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Peatland area change in the southern Altay Mountains over the last twenty years based on gis and RS analysis

Frontiers of Earth Science 2014年第4期8卷 558-563页

作者： Huan LI Dingyi XU Yan ZHAO MOE Key Laboratory of Western China's Environmental System Lanzhou University Lanzhou 730000 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China

Analyses results of total peatland area changes in the southern AItay Mountain region over the past 20 years are discussed in this paper. These analyses were based on remote sensing （RS） and geographical information system （gis） studies. Possible control methods are evaluated by comparing these results to other regional records and climate data. The area of the peatland zones was calculated by overlaying a peatland layer of Landsat TM （Thematic Map） image constructed by using supervised classification with a layer of slope based on a digital elevation model （DEM）. The results show that slope layer is crucial to improving the accuracy of peatland extracted from TM images. The peatland area of the Altay Mountains increased from 931.5km^2 in 1990 to 977.7 km^2 in 2010. This trend is consistent with the climate change in this region, due in part to increasing temperatures and precipitation, suggesting possible climate controls on peatland expansion. The increase in the peatland area in the Altay Mountains over the last 20 years has been influenced by the westerlies. Alternatively, changes in the largest highland peatland area of the Zoige Basin, located in the eastern Tibetan Plateau have been influenced by the intensity of the Asian summer monsoons. In addition to increased temperatures, decreased precipitation in the Zoige Basin and increased precipitation in the Altay Mountains, due to varied patterns of atmospheric circulation, are the probable causes for driving the change differences in these two peatland areas.

关键词： RS image DEM image gis analysis peat-land area change the Altay Mountains

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Multi-identity planning process in a studio course： Integrative planning in multiidentity environments

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Frontiers of Architectural Research 2016年第3期5卷 279-289页

作者： Dalit Shach-Pinsly Idan Porat Faculty of Architecture and Town Planning The Technion liT Haifa 32000 Israel

The ptanning process in a planning studio demonstrates a microcosm of diverse concepts of ideotogies and identities seeking acknowtedgment and spatial recognition. In the modern world of muitipte and dynamic identities and ideologies, aspiring for the self-recognition of regions, towns, and communities, a place-based identity has become a core aspect that needs to be taken into planning consideration. The anatytic planning method used is iterative of both topdown and bottom-up approaches, thereby creating multi-dimension and coherent planning atternatives where spatial sotutions arise from communities along their changing processes. We present two spatiat atternative plans that were developed in the studio course and are based on this fine of thinking. Resutts were very dynamic aspiring complex plans, which are also highty appticable and flexible, thereby addressing a wide range of ideotogies and identities.

关键词： Multi-criteria Planning studio gis analysis Place-based identity Multi-identity

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Changes in Mediterranean Coastline According to the Coastal Type and Land Cover under Climate Change:The Case of South-east Spain

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Journal of Geographical Research 2023年第2期6卷 34-47页

作者： Pedro Marcet Llorens JoséNavarro-Pedreño Departamento de Agroquímica y Medio Ambiente Universidad Miguel Hernández de ElcheAvd.de la Universidad SNElcheAlicante03202Spain

Coastline changes were analyzed considering the land cover types and the analysis of the causes that have determined these changes during the past decades.Through the overlapping of aerial photographs and gis analysis,the results showed that the land surface increased with respect to the previous stage,gaining terrain to the sea,but this increment was caused by anthropogenic processes.In fact,without human pressure,the land surface beside the coastal line would have decreased,especially on the sandy beaches and coastal dunes.Therefore,the beaches are one of the most vulnerable ecosystems and geomorphological systems due to erosion and lack of sediment supply associated with the modified river courses(i.***.by the construction of reservoirs,concrete channeling,etc.),the inner land use changes,and the effects of global warming on the sea level.Climate change studies predict specific increases in the sea level along the coast.The aim of this work is to know if anthropic activity can reverse the effects of sea level rise and coastal erosion.In fact,it has been done for decades with measures aimed to correct impacts and favour economic activity(i.***.maintaining tourism resources)and not from the environmental issues.

