity to degradation was heterogeneous in Italy, with the level of soil sensitivity to biophysical factors being the highest in less accessible, natural areas mostly located in hilly and mountainous districts. The highest level of soil sensitivity to socioeconomic drivers was instead observed in more accessible locations around large cities and flat rural districts with crop intensification and low (but increasing) population density. All these factors delineated an enlarged divide in environmental quality between (i) flat and upland districts, and between (ii) Northern and Southern Italian regions. These findings suggest the appropriateness of policy strategies protecting soils with a strong place-specific knowledge, i.e., based on permanent monitoring of local (biophysical and socioeconomic) conditions

Economic structure, urban growth and spatial distribution of soil sealing: An exploratory analysis

This study investigates the spatial distribution of soil sealing in Italy by adopting an exploratory approach of multivariate statistics and spatial analysis. The study demonstrates how simple indicators developed on a local scale can provide relevant indications for territorial analysis and environmental monitoring. Each local system was profiled using a principal component analysis, with the support of a high-resolution landuse map, basing on the geographical distribution of the surface area covered by each of 12 levels of soil sealing. For each spatial unit, two indicators, representing intensity and frequency of soil sealing, have been proposed. The results suggest that the spatial distribution of soil sealing rates in Italy differs, at least in part, from the population dynamics that are reflected in the distribution of urban settlements, while the economic structure and the density of infrastructures are important territorial constraints to soil sealing. The analysis outlines differences in the territorial structure of residential/commercial settlements: these elements are associated with distinctive urban models and reflect the transition from a polycentric morphology, which is more typical of the Po River Valley, to mono-centric and more compact structures that prevail in Southern Italy. It emerges that quantitative analyses with high spatial resolution - such as those proposed in this study - have direct implications for policies of urban containment in light of local sustainability

Natural population growth and urban management in metropolitan regions: Insights from pre-crisis and post-crisis Athens, Greece

Between the 1970s and the 1990s, cities in Southern Europe experienced a progressive delocalisation of population, settlements and activities over larger regions. Economic downturns have increasingly influenced more recent waves of metropolitan growth, shaping differentiated patterns of urban change. While some cities evolved towards accelerated population dynamics in central districts responding to re-urbanisation impulses, other agglomerations were intrinsically bounded in a sort of ‘late suburbanisation’, with demographic shrinkage of both inner districts and rural areas, and uneven expansion of suburban population. By providing a comprehensive interpretation of the socioeconomic mechanisms underlying recent urban expansion, this study illustrates a diachronic analysis of population dynamics over multiple spatial scales and time frames in a metropolitan region of Southern Europe (Athens, Greece) between 1999 and 2019. Natural population balance was investigated vis à vis selected territorial indicators using descriptive, inferential and multivariate statistics. Results of the analysis identify different social forces underlying suburban population growth during economic expansion (2000s) and recession (2010s), evidencing a distinctive response of local communities to economic downturns that depends mostly on the background context (affluent versus disadvantaged neighbourhoods). Given the multiplicity of territorial dimensions involved in urban growth, our findings highlight how economic downturns distinctively shape metropolitan development based on locally differentiated demographic dynamics

Recession, local fertility, and urban sustainability: Results of a quasi-experiment in greece, 1991–2018

Fertility is a spatially non-stationary property of regional demographic systems. Despite the wealth of quantitative (micro–macro) information delineating short-term population dynamics in advanced economies, the contribution of economic downturns to local fertility has still been under-investigated along urban–rural gradients, especially in low-fertility contexts. Recent studies have assumed suburban fertility rates as systematically higher than urban and rural fertility rates. This assumption (hereafter known as the “suburban fertility hypothesis”) has been grounded on stylized facts and spatial regularities in advanced economies that reflect a significant role of both macro (contextual) and micro (behavioral) factors that positively influence fertility in suburban locations. To test the suburban fertility hypothesis at the macro-scale, the present study compares gross fertility rates from seven regional units of the Athens metropolitan area between 1991 and 2018. A refined spatial analysis of gross fertility rates during an economic expansion (1999–2008) and recession (2009–2018) was carried out in 115 urban, suburban, and rural municipalities of the same area. Experiencing sequential waves of economic expansion and recession, Athens’ sociodemographic dynamics were considered a sort of “quasi-experiment” for Southern Europe, linking late suburbanization with the multiple impacts of (rapid) economic downturns. Compared with both urban and rural locations, a higher fertility rate in suburban municipalities (15–20 km away from downtown Athens) was observed during the study period. However, a subtle distinction was observed during the economic expansion versus the recession. In the first period, the highest birth rates were recorded in industrial locations west of Athens, hosting economically disadvantaged communities with a relatively young population structure. With the recession, the highest fertility was associated with residential and service-specialized (wealthier) locations east of Athens, attracting resident population from neighboring areas, and better responding to crisis. The results of our study document how recent urban expansion and economic downturns have intrinsically shaped fertility dynamics, with implications for urban sustainability and social cohesion of metropolitan regions

Re-framing the latent nexus between land-use change, urbanization and demographic transitions in advanced economies

The linkage between land-use change and demographic transitions in advanced countries has becoming increasingly complex because of the mutual interplay of environmental and socioeconomic spheres influencing the degree of sustainability of both regional and local developmental processes. The relationship between urbanization and economic development has been relatively well investigated by clarifying the consequent impacts on population dynamics. In the early phases of urbanization and economic development, population grew at a particularly high rate, declining (more or less rapidly) in the subsequent time interval. Improving income and education opportunities in urban settings resulted in further urbanization, leading to progressively lower fertility. At the same time, a more general view on the relationship between land-use change and demographic transition focusing on a broader spectrum of landscape processes (including farmland abandonment and forest expansion) at larger spatial scales (from regional to country and continental scale) is increasingly required. The present study provides an integrated view of the relationship between land-use change, urbanization, and demographic transitions with specific focus on Europe. Considering divergent processes of landscape transformations in a unified socioeconomic view may evidence the intimate linkage with recent population trends in both urban and rural areas

