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Drought hazard assessment and possible adaptation options for typical steppe grassland in Xilingol League, Inner Mongolia, China

机译:内蒙古锡林郭勒盟典型草原草原的干旱危害评估及可能的适应方案

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摘要

Droughts cause both major financial losses to society as well as environmental damage, especially in arid and semi-arid regions, where the economy relies upon rainfed pastoralism and cultivation. Droughts are becoming increasingly frequent and intense with ongoing global climate change. Moving from a reactive to a preventative mode of drought response is the key to minimizing drought-related economic and environmental costs, and drought hazard analysis is becoming increasingly important. Xilingol League, in Inner Mongolia, consists of typical steppe and is seriously affected by drought. In this study, we conducted a drought hazard analysis based on two drought indices, the precipitation anomaly percentage (Pa) and the standardized precipitation evapotranspiration index (SPEI), using data from a series of meteorological monitoring stations from across the region. The drought hazard values were used to define zones which were divided into five levels using a natural break-point. Of the two indexes, Pa was found to be the more effective and the corresponding drought hazard map resembles the spatial distribution of precipitation, decreasing from northwest to southeast. Improving awareness of livestock farmers to drought risk is important for disaster mitigation and we propose that drought hazard-based insurance can play an important role. Finally, we propose a series of drought adaptation measures to reduce the possibility and intensity of drought, both in theory and in practice. Our results potentially provide improved insights into the drought hazard and may be helpful in developing appropriate adaptation and mitigation strategies to cope with the adverse effects of drought.
机译:干旱不仅给社会造成重大的财务损失,也给环境造成破坏,特别是在干旱和半干旱地区,那里的经济依赖于雨养的牧民和耕种。随着全球气候变化的不断发生,干旱变得越来越频繁和激烈。从被动应对方式转变为预防方式是减少干旱相关经济和环境成本的关键,而干旱危害分析变得越来越重要。内蒙古的锡林郭勒盟由典型的草原组成,受到干旱的严重影响。在这项研究中,我们使用来自该地区一系列气象监测站的数据,基于两个干旱指数,降水异常百分比(Pa)和标准化降水蒸散指数(SPEI),进行了干旱危害分析。干旱危害值用于定义使用自然断点分为五个级别的区域。在这两个指标中,发现Pa更为有效,相应的干旱灾害图类似于降水的空间分布,从西北到东南递减。提高牲畜养殖者对干旱风险的认识对于减轻灾害很重要,我们建议基于干旱危害的保险可以发挥重要作用。最后,我们在理论上和实践上提出了一系列干旱适应措施,以减少干旱的可能性和强度。我们的结果可能会更好地了解干旱的危害,并可能有助于制定适当的适应和减缓战略来应对干旱的不利影响。

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  • 来源
    《Theoretical and applied climatology》 |2019年第4期|1339-1346|共8页
  • 作者单位

    East China Normal Univ, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200241, Peoples R China|East China Normal Univ, Sch Geog Sci, Shanghai 200241, Peoples R China|Hamburg Univ Appl Sci, Res & Transfer Ctr Sustainable Dev & Climate Chan, D-21033 Hamburg, Germany;

    East China Normal Univ, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200241, Peoples R China|East China Normal Univ, Sch Geog Sci, Shanghai 200241, Peoples R China;

    Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China;

    Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China|Inner Mongolia Normal Univ, Key Lab Remote Sensing & Geog Informat Syst Inner, Hohhot 010022, Peoples R China;

    Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China;

    Inner Mongolia Normal Univ, Coll Geog Sci, Hohhot 010022, Peoples R China|Inner Mongolia Normal Univ, Key Lab Remote Sensing & Geog Informat Syst Inner, Hohhot 010022, Peoples R China;

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