Land-Use Dynamics and Socioeconomic Change: An Example from the Polop Alto Valley

1999 ◽  
Vol 64 (4) ◽  
pp. 609-634 ◽  
Author(s):  
C. Michael Barton ◽  
Joan Bernabeu ◽  
J. Emili Aura ◽  
Oreto García

AbstractThe Polop Alto valley, in eastern Spain, serves as the focus of a study of long-term temporal and spatial dynamics in human land use. The data discussed here derive from intensive, pedestrian, non-site survey. We employ the concept of artifact taphonomy to assess the various natural and cultural processes responsible for accumulation and distribution patterns of artifacts. Our results suggest that the most significant land-use changes in the Polop Alto took place at the end of the Pleistocene and accompanying the late Neolithic, while much less notable changes in land-use patterns are associated with the Middle-Upper Paleolithic transition and the initial use of domestic plants and animals in the valley.

2007 ◽  
Vol 34 (4) ◽  
pp. 664-686 ◽  
Author(s):  
Moira L Zellner

Rapidly declining groundwater levels since the early 1990s have raised serious concern in Monroe County, Michigan. Hydrological studies suggest that land-use changes have caused this decline. The mechanisms linking land-use and groundwater dynamics are not clear, however. In this paper I present WULUM, the Water-Use and Land-Use Model, an agent-based model that serves as an analytical framework to understand how these processes interact to create the observed patterns of resource depletion, and to suggest policies to reverse the process. The land-use component includes the main groundwater extractors in the county—stone quarries, golf courses, farms, and households. The groundwater component includes the glacial deposits and the underlying bedrock acquifer. The behavior of water users is defined by simple rules that determine their location and consumption. The dynamics of groundwater are represented through infiltration and diffusion rules between each cell and its immediate neighbors. Initial explorations with the model showed that land-use patterns contributed significantly to groundwater declines, while eliminating quarry dewatering did not entirely solve the problem. Both low-density and high-density zoning restrictions improved aquifer conditions over medium-density development, suggesting a nonlinear relationship between intensity of residential use and groundwater levels. Moreover, of all the natural and policy variables, zoning had the greatest influence on urban settlement and therefore on resource consumption.


The Holocene ◽  
2019 ◽  
Vol 29 (10) ◽  
pp. 1572-1586 ◽  
Author(s):  
Daniel Knitter ◽  
Jan Piet Brozio ◽  
Walter Dörfler ◽  
Rainer Duttmann ◽  
Ingo Feeser ◽  
...  

How did socio-cultural transformation processes change land-use patterns? Throughout the last 50 years, outstanding comprehensive geographic, archaeobiological, and archaeological data have been produced for the area of Oldenburger Graben, Schleswig-Holstein, Germany. Based on this exceptional data set, we are able to study the land-use patterns for a period ranging from the Final Mesolithic until the Late Neolithic (4600–1700 BCE). By application of fuzzy modeling techniques, these patterns are investigated diachronically in order to assess the scale of transformations between the different archaeological phases. Based on nutrient requirements and proposed dietary composition estimates derived from empirical archaeobotanical, archaeozoological, and stable isotope data, the required extent of the areas for different land-use practices are modeled. This information is made spatially explicit using a fuzzy model that reconstructs areas of potential vegetation and land-use for each transformation phase. Pollen data are used to validate the type and extent of land-use categories. The model results are used to test hypotheses on the dynamics of socio-cultural transformations: can we observe a diversification of land-use patterns over time or does continuity of land-use practices prevail? By integrating the different lines of evidence within a spatially explicit modeling approach, we reach a new quality of data analysis with a high degree of contextualization. This allows testing of hypotheses about Neolithic transformation processes by an explicit adjustment of our model assumptions, variables, and parameters.


