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Edyta Roszko 《Singapore journal of tropical geography》2023,44(1):75-94
During the 2010s, the South China Sea (SCS) became a geopolitical flashpoint over the sovereignty of the Paracels and Spratlys. China envisioned its transformation of coral reefs into military bases and island cities as an SCS ‘green construction’ project. This article analyses how the SCS is discursively construed and practically constructed as maritime national territory, by mobilizing fishing legacies and extending state limits through ‘state-led environmentalism’ rhetoric. Drawing on ethnographic fieldwork in China, I show that state-led environmentalism is a hierarchical process that intermittently co-opts and excludes local populations to advance the state's territorial ambitions, which are anchored in geographical, geopolitical and socio-technical imaginaries of ‘maritime civilization’. Yet, I also show that in this process, the SCS emerges as spaces of vernacularized political claims. Thus, I argue that territory is not only a political technology of control but also vernacular practice through which universalizing discourses— whether on the Exclusive Economic Zone regime, sovereignty or nature—are adapted and modified. 相似文献
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The aim of this study is to present an automatic approach for olive tree dendrometric parameter estimation from airborne laser scanning (ALS) data. The proposed method is based on a unique combination of the alpha-shape algorithm applied to normalized point cloud and principal component analysis. A key issue of the alpha-shape algorithm is to define the α parameter, as it directly affects the crown delineation results. We propose to adjust this parameter based on a group of representative trees in an orchard for which the classical field measurements were performed. The best value of the α parameter is one whose correlation coefficient of dendrometric parameters between field measurements and estimated values is the highest. We determined crown diameters as principal components of ALS points representing a delineated crown. The method was applied to a test area of an olive orchard in Spain. The tree dendrometric parameters estimated from ALS data were compared with field measurements to assess the quality of the developed approach. We found the method to be equally good or even superior to previously investigated semi-automatic methods. The average error is 19% for tree height, 53% for crown base height, and 13% and 9% for the length of the longer diameter and perpendicular diameter, respectively. 相似文献
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Jadwiga Wyszkowska Edyta Boros-Lajszner Waldemar Lajszner Jan Kucharski 《Environmental Earth Sciences》2017,76(11):403
Study was carried out to compare the effect of the degree of contamination of soil with copper on the soil enzyme activity, depending on the type of chemical compound with which a metal reaches the soil and on the method of soil use. An effect of increasing doses of copper on growth and the development of spring barley has been studied. The study was carried out as a pot experiment on two types of soil: loamy sand and light loam. Copper was introduced to soil as copper(II) sulphate(VI) and copper(II) chloride at four doses: 150, 300, 450 and 600 mg Cu2+ kg?1 d.m. of soil. Soil without copper was used as a control sample. The experiment showed that contamination of soil with copper applied as CuCl2 and CuSO4·5H2O upset the homeostasis of soil. Dehydrogenases and urease were the most sensitive to contamination of soil with Cu2+, both as copper(II) chloride and as copper(II) sulphate(VI), and acid phosphatase and alkaline phosphatase were the least sensitive. Greater changes in enzymatic activity were observed in loamy sand than in light loam. The differences in the impact of copper(II) sulphate(VI) and copper(II) chloride on the soil microbiome were relatively small, because mean ED50 for copper(II) chloride was 341 mg Cu2+ kg?1 d.m. of soil, and for copper(II) sulphate(VI) it was 364 mg Cu2+ kg?1 d.m. of soil. This inhibitory effect of copper persisted throughout the period of the experiment. The sensitivity of spring barley to copper compounds was lower than the enzymes under study. 相似文献
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Results of the nuclear magnetic resonance (NMR) investigations, mercury porosimetry measurements (MP) and computed microtomography (micro-CT), applied to the tight Palaeozoic rocks from the depths lower than 3000 m, were presented to estimate their reservoir potential. NMR signal analysis and interpretation were performed. Based on NMR driven models, permeability and Free Fluid Index were calculated for data sets divided into homogeneous clusters. Computerized mercury porosimetry results visualization and processing provided useful information, as the automatically determined Swanson parameter is correlated with petrophysical properties of rocks. Micro-CT enriched the image of porous space in qualitative and quantitative ways. Homogeneity of pore space structure was discussed using micro-CT approach. Integration of the results in the frame of reservoir parameters from standard laboratory methods and the modern ones resulted in the improvement of methodology for determining the old, deep-seated, hard sedimentary rocks reservoir potential. 相似文献
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Diele Fasma Luiso Ilenia Marangi Carmela Martiradonna Angela Woźniak Edyta 《Computational Geosciences》2022,26(5):1345-1366
Computational Geosciences - The SOC change index, defined as the normalized difference between the actual Soil Organic Carbon and the value assumed at an initial reference year, is here tailored to... 相似文献
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Edyta Jurewicz 《Swiss Journal of Geoscience》2018,111(1-2):245-267
The Pieniny Klippen Belt (PKB) is a narrow structure delineating the boundary between the Central and Outer Carpathians. It is built of nappes stacked during the Cretaceous and Paleocene and then re-folded in the Miocene during the formation of the Outer Carpathian overthrusts. The internal structure of the PKB at the Polish/Slovakian border first formed during northward nappe thrusting processes, which were most intense at the turn of the Cretaceous to the Paleocene. A secondary factor is the change in strike of the PKB turning from W–E to WNW–ESE, associated with dextral strike-slip faulting in the Carpathian basement (North-European Platform). These NNW-SSE oriented strike-slip fault zones, broadly parallel to the Teisseyre-Tornquist Zone, are responsible for the segmentation of the down-going plate, which influenced the subduction and collision between the North-European Platform and the Central Carpathian Block. Among them, the most important role was played by the Kraków—Myszków Fault Zone separating the Ma?opolska and Upper Silesian blocks in the Carpathian foreland. Shifts and interactions between the neighboring Pieniny and Outer Carpathian basins—during contemporaneous sedimentation and deformation—resulted in a difficult-to-define, transitional zone. Until now this zone had the rank of a tectonic unit, named “Grajcarek Unit” in Poland and “?ari? Unit” in the Slovak Republic. However, its northern boundary, often taken to represent the Central/Outer Carpathians boundary, is ambiguous. These problems are due to the spatial overlap of thrusting and gravitational flows resulting in chaotic breccias, olistoliths and olistostrome formation, which formed repeatedly and became deformed during the Maastrichtian to Early Miocene. Tectonic deformations in this area gradually vanished towards the north. This zone can therefore be defined as the Peri-Klippen part of the Magura Nappe that lacks a distinct northern tectonic limit. For this reason it is named ?ari? Transitional Zone (?TZ). 相似文献
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Edyta Puskarczyk Paulina Krakowska Mariusz Jędrychowski Magdalena Habrat Paweł Madejski 《Acta Geophysica》2018,66(6):1453-1461
The main goal was the analysis of parameters describing the structure of the pore space of carbonate rocks, based on tomographic images. The results of CT images interpretation, made for 17 samples of Paleozoic carbonate rocks were shown. The qualitative and quantitative analysis of a pore system was performed. Objects were clustered according to the pore size. Within the clusters, the geometry parameters were analysed. The following dependences were obtained for carbonate rocks, also for individual clusters (due to the volume): (1) a linear relationship (on a bilogarithmic scale) between the specific surface and the Feret diameter and (2) a strong linear relationship between specific surface area and Feret diameter and average diameter of the objects calculated for the sphere. The results were then combined with available results from standard laboratory tests, including NMR and MICP. 相似文献