Готові списки джерел за темами / Mapping NE Arnhem Land

Добірка наукової літератури з теми "Mapping NE Arnhem Land"

Автор: Grafiati

Опубліковано: 10 грудня 2022

Оновлено: 28 січня 2023

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Статті в журналах з теми "Mapping NE Arnhem Land"

Petheram, L., K. K. Zander, B. M. Campbell, C. High, and N. Stacey. "‘Strange changes’: Indigenous perspectives of climate change and adaptation in NE Arnhem Land (Australia)." Global Environmental Change 20, no. 4 (October 2010): 681–92. http://dx.doi.org/10.1016/j.gloenvcha.2010.05.002.

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Lane, Richard, Geoff Beckitt, and Mark Duffett. "3D geological mapping and potential field modelling of West Arnhem Land, Northern Territory." ASEG Extended Abstracts 2007, no. 1 (December 1, 2007): 1–9. http://dx.doi.org/10.1071/aseg2007ab072.

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Edwards, Andrew C., and Jeremy Russell-Smith. "Ecological thresholds and the status of fire-sensitive vegetation in western Arnhem Land, northern Australia: implications for management." International Journal of Wildland Fire 18, no. 2 (2009): 127. http://dx.doi.org/10.1071/wf08008.

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The paper examines the application of the ecological thresholds concept to fire management issues concerning fire-sensitive vegetation types associated with the remote, biodiversity-rich, sandstone Arnhem Plateau, in western Arnhem Land, monsoonal northern Australia. In the absence of detailed assessments of fire regime impacts on component biota such as exist for adjoining Nitmiluk and World Heritage Kakadu National Parks, the paper builds on validated 16-year fire history and vegetation structural mapping products derived principally from Landsat-scale imagery, to apply critical ecological thresholds criteria as defined by fire regime parameters for assessing the status of fire-sensitive habitat and species elements. Assembled data indicate that the 24 000 km2 study region today experiences fire regimes characterised generally by high annual frequencies (mean = 36.6%) of large (>10 km2) fires that occur mostly in the late dry season under severe fire-weather conditions. Collectively, such conditions substantially exceed defined ecological thresholds for significant proportions of fire-sensitive indicator rain forest and heath vegetation types, and the long-lived obligate seeder conifer tree species, Callitris intratropica. Thresholds criteria are recognised as an effective tool for informing ecological fire management in a variety of geographic settings.

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Price, Owen F., Jeremy Russell-Smith, and Felicity Watt. "The influence of prescribed fire on the extent of wildfire in savanna landscapes of western Arnhem Land, Australia." International Journal of Wildland Fire 21, no. 3 (2012): 297. http://dx.doi.org/10.1071/wf10079.

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Fire regimes in many north Australian savanna regions are today characterised by frequent wildfires occurring in the latter part of the 7-month dry season. A fire management program instigated from 2005 over 24 000 km2 of biodiversity-rich Western Arnhem Land aims to reduce the area and severity of late dry-season fires, and associated greenhouse gas emissions, through targeted early dry-season prescribed burning. This study used fire history mapping derived mostly from Landsat imagery over the period 1990–2009 and statistical modelling to quantify the mitigation of late dry-season wildfire through prescribed burning. From 2005, there has been a reduction in mean annual total proportion burnt (from 38 to 30%), and particularly of late dry-season fires (from 29 to 12.5%). The slope of the relationship between the proportion of early-season prescribed fire and subsequent late dry-season wildfire was ~–1. This means that imposing prescribed early dry-season burning can substantially reduce late dry-season fire area, by direct one-to-one replacement. There is some evidence that the spatially strategic program has achieved even better mitigation than this. The observed reduction in late dry-season fire without concomitant increase in overall area burnt has important ecological and greenhouse gas emissions implications. This efficient mitigation of wildfire contrasts markedly with observations reported from temperate fire-prone forested systems.

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Al-Gburi, Madyan Raad Ghazal, Saddam E. Al-Khatony, Rabeea Kh Znad, and Mahmood A. H. Al-Sumaidaie. "Mapping of Groundwater Potential Zone Using GIS and Remote Sensing of Shwan Sub-Basin, Kirkuk, NE Iraq." Iraqi Geological Journal 55, no. 2B (August 31, 2022): 62–72. http://dx.doi.org/10.46717/igj.55.2b.6ms-2022-08-22.