关键词： Aerial photography Coastal changes Coastal erosion gis analysis Sea level

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Potential availability of non-woody biomass feedstock for pellet production within the Republic of Ireland

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International Journal of Agricultural and Biological Engineering 2010年第1期3卷 63-73页

作者： Anthony Nolan Kevin Mc Donnell Ger J.Devlin John P.Carroll John Finnan Biosystems Engineering UCD School of AgricultureFood Science and Veterinary MedicineUniversity College DublinBelfieldDublin 4Ireland Teagasc Crops Research Centre Oak ParkCarlowIreland

The threat of increasing fuel prices and climate change necessitates the need for clean,renewable and independent energy sources.A gis(Geographical Information Systems)model was developed using Arcgis 9.2 to analyze the availability of non-woody biomass(wheat,oat,barley and rape straw,willow and miscanthus)for pellet production in Ireland.Utilization within the heating and electricity sector would displace currently used fossil fuels with cleaner,carbon neutral non-woody residues.The aim of the analysis was to determine the total hectares of biomass within Ireland and compute the potential non-woody biomass yield.The greatest potential source of biomass for pelleting is cereal straw.Within the Republic of Ireland the South-East,South-West and Mid-East of Ireland have the greatest biomass yield for pellet production and likely to be most economically viable.Non-woody biomass has a realistic potential to displace fossil fuels within the heating and electricity sector resulting in CO2 mitigation.

关键词： biomass pellet production non-woody biomass gis analysis renewable energy source CO2 mitigation

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Geo-Spatial analysis of Oil Spill Distribution and Susceptibility in the Niger Delta Region of Nigeria

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Journal of Geographic Information System 2016年第4期8卷 438-456页

作者： Shittu Whanda Olalekan Adekola Bashir Adamu Sani Yahaya Prem C. Pandey Environment and Safequard Unit Nigeria Erosion and Watershed Management Project (NEWMAP) Gombe State Nigeria

Oil spill occurrence during exploration, production and distribution can cause deleterious impact on the environment. Contamination of local streams/rivers, farmlands, forest resources and biodiversity in oil producing areas presents strong significant possibility of significant harm to human health. Geo-information technologies present new opportunities for assessing stress environment and ways of determining exposure susceptibility in such areas. The study assesses the geographical distribution of oil-spills cluster and pattern using three geospatial techniques with ground data at 443 oil-spill incident sites from 1985-2008. The places with high (high-volume/ large impact/close proximity to communities) and low incident (low-volume/less impact/far-distance) are related to the quantity of oil-spills identified within those communities considered susceptible to spill impact and possible exposure. While the average nearest neighborhood analysis showed a probability that oil-spill distribution in the area is clustered (ratio < 1 with index value 0.19), the Getis-Ord General G test indicated that the oil-spill with high quantities (volume) discharge are significantly clustered within every 400 m. The Moran’s I index indicted that there is <1% likelihood that the clusters are as a result of random chance. These findings will help to combat the environmental problems and risks of prolong exposure to petroleum hydrocarbons by addressing future incidents or relocating oil facilities/communities and positioning of rapid response strategies.

关键词： Oil Spills gis analysis Third Party Damage Interdiction Pollutant Linkages

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gis-based Village Layout Planning in Towns: A Case Study of Fengyang Town, Fenxi County, Jiangxi Province

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Journal of Landscape Research 2016年第5期8卷 11-14页

作者： WANG Ying Col ege of City Construction Jiangxi Normal University

Village layout planning is a fundamental work in the construction of beautiful countryside, and also a global work involving vital interests of vast farmers. Taking Fengyang Town of Fenxi County, Jiangxi Province for example, this paper applied Arc gis to analyze natural facors, social economy, and construction factors quantitatively by evaluating development and construction conditions of each village comprehensively from the perspective of urban-rural integration. Classifying the villages into 4 types, namely urban reform type, concentrated development type, controlled construction type and relocation type, this paper tried to guide the scattered rural settlements to the intensive development.

关键词： gis analysis Village layout planning Fengyang Town

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