Climate aridity and the geographical shift of olive trees in a mediterranean northern region

Climate change leverages landscape transformations and exerts variable pressure on natural environments and rural systems. Earlier studies outlined how Mediterranean Europe has be-come a global hotspot of climate warming and land use change. The present work assumes the olive tree, a typical Mediterranean crop, as a candidate bioclimatic indicator, delineating the latent impact of climate aridity on traditional cropping systems at the northern range of the biogeographical distribution of the olive tree. Since the olive tree follows a well-defined latitude gradient with a pro-gressive decline in both frequency and density moving toward the north, we considered Italy as an appropriate case to investigate how climate change may (directly or indirectly) influence the spatial distribution of this crop. By adopting an exploratory approach grounded in the quali-quantitative analysis of official statistics, the present study investigates long-term changes over time in the spatial distribution of the olive tree surface area in Northern Italy, a region traditionally considered outside the ecological range of the species because of unsuitable climate conditions. Olive tree cul-tivated areas increased in Northern Italy, especially in flat districts and upland areas, while they decreased in Central and Southern Italy under optimal climate conditions, mostly because of land abandonment. The most intense expansion of the olive tree surface area in Italy was observed in the northern region between 1992 and 2000 and corresponded with the intensification of winter droughts during the late 1980s and the early 1990s and local warming since the mid-1980s. Assuming the intrinsic role of farmers in the expansion of the olive tree into the suboptimal land of Northern Italy, the empirical results of our study suggest how climate aridity and local warming may underlie the shift toward the north in the geographical range of the olive tree in the Mediterranean Basin. We finally discussed the implications of the olive range shift as a part of a possible landscape scenario for a more arid future

Correction to: Long-term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain) (Euro-Mediterranean Journal for Environmental Integration, (2021), 6, 2, (58), 10.1007/s41207-021-00268-1)

The article Long‑term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain), written by Jesús Rodrigo‑Comino, José María Senciales‑Gonzalez, Yang Yu, Luca Salvati, Antonio Gimenez‑Morera and Artemi Cerdà, was originally published electronically on the publisher’s internet portal on 18 June 2021 without open access. With the author(s)’ decision to opt for Open Choice the copyright of the article changed on 3 July 2021 to © The Author(s) 2021 and the article is forthwith distributed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http:// creat iveco mmons. org/ licen ses/ by/4.0. The original article has been corrected

Long-term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain)

Economic, social, and climatic conditions affect agricultural production. Those changes are relevant to the rainfed agricultural areas of the Mediterranean Belt, including Spain—the largest producer of olive oil in the world. However, little is known about the effect of the climate on olive production and farmer income. In this study, the correlation between changes in rainfall and total olive production was examined using a long-term dataset (28 years) on conventional rainfed production and tillage soil management. The dataset focused on different olive groves in the municipality of Bailén (Jaén, Andalusia) that have been owned by the same farmer since 1966. The province of Jaén is the region of Spain with the highest production of olive oil and the largest area of olive groves. The data included annual rainfall, production per plot and the price of olives. After calculating missing data to complete the rainfall series, pairwise correlation analysis with nonparametric Spearman's rank coefficients and principal component analysis were used to process the data. The results showed that higher production coincided with increased rainfall during August and December. Therefore, we concluded that the impact of rainfall on olive production is variable and depends on drought intensity and the monthly rainfall distribution. An economic study showed that farmer income was highly dependent on the seasonal distribution of the rainfall among other factors such as the price of olives. Farmer income was low during drought periods, indicating that rainfed agriculture is perceived by farmers as unsustainable due to the resulting highly variable income. This study could help to prevent risks to food security in the future. We recognise that other key factors have also been important influences on the fluctuations in olive production over the years, such as soil properties and plant status. However, cultivating olives without irrigation—depending only on the total rainfall amount and rainfall intensity to supply all of the water consumed by the plants—is very risky too. This research demonstrates that the subsistence of Mediterranean rainfed olive farmers can be highly dependent on the rainfall conditions

Toward a new urban cycle? A closer look to sprawl, demographic transitions and the environment in Europe

Urban growth is a largely debated issue in social science. Specific forms of metropolitan expansion—including sprawl—involve multiple and fascinating research dimensions, making mixed (quali-quantitative) analysis of this phenomenon particularly complex and challenging at the same time. Urban sprawl has attracting the attention of multidisciplinary studies defining nature, dynamics, and consequences that dispersed low-density settlements are having on biophysical and socioeconomic contexts worldwide. The present commentary provides a brief overview on nature and implications of the latent relationship between sprawl, demographic dynamics, and background socio-environmental contexts with special focus on Europe. Empirical evidence supports the idea that spatial planning should cope more effectively with the increasing environmental and socioeconomic exposure of European regions to sprawl and demographic transitions, being progressively far away from a traditional urban cycle with sequential waves of urbanization, suburbanization, counter-urbanization, and re-urbanization. Growing socio-ecological vulnerability of metropolitan regions was evaluated based on a literature review demonstrating how a better comprehension of the intimate linkage between long-term demographic dynamics and urban cycles is necessary to inform fine-tuned policies controlling sprawl and promoting a sustainable management of peri-urban land