2018 ◽  
Vol 93 (1) ◽  
pp. 48-88
Author(s):  
Lisbeth Prøsch-Danielsen ◽  
Christopher Prescott ◽  
Mads Kähler Holst

Zusammenfassung Basierend auf einer Untersuchung der ökologischen und archäologischen Hinterlassenschaften für Jæren, Südwest-Norwegen, wird vorgeschlagen, dass der Übergang zu einer agrar-pastoralen Wirtschaft und Gesellschaft am Übergang vom mittleren zum späten Neolithikum (2400–2350 v. Chr.) erfolgte und es in Folge zu einer raschen Strukturierung der besiedelten Kulturlandschaften kam. In den folgenden Jahrzehnten und Jahrhunderten entwickelte sich die Gesellschaft auf dieser Basis fort. >Eines der charakteristischen Merkmale der damaligen Landschaften ist, dass diese umfassend in das soziale und rituelle Leben integriert wurden, was auf lokaler Ebene zu einer Zonierung der Landschaft mit jeweils deutlichen Unterschieden in den wirtschaftlichen, sozialen und kulturellen Ausdrucksformen führte. In den offenen, gras- und heidedominierten Küstenzonen manifestiert sich der Befund auf monumentaler und ritueller Ebene, während geeignete quartäre Lagerstätten als Zonen unterschiedlich intensiven Getreideanbaus genutzt wurden. Die beschriebenen Landschaften entwickelten sich als Reaktion auf eine nachhaltige Wirtschaftspraxis, die eine kontinuierliche Ausweitung der Beweidung, eine Intensivierung der Getreideproduktion und den Zugang zu Kommunikationswegen umfasste. Unterschiede im Nutzungsdruck, in der Produktion und in der Wirtschaftsstrategie spiegeln eine Reihe von Umweltparametern wider. Somit korrelieren die Aktivitätszonen weitgehend mit physikalischen Eigenschaften der Landschaft, was offensichtlich sowohl einen adaptiven Aspekt in der Wirtschaft als auch Muster einer umfassenden Ressourcenausnutzung der Zonen widerspiegelt, etwa in der Kombination von Getreideproduktion, Wanderweidewirtschaft, Jagd und Zugang zu maritimen Engstellen. Zur Interpretation schlagen die Autoren ein Modell sozialer und wirtschaftlicher Organisationen und Interaktionen in der Region Jæren vor, basierend auf den Verteilungen mehrerer Kategorien archäologischer Funde. Das Modell präsentiert eine Reihe voneinander abhängiger Zonen innerhalb einer einheitlichen, aber diversifizierten Wirtschaft mit Querschnittsaktivitäten und Mobilitätsmustern. Der präsentierte Ansatz stellt eine Alternative zu bestehenden Hierarchiemodellen innerhalb begrenzter Gebiete dar. Die Landschaftszonierung in Jæren ähnelt jener in Westskandinavien, einschließlich Jütlands, Dänemark. Aus diesem Grund war die Einführung einer subsistenzorientierten, Feldbau und Weidewirtschaft kombinierenden Landwirtschaft in Jæren von externen Impulsen abhängig.


2020 ◽  
Author(s):  
Md. Zakir Hossain ◽  
Nitin K. Tripathi ◽  
Michael J. Phillips

Abstract Aquaculture, particularly shrimp farming in the Kandaleru creek area, has shown spectacular growth within the last two decades. However, economic prosperity which was the driving force for shrimp farming expansion, has also had a significant negative impact on land use changes and creek water quality causing shrimp health hazards. Using a hypothesis that the discharge of shrimp farming effluents may have exceeded the carrying capacity (CC) of the creek water, the environmental CC of Kandaleru creek was assessed based on total nitrogen (TN) input. Remote sensing (RS) and image enhancement techniques integrated with geographical information systems (GIS) were applied to quantify and determine the changes in land use patterns in the creek area. GIS and a numeric model were used to compute the TN load in three different salinity zones to determine the CC status. The study revealed that exceeding the CC of the creek along with increasing shrimp farms, decreasing natural resources and changes in land use patterns.


2021 ◽  
Vol 13 (17) ◽  
pp. 9525
Author(s):  
René Ulloa-Espíndola ◽  
Susana Martín-Fernández

Rapid urban growth has historically led to changes in land use patterns and the degradation of natural resources and the urban environment. Uncontrolled growth of urban areas in the city of Quito has continued to the present day since 1960s, aggravated by illegal or irregular new settlements. The main objective of this paper is to generate spatial predictions of these types of urban settlements and land use changes in 2023, 2028 and 2038, applying the Dinamica EGO cellular automata and multivariable software. The study area was the Machachi Valley between the south of the city of Quito and the rural localities of Alóag and Machachi. The results demonstrate the accuracy of the model and its applicability, thanks to the use of 15 social, physical and climate predictors and the validation process. The analysis of the land use changes throughout the study area shows that urban land use will undergo the greatest net increase. Growth in the south of Quito is predicted to increase by as much as 35% between 2018 and 2038 where new highly vulnerable urban settlements can appear. Native forests in the Andes and forest plantations are expected to decline in the study area due to their substitution by shrub vegetation or agriculture and livestock land use. The implementation of policies to control the land market and protect natural areas could help to mitigate the continuous deterioration of urban and forest areas.


