洱海近岸菜地浅层地下水动态变化特征及影响因素
研究洱海近岸菜地浅层地下水埋深是合理调控浅层地下水位和防止土壤氮磷随浅层地下水流失的基础。通过对洱海近岸菜地2 a(2014年6月—2016年5月)浅层地下水埋深进行监测,分析了浅层地下水埋深的时空变化特征和影响因素。结果表明,洱海近岸菜地5个高程浅层地下水埋深均服从正态分布,其平均值为25.21~45.07cm,变异系数在0.26~0.43之间。浅层地下水埋深旱季深、雨季浅,其月变化和雨、旱季不同期,存在滞后现象,雨季浅层地下水埋深变异系数大于旱季。旱季和雨季浅层地下水埋深空间变化随等高线均呈不规则带状分布。洱海水位、降雨、灌溉、潜水蒸发和土壤物理特性的空间变异均是影响洱海近岸菜地浅层地下水...
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Published in | Guanʻgai paishui xuebao Vol. 36; no. 12; pp. 101 - 109 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
Xinxiang City
Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage
2017
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Subjects | |
Online Access | Get full text |
ISSN | 1672-3317 |
DOI | 10.13522/j.cnki.ggps.2017.12.017 |
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Abstract | 研究洱海近岸菜地浅层地下水埋深是合理调控浅层地下水位和防止土壤氮磷随浅层地下水流失的基础。通过对洱海近岸菜地2 a(2014年6月—2016年5月)浅层地下水埋深进行监测,分析了浅层地下水埋深的时空变化特征和影响因素。结果表明,洱海近岸菜地5个高程浅层地下水埋深均服从正态分布,其平均值为25.21~45.07cm,变异系数在0.26~0.43之间。浅层地下水埋深旱季深、雨季浅,其月变化和雨、旱季不同期,存在滞后现象,雨季浅层地下水埋深变异系数大于旱季。旱季和雨季浅层地下水埋深空间变化随等高线均呈不规则带状分布。洱海水位、降雨、灌溉、潜水蒸发和土壤物理特性的空间变异均是影响洱海近岸菜地浅层地下水埋深变化的主要因素。其中,1 966 m高程浅层地下水埋深与洱海水位极显著线性相关(p〈0.01),二者互为连通,相互补给;其他高程浅层地下水埋深与降雨量和灌溉量显著线性相关(p〈0.05),随降雨量增加,浅层地下水埋深逐渐变浅,随潜水蒸发量和灌溉量增加,浅层地下水埋深逐渐变深。距洱海由近及远土壤母质为河湖相沉积物到第四纪红黏土,使得不同发生层土壤渗水性由强变弱,造成离洱海越远,海拔越高,浅层地下水埋深越浅,变幅越小。 |
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AbstractList | 研究洱海近岸菜地浅层地下水埋深是合理调控浅层地下水位和防止土壤氮磷随浅层地下水流失的基础。通过对洱海近岸菜地2 a(2014年6月—2016年5月)浅层地下水埋深进行监测,分析了浅层地下水埋深的时空变化特征和影响因素。结果表明,洱海近岸菜地5个高程浅层地下水埋深均服从正态分布,其平均值为25.21~45.07 cm,变异系数在0.26~0.43之间。浅层地下水埋深旱季深、雨季浅,其月变化和雨、旱季不同期,存在滞后现象,雨季浅层地下水埋深变异系数大于旱季。旱季和雨季浅层地下水埋深空间变化随等高线均呈不规则带状分布。洱海水位、降雨、灌溉、潜水蒸发和土壤物理特性的空间变异均是影响洱海近岸菜地浅层地下水埋深变化的主要因素。其中,1 966 m高程浅层地下水埋深与洱海水位极显著线性相关(p<0.01),二者互为连通,相互补给;其他高程浅层地下水埋深与降雨量和灌溉量显著线性相关(p<0.05),随降雨量增加,浅层地下水埋深逐渐变浅,随潜水蒸发量和灌溉量增加,浅层地下水埋深逐渐变深。距洱海由近及远土壤母质为河湖相沉积物到第四纪红黏土,使得不同发生层土壤渗水性由强变弱,造成离洱海越远,海拔越高,浅层地下水埋深越浅,变幅越小。 研究洱海近岸菜地浅层地下水埋深是合理调控浅层地下水位和防止土壤氮磷随浅层地下水流失的基础。通过对洱海近岸菜地2 a(2014年6月—2016年5月)浅层地下水埋深进行监测,分析了浅层地下水埋深的时空变化特征和影响因素。结果表明,洱海近岸菜地5个高程浅层地下水埋深均服从正态分布,其平均值为25.21~45.07cm,变异系数在0.26~0.43之间。浅层地下水埋深旱季深、雨季浅,其月变化和雨、旱季不同期,存在滞后现象,雨季浅层地下水埋深变异系数大于旱季。旱季和雨季浅层地下水埋深空间变化随等高线均呈不规则带状分布。洱海水位、降雨、灌溉、潜水蒸发和土壤物理特性的空间变异均是影响洱海近岸菜地浅层地下水埋深变化的主要因素。其中,1 966 m高程浅层地下水埋深与洱海水位极显著线性相关(p〈0.01),二者互为连通,相互补给;其他高程浅层地下水埋深与降雨量和灌溉量显著线性相关(p〈0.05),随降雨量增加,浅层地下水埋深逐渐变浅,随潜水蒸发量和灌溉量增加,浅层地下水埋深逐渐变深。距洱海由近及远土壤母质为河湖相沉积物到第四纪红黏土,使得不同发生层土壤渗水性由强变弱,造成离洱海越远,海拔越高,浅层地下水埋深越浅,变幅越小。 |