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The groundwater is an intrinsic and vital capital for providing water supplies in rural and urban areas. Climate change poses a strong threat to the world; especially in Iraq is considering one of the arid and semi-arid regions. The climatic changes lead to an increase in the demand for groundwater, especially with low rainfall and an increase in the population. It is very important to model groundwater potential for the sub-basin. This paper aims to produce a map defining the potential groundwater zones of the Shwan sub-basin. By Geographic Information System and remote sensing data, the required data or six factors (geology, elevations, slope, drainage density, soil, and land uses/land covers) are available to be collected through weighted overlay for creating groundwater potential map. The result was five zones for groundwater potential from very low towards the eastern parts and also end of the western boundary to very high towards the western parts of the sub-basin. The geological formations of the sub-basin such as conglomerate, low elevations, low slope and low drainage density consider as high groundwater potential zones.

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Driese, Kenneth L., William A. Reiners, and Robert C. Thurston. "Rule‐based Integration of Remotely‐sensed Data and GIS for Land Cover Mapping in NE Costa Rica." Geocarto International 16, no. 1 (March 2001): 37–46. http://dx.doi.org/10.1080/10106040108542181.

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Das, Pulakesh, Sujoy Mudi, Mukunda D. Behera, Saroj K. Barik, Deepak R. Mishra, and Parth S. Roy. "Automated Mapping for Long-Term Analysis of Shifting Cultivation in Northeast India." Remote Sensing 13, no. 6 (March 11, 2021): 1066. http://dx.doi.org/10.3390/rs13061066.

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Assessment of the spatio-temporal dynamics of shifting cultivation is important to understand the opportunities for land restoration. The past studies on shifting cultivation mapping of North-East (NE) India lack systematic assessment techniques. We have developed a decision tree-based multi-step threshold (DTMT) method for consistent and long-term mapping of shifting cultivation using Landsat data from 1975 to 2018. Widely used vegetation indices such as normalized difference vegetation index (NDVI), Normalized Burn Ratio (NBR) and its relative difference NBR (RdNBR) were integrated with the suitable thresholds in the classification, which yielded overall accuracy above 85%. A significant decrease in total shifting cultivation area was observed with an overall reduction of 75% from 1975–1976 to 2017–2018. The methodology presented in this study is reproducible with minimal inputs and can be useful to map similar changes by optimizing the index threshold values to accommodate relative differences for other landscapes. Furthermore, the crop-suitability maps generated by incorporating climate and soil factors prioritizes suitable land use of shifting cultivation plots. The Google Earth Engine (GEE) platform was employed for automatic mapping of the shifting cultivation areas at desired time intervals for facilitating seamless dissemination of the map products. Besides the novel DTMT method, the shifting cultivation and crop-suitability maps generated in this study, can aid in sustainable land management.

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Russell-Smith, Jeremy, Brett P. Murphy, C. P. (Mick) Meyer, Garry D. Cook, Stefan Maier, Andrew C. Edwards, Jon Schatz, and Peter Brocklehurst. "Improving estimates of savanna burning emissions for greenhouse accounting in northern Australia: limitations, challenges, applications." International Journal of Wildland Fire 18, no. 1 (2009): 1. http://dx.doi.org/10.1071/wf08009.

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Although biomass burning of savannas is recognised as a major global source of greenhouse gas emissions, quantification remains problematic with resulting regional emissions estimates often differing markedly. Here we undertake a critical assessment of Australia’s National Greenhouse Gas Inventory (NGGI) savanna burning emissions methodology. We describe the methodology developed for, and results and associated uncertainties derived from, a landscape-scale emissions abatement project in fire-prone western Arnhem Land, northern Australia. The methodology incorporates (i) detailed fire history and vegetation structure and fuels type mapping derived from satellite imagery; (ii) field-based assessments of fuel load accumulation, burning efficiencies (patchiness, combustion efficiency, ash retention) and N : C composition; and (iii) application of standard, regionally derived emission factors. Importantly, this refined methodology differs from the NGGI by incorporation of fire seasonality and severity components, and substantial improvements in baseline data. We consider how the application of a fire management program aimed at shifting the seasonality of burning (from one currently dominated by extensive late dry season wildfires to one where strategic fire management is undertaken earlier in the year) can provide significant project-based emissions abatement. The approach has wider application to fire-prone savanna systems dominated by anthropogenic sources of ignition.

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Lemenkova, Polina. "Data-driven insights into correlation among geophysical setting, topography and seafloor sediments in the Ross Sea, Antarctic." Caderno de Geografia 31, no. 64 (December 9, 2020): 1. http://dx.doi.org/10.5752/p.2318-2962.2021v31n64p1.

