| 贵州成土母岩类型及其与耕地土壤关系探讨 |
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| 引用本文： | 马义波,李龙波,张美雪,莫春虎,孟伟.贵州成土母岩类型及其与耕地土壤关系探讨[J].贵州地质,2020,37(4):425-429. |
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| 作者姓名： | 马义波 李龙波 张美雪 莫春虎 孟伟 |
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| 作者单位： | 贵州省耕地质量地球化学调查评价领导小组办公室，贵州贵阳550004;贵州省地质调查院，贵州贵阳550081;贵州省耕地质量地球化学调查评价领导小组办公室，贵州贵阳550004;贵州省地质环境监测院，贵州贵阳550081 |
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| 基金项目： | 国家自然科学基金资助项目(11861020) |
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| 摘 要： | 本文考虑无约束组稀疏回归问题，其损失函数为凸函数,正则项为MCP(minimax concave penalty)，主要刻画该问题的两类稳定点。首先，给出d-稳定点以及critical点的具体刻画，并且证明了这两类稳定点的关系；其次，分析d-稳定点与问题局部解的关系；最后，证明了该模型的下界性质。
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| 关 键 词： | 组稀疏问题 MCP正则 d-稳定点 critical点 下界性质 |
| 收稿时间： | 2020/8/17 0:00:00 |
Disscussion on Soil Forming Rock Type and Its Relation with Cultivated Land Soil in Guizhou |
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| MA Yi-bo,LI Long-bo,ZHANG Mei-xue,MO Chun-hu,MENG Wei.Disscussion on Soil Forming Rock Type and Its Relation with Cultivated Land Soil in Guizhou[J].Guizhou Geology,2020,37(4):425-429. |
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| Authors: | MA Yi-bo LI Long-bo ZHANG Mei-xue MO Chun-hu MENG Wei |
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| Institution: | Guizhou Leading Group Office of Cultivated Land Quality Geochemical Survey, Guiyang 550004, Guizhou, China ;Guizhou Geological Survey,Guiyang 550018, Guizhou, China;Guizhou Leading Group Office of Cultivated Land Quality Geochemical Survey, Guiyang 550004, Guizhou, China ;Guizhou Geological Environment Monitoring Institute, Guiyang 550081, Guizhou, China |
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| Abstract: | In this paper, as the geological background of Guizhou, for the soil forming rock and surface soil sample in Guihzou cultivated land quality geochemical survey were collected, the soil forming rock of Guizhou are divided into 5 categories and 14 types, are primarily limestone and dolomite. The geological distribution of each soil forming rock, the basic features and the influence of soil forming rock to cultivated land property are analyzed and summarized, the spatial distribution controlling factors ars also discussed. |
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| Keywords: | Soil forming rock Type Cultivated land Relation Guizhou |
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