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首页> 外文期刊>Geomorphology >Morphology, spatial pattern and sediment of Nitraria tangutorum nebkhas in barchans interdune areas at the southeast margin of the Badain Jaran Desert, China
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Morphology, spatial pattern and sediment of Nitraria tangutorum nebkhas in barchans interdune areas at the southeast margin of the Badain Jaran Desert, China

机译：巴丹吉林沙漠东南缘Barchans interdune地区唐古特白刺（Nitraria tangutorum nebkhas）的形态，空间格局和沉积物

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摘要

To understand the characteristics of the nebkhas in barchan interdune areas, isolated barchan dunes at the southeast margin of the Badainjaran Desert in China and Nitraria tangutorum nebkhas in the interdune areas were selected, and the morphometric parameters, spatial patterns, and granulometric characteristics of the nebkhas in various interdune zones were compared. According to the locations relative to barchan dunes, the interdune areas were divided into three zones: the windward interdune zone (Zw), the leeward interdune zone (Zl), and the horn interdune zone (Zh). The zone that is proximal to barchan dunes and has never been disturbed by barchan dunes was also selected (Zi). The morphometric parameters were measured through a satellite image and field investigation. The population density and spatial patterns were analyzed using the satellite image, and surface sediment samples of the nebkhas and barchan dunes were collected for grain size analysis. The morphometric parameters of Nitraria tangutorun nebkhas in the interdune zones differ significantly. The nebkhas in Zh are larger than those observed in the other zones, and the nebkhas are the smallest in Zl. In all of the zones, the long-axis orientation of the nebkhas is perpendicular to the prevailing wind direction. The population density of the nebkhas in Zw is relatively higher, whereas the density in Zh and Zl becomes obviously lower. The spatial distribution of nebkhas in all of the zones can be categorized as a dispersed pattern. The sediments of the nebkhas are coarsest in Zh and finest in Zl. In addition, the sediments of the nebkhas in all of the zones are finer than those of barchan dunes. The amount of sand captured by the nebkhas in the interdune areas is approximately 20% of the volume of barchan dunes. The variations of the nebkhas' sizes, spatial pattern and sediment are subjected to migration, flow field and sand transport of barchan dunes and sand accumulation with plant growth in the interdune areas, which suggest complex mutual interactions between barchan dunes and the nebkhas in the interdune areas.
机译：为了了解巴肯河间地区的纳布沙人的特征，选择了中国Badainjaran沙漠东南边缘的孤立巴肯沙丘和沙丘之间的尼特拉里亚唐古特尼布哈斯，并对其形态学参数，空间模式和粒度特征进行了研究。比较了各个跨界带。根据相对于巴肯沙丘的位置，中间区域分为三个区域：迎风中间区域（Zw），背风中间区域（Zl）和喇叭中间区域（Zh）。还选择了靠近Barchan沙丘且从未被Barchan沙丘打扰的区域（Zi）。通过卫星图像和现场调查测量了形态计量学参数。利用卫星图像分析了人口密度和空间格局，并收集了内布哈斯和巴肯沙丘的表面沉积物样本进行粒度分析。中间区Nitraria tangutorun nebkhas的形态学参数差异很大。 Zh中的nebkhas大于其他区域中观察到的nebkhas，而Zl中的nebkhas最小。在所有区域中，nebkhas的长轴方向垂直于盛行的风向。 Zw中的nebkhas的人口密度相对较高，而Zh和Zl中的密度明显较低。 nebkhas在所有区域中的空间分布可以归类为分散的模式。 Nebkhas的沉积物在Zh最粗，在Zl最细。此外，所有地区内布哈斯人的沉积物都比巴肯沙丘的沉积物细。内布哈斯人在沙丘间地区捕获的沙量约占沙丘沙丘量的20％。 nebkhas的大小，空间格局和沉积物的变化会受到沙丘沙丘的迁移，流场和沙运输的影响，沙丘在沙丘间区域随植物的生长而积累，这表明沙丘沙丘和沙丘之间的沙丘之间复杂的相互作用地区。

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  • 来源
    《Geomorphology》 |2015年第1期|182-192|共11页
  • 作者

    YanYan Yang; LianYou Liu; PeiJun Shi; GuoMing Zhang; ZhiQiang Qu; Yan Tang; Jie Lei; HaiMing Wen; YiYing Xiong; JingPu Wang; LingLing Shen;

  • 作者单位

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China,State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China,State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China,State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;

    College of Ecology and Environmental Sciences, Inner Mongolia Agricultural University, Huhhot 010019, Inner Mongolia, China;

    College of Resources, Environment and Planning, Dezhou University, Dezhou 253023, Shandong, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;

    Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education, Beijing Normal University, Beijing 100875, China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Nitraria tangutorun nebkhas; Interdune zones; Barchan dunes; Morphology; Spatial pattern; Grain size;

    机译：Nitraria tangutorun nebkhas;跨区带;巴肯沙丘;形态学;空间格局;晶粒大小;

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