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Detailed mapping based on the high-resolution grids, such as GEBCO, ETOPO1, GlobSed, EGM-2008 is crucial for various domains of Earth sciences: geophysics, glaciology, Quaternary, sedimentology, geology, environmental science, geomorphology, etc. The study presented a GMT-based scripting techniques of the cartographic data processing aimed at the comparative analysis of the bathymetry, sediment thickness, geologic objects and geophysical settings in the study area based on various datasets. The study area is located in the Ross Sea, Antarctic. The highest values of the sediment thickness over 7,500 m are dominating in the southwest segment of the Ross Sea closer to the Victoria Land, followed by the region over the Ross Ice Shelf with values between 5,500 to 7,000 m (170°-175°W). The increased sediment thickness (2,500 to 3,000 m) was also mapped seen in the region NE off the Sulzberger Bay (70-75°S to 140-155°W), caused by the closeness of the Marie Bird Land ice coasts. A remarkable correlation between the gravity and the topography of the sea-land border in the Marie Bird Land area is well reflected in the coastal line and a set of the higher values in the free-air gravity. On the contrary, negative values (–60 to -80 mGal) are notable along the submarine toughs stretching parallel in the western part of the basin: e.g. the trough stretching in NW-SE direction in the 170°W-175°E, 65°S-68°S, between the 167°W-175°W, 70°S-72°S. Such correlations are clearly visible on the map, indicating geological lineaments and bathymetric depressions correlating with gravity grids. The paper contributes to the regional studies of the Ross Sea, the Antarctic and Polar region, and development of the cartographic technical methodologies by presenting an application of the GMT for thematic mapping.

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Oli, Biplov, Sushil Lamichhane, and Khem Oli. "Use of GIS in soil fertility mapping of Rapti Municipality, Chitwan, Nepal." Journal of Agriculture and Applied Biology 1, no. 2 (December 25, 2020): 64–73. http://dx.doi.org/10.11594/jaab.01.02.04.

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Mapping the spatial distribution of soil fertility in a particular area gives an idea about the nutrient content in the soil which plays an im-portant role in fertilizer recommendation, sustainable soil manage-ment, integrated plant nutrient management, landuse planning, and site-specific nutrient management (SSNM). A study was carried out to assess the soil fertility status of the Rapti Municipality, Chitwan, Ne-pal. A total of 120 soil samples was collected based on land use, slope, and aspects with the useof Google Earth Pro (GEP) and ArcGIS. Based on the soil test report spatial variation of soil texture, soil pH, total nitrogen, available phosphorous, and potassium of the study area was prepared. The majority of the study area (57.11%) has sandy clay soils. The soil pH was very strongly acidic to slightly alkaline with pH values ranging from 4.8 to 8.0. Soil organic matter (1.94-3.75%), total nitrogen (0.097-0.187%), available phosphorous(51.03-270.10 kgha-1), and available potassium (169.87-358.68 kgha-1) in the soil are within the range of medium to high in the study area. To maintain this nutrient status, the use of organic manure, reduced use of chemical fertilizers, and different soil management practices should be adopted in this area.

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Дисертації з теми "Mapping NE Arnhem Land"

Eggerking, Kitty. "Landmarks: reading the Gove Peninsula." Phd thesis, 2013. http://hdl.handle.net/1885/11613.

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This thesis investigates the events leading up to and including the first land rights case, Milirrpum v Nabalco, heard in the Northern Territory Supreme Court before Justice Blackburn in 1970. It examines how the Yolngu people of the Yirrkala mission responded to the federal government’s leasing of the Gove Peninsula for the mining of bauxite, initially by seeking a political solution and subsequently legal redress. Thus, it considers events such as the bark petitions the people of Yirrkala sent to the federal parliament in 1963 and the subsequent inquiry by a select committee of the House of Representatives into Yolngu grievances. While these events are reasonably well known, the thesis situates them in fresh and appropriate political contexts. For instance, it takes into account the instability of the Menzies government in 1963; and, further, it examines the relevant parliamentary standing orders to show that the bark petitions were in order but the then Minister for Territories was out of order in ‘rejecting’ the first petition. As well as these known events, the thesis also brings to light many other hitherto unreported events and matters. These events — and especially the actual Gove case — represent key moments for inspecting the contest of Indigenous and non-Indigenous systems of knowledge or world views, and this is the key reason for undertaking the study. To chart a course through the two disparate traditions, much of the focus is on the ways that land is conceptualised.

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Частини книг з теми "Mapping NE Arnhem Land"

Hill, Joachim, Marion Stellmes, and Changyao Wang. "Land Transformation Processes in NE China: Tracking Trade-Offs in Ecosystem Services Across Several Decades with Landsat-TM/ETM+ time Series." In Land Use and Land Cover Mapping in Europe, 383–409. Dordrecht: Springer Netherlands, 2014. http://dx.doi.org/10.1007/978-94-007-7969-3_23.

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