Results 1 to 10 of about 10,689 (142)
Application of digital terrain analysis to the study of cerebral cortex morphology [PDF]
, 2023 Objective·To propose a theoretical method based on geosciences for the expression and quantitative description of the surface morphology of the cerebral cortex.Methods·Eighty-five samples of normal cognition (NC) and 84 samples of Alzheimer′s disease (AD)
CHEN Nan, LIN Siwei, YANG Zihao
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Temporal and Spatial Characteristics of Soil Erosion in Typical Counties of Black Soil Region Based on RUSLE [PDF]
, 2023 [Objective] The spatiotemporal characteristics of soil erosion were analyzed in order to provide a reference for soil erosion control and evaluation of soil and water conservation benefits.
Fu Bin +6 more
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Spatiotemporal Variations and Topographic Differentiation of Fractional Vegetation Cover in Changbai Mountain [PDF]
, 2023 [Objective] The dynamic changes of vegetation and its response relationship with topography in Changbai Mountain were explored in order to provide scientific support for ecological environmental protection and management in this mountainous area ...
Li Wen, Shi Song, Yang Ziyi, Yu Ran
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Shuitu Baochi Xuebao, 2022 选取黄土丘陵沟壑区纸坊沟小流域为研究区,利用高精度遥感影像(分辨率0.068 m)和DEM (分辨率0.34 m)数据,结合野外调查,对崩塌、滑塌、滑坡、脱落和陷穴等失稳体进行识别,通过统计学、敏感系数方法,利用识别失稳体数据,分析不同类型失稳体空间分布状况,定量研究不同类型失稳体的影响因子敏感程度,揭示不同类型失稳体的主控因子,进一步阐明流域坡体失稳体的空间分布规律和影响坡体稳定性的主控因子。结果表明:(1)利用高精度遥感影像,获取流域失稳体,主要是以小规模和浅层的脱落、崩塌和滑塌为主 ...
张庚, 王志强, 朱喆
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気温・日射量・相対湿度・基準蒸発散量の50m メッシュデータ作成アプリケーション群の開発 [PDF]
, 2019 主に農業分野で利用されるメッシュ気象データの解像度は1km であることから，日本の農地の約4 割が存在する中山間地域や，果樹や茶などが栽培される傾斜園地のある府県では，より解像度の高い50m メッシュ気象データの需要は高い．しかし，その作成には専門的な知識と技術が必要である．また，実際の農業現場では，気温や日射のほか，病害の発生と関連のある湿度や，かん水のタイミングや乾燥程度の指標となる基準蒸発散量といったデータも有用である．このようなことから，専門知識を持たない公設試の研究員や普及員などが，50m ...
植山 秀紀
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Shuitu Baochi Xuebao, 2021 坡面地形变化是影响侵蚀泥沙颗粒特征的重要因素，深入理解地形因子与侵蚀泥沙颗粒粒径组成及分选特征的关系是研究坡面土壤侵蚀动力学的基础。采用野外降雨试验和粒径分析试验，结合ArcGIS系统识别和提取得到地形因子数据，研究低山丘陵地区侵蚀泥沙颗粒特征及其与地形因子的关系。结果表明：（1）在试验条件下，侵蚀泥沙中黏粒和粉粒总含量远高于砂粒，粗颗粒含量与坡度因子呈显著正相关关系 ...
朱方方 +3 more
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Zhejiang Daxue xuebao. Lixue ban, 2019 不同空间分辨率的DEM 会对地理可照时数模拟结果产生显著影响。为了分析DEM 尺度效应对我国不同区域地理可照时数的影响，选取小兴安岭、太行山区、秦岭、青藏高原弧形山区、横断山区和东南丘陵6 个实验区，基于3 种空间分辨率的DEM 和地理可照时数分布式模型，利用GIS 的多层面复合分析功能，模拟了典型月份不同空间尺度的地理可照时数，定量分析了典型地形因子与模拟结果的关系，并探讨了DEM 尺度效应的影响。研究结果表明：（1） 我国地理可照时数差异明显，1 月、7 月及其差异主要受剖面曲率、海拔、纬度 ...
LIJun(李军) +4 more
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Research of rainstorm event disaster hazard assessment method-A case study of "8·12" rainstorm event in Xiaogan City [PDF]
, 2023 The assessment of disaster-causing hazards for the rainstorm event is a fundamental and key aspect of assessing the risk of rainstorm disasters, which can provide essential technical support for meteorological disaster prevention and mitigation.
Fen WANG +6 more
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Shuitu Baochi Xuebao, 2023 地形是影响土壤侵蚀的主要因素,但目前关于青藏高原地形因子的分布格局和影响因素有待研究。基于1弧秒分辨率的SRTM(shuttle radar topography mission)高程数据,计算坡度、坡长、LS因子(slope length and steepness factors, LS),结合高程积分和Hack剖面等,对青藏高原LS因子的分布格局、统计分布特征和影响因素进行研究,结果表明:(1)坡度、坡长和LS因子这3个地形指标,均表现出高原内部小、四周高山大的格局 ...
黎恩丹 +5 more
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Research and development of integrated life cycle risk management and control platform for large petroleum storage depot [PDF]
, 2023 In order to ensure energy security and realize the "dual carbon" strategy, it is urgent to strengthen the risk management and control of large oil and gas storage facilities while vigorously improving the storage capacity of oil and gas.
Xiping ZHU
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