1981 ◽  
Vol 46 (3) ◽  
pp. 648-656 ◽  
Author(s):  
M. C. Hall

In a recent exchange Munday and Lincoln (1979) and Bettinger (1979a) debate the conclusions reached by Bettinger (1977) regarding diachronic variation in the prehistoric land-use patterns of Owens Valley, California. There are several related sources of error in Bettinger's quantitative and statistical operations that were not clarified or discussed in the published arguments. An evaluation of their potential effect on the analysis conducted by Bettinger (1975) lends considerable support to the basic assertion of Munday and Lincoln that Bettinger (1977) did not fully appreciate alternative explanations of the spatial and temporal variation he observed in site and artifact distributions in Owens Valley. Two of the three "adaptive shifts" in land-use patterns proposed by Bettinger are not supported by the published data.


2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
Stephen Kitina Nyamasyo ◽  
Bonface Odiara Kihima

In Kenya, wildlife numbers have drastically declined due to land use changes (LUCs) over the past three decades. This has affected wildlife habitats by converting them into farmlands and human settlements. This study used remote sensing data from landsat satellite to analyze the changing land use patterns between 1980 and 2013 and their impacts on wild ungulates in KWE. The objective of the study was to map out LUCs, determine the possible causes of LUCs, and examine the effects of LUCs on wild ungulates. The results showed a noticeable increase in the size of farmland, settlement, and other lands and a decline in forestland, grassland, wetland, and woodland. The main possible causes of LUC were found to be agricultural expansions, human population dynamics, economic factors, changing land tenure policy, politics, and sociocultural factors. The main effects of LUCs on wild ungulates in KWE include a decline in wild ungulate numbers, habitat destruction, increased human-wildlife conflicts, land degradation, and displacement of wild ungulates by livestock. The study recommends land use zoning of KWE and establishment of an effective and efficient wildlife benefit-sharing scheme(s).


Oryx ◽  
2019 ◽  
pp. 1-11 ◽  
Author(s):  
A. M. Tchassem F. ◽  
T. M. Doherty-Bone ◽  
M. M. Kameni N. ◽  
W. P. Tapondjou N. ◽  
J. L. Tamesse ◽  
...  

Abstract Amphibians on African mountains are threatened by habitat loss and fragmentation, pollution, disease and climate change. In particular, there have been recent reports of declines of montane endemic frogs in Cameroon. Mount Bamboutos, although home to numerous species of endemic amphibians, has no official protection and its amphibian populations have so far not been studied quantitatively. We surveyed frog assemblages on this mountain along a gradient of forest modification over a 2-year period. Through visual encounter surveys stratified across forest and farmland, we found that threatened montane amphibian species are closely associated with forested areas, particularly the Critically Endangered Leptodactylodon axillaris and Endangered Leptodactylodon perreti, Astylosternus ranoides and Cardioglossa oreas. Using the updated inventory of amphibians, which includes species with broader ranges across Africa, we found 69% of amphibian species on Mount Bamboutos to be threatened. We did not record several species present in historical records, which suggests they may have disappeared from this mountain, including Cardioglossa pulchra, Phrynobatrachus steindachneri, Phrynobatrachus werneri, Sclerophrys villiersi, Werneria bambutensis and Wolterstorffina mirei. The pattern of change detected in the amphibian community is consistent with declines on other mountains in the country, with a loss of Phrynobatrachus, Werneria and Cardioglossa spp., but persistence of Astylosternus, Arthroleptis and Leptodacty-lodon. The observed relationships of land-use patterns and amphibian diversity suggest that ongoing land-use changes could extirpate the remaining montane endemic frog species, particularly L. axillaris and L. perreti. Preserving a network of connected forest patches is therefore critical to save the endemic amphibians of Mount Bamboutos.


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