A Landscape Approach for Detecting and Evaluating Change in a Semi-Arid Environment

Kepner, William G.; Watts, Christopher J.; Edmonds, Curtis M.; Maingi, John K.; Marsh, Stuart E.; Luna, Gonzalo

doi:10.1007/978-94-011-4343-1_16

Cited by 54 publications

(75 citation statements)

References 15 publications

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“…This was also to appreciate the relative separability performance of each band according to the land use classes and to show the performance of the user in assigning certain pixel to a land use and land cover class. The separability criteria were assessed using Jeffries-Matusita index and compared with the divergent index [33]. In combination with the classification accuracy assessment, the quality of the results was checked.…”

Section: Jeffries-matusita Distance Separability and Accuracy Assessmentmentioning

confidence: 99%

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Application of Geo-Information Techniques in Land Use and Land Cover Change Analysis in a Peri-Urban District of Ghana

Appiah

Schröder

Forkuo

et al. 2015

IJGI

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Using Satellite Remote Sensing and Geographic Information System, this paper analyzes the land use and land cover change dynamics in the Bosomtwe District of Ghana, for 1986, 2010 thematic mapper and enhanced thematic Mapper+ (TM/ETM+) images, and 2014 Landsat 8 Operational Land Imager and Thermal Infrared Sensor (OLI/TIS) image. The three images were geo-referenced and processed for classification, using the maximum likelihood classifier algorithm. A Jeffries-Matusita's separability check was used in confirming the degree of spectral separation acceptability of the bands used for each of the land use and land cover classes. The best Kappa hat statistic of classification accuracy was 83%. Land Use and Land Cover (LULC) transition analysis in Environmental Systems Research Institute ESRI's ArcMap was performed. The results of the classification over the three periods showed that built up, bare land and concrete surfaces increased from 1201 in 1986 to 5454 ha in 2010. Dense forest decreased by 2253 ha over the same period and increased by 873 ha by the 2014. Low forest also decreased by 1043 ha in 2010; however, it increased by 13% in 2014. Our findings showed some of the important changes in the land use and land cover patterns in the District. After the urbanization process, coupled with farmland abandonment, between 1986 and 2010, substantial increments in urban land and clear increments in farmland coverage between 1986 and 2014were found to be the reason for vegetation cover decreases. This suggests that major changes in the socio-ecological driving forces affecting landscape dynamics have occurred in the last few decades.

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Section: Jeffries-matusita Distance Separability and Accuracy Assessmentmentioning

confidence: 99%

“…The LULC classes were assigned with the help of the classifier based on the user defined classification schema [33]. This scheme was based on the visual interpretation of the images coupled with the user's familiarity of the study area.…”

Section: Image Classification and Change Detectionmentioning

confidence: 99%

Application of Geo-Information Techniques in Land Use and Land Cover Change Analysis in a Peri-Urban District of Ghana

Appiah

Schröder

Forkuo

et al. 2015

IJGI

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“…Therefore, the Wadi Yarmouk study area receives rainfall quantity more than the Wadi Mujib study area [27]. However, the uplands in the Yarmouk study area has ecosystems in the form of forested upland, which is common for upland in the Mediterranean climatic zone, while the upland and the Plateau area in the Wadi Mujib study area are mostly range lands, which common for arid and semi-arid regions [23].…”

Section: Resultsmentioning

confidence: 96%

“…All of these factors are controlled by topography, especially when there is a high relief topography such as in the two case studies that we studied. For instance, the elevations in the topographical units control the climatic parameter of temperature degrees and the rainfall yearly quantity [23]. Plant cover types and distribution are affected by rainfall regimes and temperature [24,25].…”

Section: Resultsmentioning

confidence: 99%

The Influence of Geology on Landscape Typology in Jordan: Theoretical Understanding and Planning Implications

Odeh

Boulad

Abed

et al. 2017

Land

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Landscape Character Assessment (LCA) has been introduced into Jordan through the MEDSCAPES project. The purpose of this project was to streamline landscape studies and integrate them into the land use planning practices in Jordan. Two areas within the Mediterranean and arid climatic zones of the country were chosen as test areas for the methodology. These were the Yarmouk River drainage basin in the northwest of the country and the Mujib River area in the west of Jordan within the Dead Sea basin. Landscape Character Mapping resulted in 22 and 64 Land Description Units (LDUs) for the Yarmouk and Mujib areas, respectively, which were then classified into 14 landscape types. The factors which control the spatial distributions of these units are geology, land cover, landform, and settlements. However, the study suggests that the underlying geology, which influences topography, impacts indirectly on soil types, climate zones, and human activities, and hence has a predominant influence on the character of these units. Specifically, the transition between the Dead Sea Rift Valley and the adjacent highlands create variations in the topographical relief, climate, water availability, and human settlements. Implementation of LCA in Jordan has done much to highlight geological hazards, such as sinkholes, as constraints to development in certain areas. Here, we described how the LCA process could be implemented in Jordan and how this can help in improving land use management practices in the country.

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“…Studies based on remote-sensing methods have shown periods of relatively high vegetation cover since ca. 1950: in the dune fields of Burkina Faso, which is located in the southwestern Sahara Desert, this period occurred in the late 1990s [81]; it occurred from the 1950s to the mid-1960s in northeastern Australia [82] and from the mid-1980s to the early 1990s in the southwestern United States [83]. In each of these regions, the periods with higher vegetation cover were associated with lower dune activity.…”

Section: Advances In Current Research On Sandy Desertificationmentioning

confidence: 98%

Sandy desertification: Borne on the wind

Wang

2013

Chin. Sci. Bull.

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Sandy desertification is both an inherently interesting bioscience and geoscience topic and an important topic from the perspectives of the ecological environment and food security. It has therefore increasingly attracted the attention of the public, in addition to researchers, government officials, and international organizations. This paper reviews the development of knowledge on sandy desertification, research progress in understanding the physical and biological processes involved in sandy desertification, and the significance of wind activity in determining the increases and decreases in sandy desertification. Based on this review of current research on the mechanisms and processes of sandy desertification, combining geological and biological sciences appears likely to improve our understanding of this complex system, thereby providing a more holistic understanding of sandy desertification at a range of temporal and spatial scales. aeolian desertification, sandy desertification, wind activity, dune activity, physical processes, biological processes Citation:Wang X M. Sandy desertification: Borne on the wind.

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A Landscape Approach for Detecting and Evaluating Change in a Semi-Arid Environment

Cited by 54 publications

References 15 publications

Application of Geo-Information Techniques in Land Use and Land Cover Change Analysis in a Peri-Urban District of Ghana

Application of Geo-Information Techniques in Land Use and Land Cover Change Analysis in a Peri-Urban District of Ghana

The Influence of Geology on Landscape Typology in Jordan: Theoretical Understanding and Planning Implications

Sandy desertification: Borne on the wind

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