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首页> 外文期刊>Water Resources Management >Effects of Watershed Vegetation on Tributary Water Yields During the Wet Season in the Heishui Valley, China
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Effects of Watershed Vegetation on Tributary Water Yields During the Wet Season in the Heishui Valley, China

机译：黑水河谷湿季流域植被对支流产水量的影响

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摘要

The relationships between water yields of tributaries and coverage of different vegetation types in the corresponding sub-watersheds were investigated during the wet season in the Heishui River Valley, located in the upper portion of the Yangtze River in western China. Stable isotope analysis was used to calculate the relative contributions of the tributaries to water yield in the main stem of the Heishui River, while relative coverages of the different vegetation types were calculated from classified Landsat 7 TM satellite images of the study area. We found that all the sub-watersheds were dominated by two vegetation types (subalpine forest and alpine shrub-meadow) which influenced water yields in opposite ways. Lower subalpine forest coverage was significantly associated with higher tributary water yield, whereas lower alpine shrub-meadow coverage was associated with lower tributary water yield. Comparing our results to similar studies at different spatial scales, we found increasing uncertainty in the relationship between vegetation coverage (total and individual community types) and water yields as scale increased. Nevertheless, the quantitative relationships found in our study may prove useful at the appropriate scales by allowing policy makers and managers to use vegetation coverage as an indicator or index of water yield when attempting to manipulate the vegetation of watersheds to reduce the risk of flooding in this region.
机译：在中国西部长江上游的黑水河流域，在雨季期间研究了支流水产量与相应子流域不同植被类型的覆盖率之间的关系。用稳定同位素分析法计算了黑水河干流支流对水产量的相对贡献，而不同植被类型的相对覆盖度则是通过对研究区分类的Landsat 7 TM卫星图像计算得出的。我们发现，所有子流域都以两种植被类型（亚高山森林和高山灌木草甸）为主导，这两种植被以相反的方式影响水的产量。较低的高山森林覆盖率与较高的支流水产量显着相关，而较低的灌木丛草甸覆盖率与较低的支流水产量相关。将我们的结果与不同空间尺度上的类似研究进行比较，我们发现随着尺度的增加，植被覆盖率（总和个体群落类型）与水产量之间的关系的不确定性增加。尽管如此，我们的研究中发现的定量关系在适当的规模上可能会证明是有用的，因为它允许政策制定者和管理者在尝试操纵流域植被以减少水灾风险时使用植被覆盖率作为水产量的指标或指标。区域。

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  • 来源
    《Water Resources Management》 |2011年第5期|p.1449-1464|共16页
  • 作者

    Yuhong Liu; Xin Leng; Zifa Deng; Lixin Wang; Li Zhang; Shirong Liu; Shuqing An;

  • 作者单位

    Yantai Institute of Coastal Zone Research,CAS, Yantai 264003, China,Laboratory of Forest Ecology and Global Change,School of Life Sciences, Nanjing University, Nanjing 210093, China;

    Laboratory of Forest Ecology and Global Change,School of Life Sciences, Nanjing University, Nanjing 210093, China;

    Laboratory of Forest Ecology and Global Change,School of Life Sciences, Nanjing University, Nanjing 210093, China;

    College of Environment and Resources, Inner Mongolia University,Hohhot, 010021, China;

    School of Environment and Natural Resources,Ohio State University, Columbus, OH 43202, USA;

    Institute of Forest Ecology, Environment and Protection,The Chinese Academy of Forestry, Beijing 100091, China;

    Laboratory of Forest Ecology and Global Change,School of Life Sciences, Nanjing University, Nanjing 210093, China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    water yield; land cover type; scale; stable isotope; remote sensing; watershed;

    机译：产水量;土地覆被类型;规模;稳定同位素;遥感;分水岭;

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