| 典型喀斯特岩性组合结构的流域水文干旱机制研究——以贵州省为例 |
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| 引用本文： | 贺中华,陈晓翔,梁虹,杨朝晖,黄法苏,曾信波.典型喀斯特岩性组合结构的流域水文干旱机制研究——以贵州省为例[J].地质科学,2015,50(1):340-353. |
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| 作者姓名： | 贺中华 陈晓翔 梁虹 杨朝晖 黄法苏 曾信波 |
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| 作者单位： | 1. 贵州师范大学地理与环境科学学院 贵阳 550001;
2. 中山大学地理科学与规划学院 广州 510275;
3. 贵州省水利厅 贵阳 550002;
4. 贵州省水文水资源局 贵阳 550002 |
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| 基金项目： | 国家自然科学基金项目，贵州省水利厅自然科研基金项目，贵州省科技厅自然科研基金项目，贵州省教育厅自然科研基金项目(编号:黔教科2009，黔教科2006307) |
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| 摘 要： | 水文干旱已成为全球气候变化背景下典型的自然现象,是气象干旱和农业干旱的延续和发展,是最终、最彻底的干旱。岩性是流域下垫面的重要组成物质,其岩性类型及结构控制着地貌及水系的发育、促进流域储水空间的形成,影响流域的储水能力,关系到流域水文干旱的发生。本文在贵州省选择40个典型流域为研究样区,利用面向对象分类技术,提取流域岩性类型的遥感信息;利用主成分分析及灰色理论,研究岩性类型及其结构对流域水文干旱的影响机制。研究表明:1)从岩性类型因素上看,流域岩性类型对水文干旱影响总体较大,影响从大到小排序(关联度)为:K(0.985)Z(0.96)0(0.924)J(0.922)S(0.806)D(0.788)ε(0.75)C(0.69)Pt(0.684)P(0.568)T(0.542);2)岩性类型的主成分因素对流域水文干旱影响从大到小排序(关联度)为:Z_3(0.48)Z_4(0.47)Z_1(0.44)Z_5(0.42)Z_2(0.39);3)岩性类型组合方式对流域水文干旱影响从大到小排序为:Ⅰ、ⅡⅤ、ⅣⅢ。
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| 关 键 词： | 典型喀斯特流域 岩性类型 流域储水空间 流域水文干旱 |
| 收稿时间： | 2014-05-10 |
| 修稿时间： | 2014-05-10; |
Studies on the mechanism of watershed hydrologic droughts based on the combined structure of typical karst lithologys: Taking Guizhou Province as a case |
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| He Zhonghua,Chen Xiaoxiang,Liang Hong,Yang Zhaohui,Huang Fasu,Zeng Xinbo.Studies on the mechanism of watershed hydrologic droughts based on the combined structure of typical karst lithologys: Taking Guizhou Province as a case[J].Chinese Journal of Geology,2015,50(1):340-353. |
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| Authors: | He Zhonghua Chen Xiaoxiang Liang Hong Yang Zhaohui Huang Fasu Zeng Xinbo |
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| Institution: | 1. School of Geographic and Environmental Science, Guizhou Normal University, Guiyang 550001;
2. School of Geography and Planning, Sun Yat-sen University, Guangzhou 510275;
3. Department of Water Resources of Guizhou Province, Guiyang 550002;
4. Guizhou of Hydrology and Water Resource Bureau, Guiyang 550002 |
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| Abstract: | Hydrologic drought, which has become a typical natural phenomenon under the background of global climate change, is the continuation and development of the meteorologic and agricultural drought and is the ultimate and the most thorough drought. The lithology is an important substance of watershed underlying surfaces. The development of the landform and river system, and promote the formation of watershed water-storing space, which affects on the watershed water-storing ability and relates to the occurrence of hydrologic drought are controlled by the lithologic types and structures. We choose 40 typical sample areas in Guizhou Province, use the object-oriented classification technology to extract the remote sensing information of watershed lithologic types and use principal component analysis and grey theory to study the influence mechanism of the lithologic types and structures on hydrologic drought. This study shows that: 1)It has generally greater influence from the views of the lithologic types of factors on the hydrological drought, and the descending order of its influence degrees(associated degree)is K(0.985) > Z(0.96) > O(0.924) > J(0.922) > S(0.806) > D(0.788) > ε(0.75) > C(0.69) > Pt(0.684) > P(0.568) > T(0.542); 2)The descending order(associated degree)of impacts of the principal component factors of lithologic types on hydrologic drought is Z3(0.48) > Z4(0.47) > Z1(0.44) > Z5(0.42) > Z2(0.39); 3)The descending order of impacts of the lithologic types of combinations on hydrologic drought is Ⅰ、Ⅱ > Ⅴ、Ⅳ > Ⅲ. |
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| Keywords: | Typical karst drainage basin Lithologic types Watershed water-storing space Hydrologic drought |
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