Earth Observation and Geospatial Analyses [Working Title]最新文献

The Impact of Land Use and Land Cover Changes on the Nkula Dam in the Middle Shire River Catchment, Malawi 马拉维中夏尔河流域土地利用和土地覆盖变化对恩库拉大坝的影响

Earth Observation and Geospatial Analyses [Working Title] Pub Date : 2019-06-27 DOI: 10.5772/INTECHOPEN.86452

M. K. Mzuza, Weiguo Zhang, F. Kapute, Xiaodao Wei

{"title":"The Impact of Land Use and Land Cover Changes on the Nkula Dam in the Middle Shire River Catchment, Malawi","authors":"M. K. Mzuza, Weiguo Zhang, F. Kapute, Xiaodao Wei","doi":"10.5772/INTECHOPEN.86452","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86452","url":null,"abstract":"Land use and land cover changes over a 26-year period for the middle Shire River catchment, Malawi, in southern Africa, were assessed using geographic information systems (GIS) and remote sensing techniques. The catchment area under study was divided into two sections, western and eastern sides of the Shire River. High rate of deforestation averaging 4.3% per annum was observed and more pronounced in the western side of the river. Rapid population growth and increase in gross domestic product (GDP) are identified as the major drivers of deforestation and forest degradation due to clearing of vast fields for agriculture, land expansion for urban settlement, and cutting down of trees for wood fuel energy. Deforestation in the middle Shire River catchment has resulted into increased soil loss through erosion causing huge accumulation of sediment at the Nkula B Hydroelectric Power Dam downstream and, consequently, causing serious problems with generation of hydroelectricity. Frequent droughts and floods in the area have drastically affected crop production forcing people into cutting down of trees for charcoal as a livelihood strategy. Combined techniques such as GIS, remote sensing, and socioeconomic factors used in this study could be applied in other places where similar challenges occur.","PeriodicalId":11389,"journal":{"name":"Earth Observation and Geospatial Analyses [Working Title]","volume":"23 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83571622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

The Color of Water from Space: A Case Study for Italian Lakes from Sentinel-2 来自太空的水的颜色:来自哨兵2号的意大利湖泊的案例研究

Earth Observation and Geospatial Analyses [Working Title] Pub Date : 2019-06-27 DOI: 10.5772/INTECHOPEN.86596

C. Giardino, Kerttu-Liis Kõks, R. Bolpagni, G. Luciani, G. Candiani, M. Lehmann, H. J. Woerd, M. Bresciani

{"title":"The Color of Water from Space: A Case Study for Italian Lakes from Sentinel-2","authors":"C. Giardino, Kerttu-Liis Kõks, R. Bolpagni, G. Luciani, G. Candiani, M. Lehmann, H. J. Woerd, M. Bresciani","doi":"10.5772/INTECHOPEN.86596","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86596","url":null,"abstract":"Lakes are inestimable renewable natural resources that are under significant pressure by human activities. Monitoring lakes regularly is necessary to understand their dynamics and the drivers of these dynamics to support effective management. Remote sensing by satellite sensors offers a significant opportunity to increase the spatiotemporal coverage of environmental monitoring programs for inland waters. Lake color is a water quality attribute that can be remotely sensed and is independent of the sensor specifications and water type. In this study we used the Multispectral Imager (MSI) on two Sentinel-2 satellites to determine the color of water of 170 Italian lakes during two periods in 2017. Overall, most of the lakes appeared blue in spring and green-yellow in late summer, and in particular, we confirm a blue-water status of the largest lakes in the subalpine ecoregion. The color and its seasonality are consistent with characteristics determined by geomorphology and primary drivers of water quality. This suggests that information about the color of the lakes can contribute to synoptic assessments of the trophic status of lakes. Further ongoing research efforts are focused to extend the mapping over multiple years.","PeriodicalId":11389,"journal":{"name":"Earth Observation and Geospatial Analyses [Working Title]","volume":"10 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-06-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74355440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 13

Application of Topographic Analyses for Mapping Spatial Patterns of Soil Properties 地形分析在土壤性质空间格局制图中的应用

Earth Observation and Geospatial Analyses [Working Title] Pub Date : 2019-06-11 DOI: 10.5772/INTECHOPEN.86109

Xia Li, G. McCarty

引用次数: 12

Advanced Methods for Spatial Analysis of Bioaerosol Long-Range Transport Processes 生物气溶胶远程传输过程空间分析的先进方法

Earth Observation and Geospatial Analyses [Working Title] Pub Date : 2019-05-06 DOI: 10.5772/INTECHOPEN.86132

Daniel A. Pickersgill, H. Müller, V. Després

引用次数: 0

Clay Minerals Mapping from Imaging Spectroscopy 粘土矿物成像光谱制图

Earth Observation and Geospatial Analyses [Working Title] Pub Date : 2019-05-06 DOI: 10.5772/INTECHOPEN.86149

G. Grandjean, X. Briottet, K. Adeline, A. Bourguignon, A. Hohmann

{"title":"Clay Minerals Mapping from Imaging Spectroscopy","authors":"G. Grandjean, X. Briottet, K. Adeline, A. Bourguignon, A. Hohmann","doi":"10.5772/INTECHOPEN.86149","DOIUrl":"https://doi.org/10.5772/INTECHOPEN.86149","url":null,"abstract":"Mapping subsurface clay minerals is an important issue because they have particular behaviors in terms of mechanics and hydrology that directly affects assets laid at the surface such as buildings, houses, etc. They have a direct impact in ground stability due to their swelling capacities, constraining infiltration processes during flooding, especially when moisture is important. So detecting and characterizing clay mineral in soils serve urban planning issues and improve the risk reduction by predicting impacts of subsidence on houses and infrastruc-tures. High-resolution clay maps are thus needed with accurate indications on mineral species and abundances. Clay minerals, known as phyllosilicates, are divided in three main species: smectite, illite, and kaolinite. The smectite group highly contributes to the swelling behavior of soils, and because geotechnical soil analyses are expensive and time-consuming, it is urgent to develop new approaches for mapping clays' spatial distribution by using new technologies, e.g., ground spectrometer or remote hyperspectral cameras [0.4-2.5 μm]. These technics constitute efficient alternatives to conventional methods. We present in this chapter some recent results we got for characterizing clay species and their abundances from spectrometry, used either from a ground spectrometer or from hyperspectral cameras.","PeriodicalId":11389,"journal":{"name":"Earth Observation and Geospatial Analyses [Working Title]","volume":"69 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2019-05-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90416361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7