Author | 杨艳鲜;张丹;雷宝坤;刘宏斌;翟丽梅;毛妍婷;冯光恒;陈安强 |
AuthorAffiliation | 云南省农业科学院农业环境资源研究所,昆明650205;云南农业大学资源与环境学院,昆明650201;中国农业科学院农业资源与农业区划研究所农业部面源污染控制重点实验室,北京100081;云南省农业科学院,昆明650205 |
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Copyright | Copyright Chinese Academy of Agricultural Sciences (CAAS) Farmland Irrigation Research Institute Editorial Office of Journal of Irrigation and Drainage 2017 |
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DocumentTitleAlternate | Dynamics of Shallow Groundwater table and the Factors Impacting It in the Nearshore Vegetable Field of the Erhai Lake |
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Notes | Understanding the dynamics of shallow groundwater table in the nearshore vegetable field of the Erhai Lake was essential for regulating groundwater resources and preventing nitrogen and phosphorus leaching. Based on groundwater data measured from June 2014 to May 2016 in the nearshore vegetable field, we analyzed the dynamics of the groundwater depth and the factors affecting it. The results showed that the shallow groundwater depth at different elevations showed a normal distribution and the average depth of shallow groundwater table was from 25.21 cm to 45.07 cm with variation coefficient of 0.26 to 0.43. The shallow groundwater depth was deeper in the dry season than in the rainy season, and its monthly variation in the rainy reasons differs from that in dry reasons, characterized by a hysteresis. The variation coefficient of the shallow groundwater depth in the rainy season was greater than that in the dry season. The spatial variation of the shallow groundwater depth showed irregular distribution. The wa ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 14 |
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Snippet | 研究洱海近岸菜地浅层地下水埋深是合理调控浅层地下水位和防止土壤氮磷随浅层地下水流失的基础。通过对洱海近岸菜地2 a(2014年6月—2016年5月)浅层地下水埋深进行监测,分... 研究洱海近岸菜地浅层地下水埋深是合理调控浅层地下水位和防止土壤氮磷随浅层地下水流失的基础。通过对洱海近岸菜地2 a(2014年6月—2016年5月)浅层地下水埋深进行监测,分... |
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SubjectTerms | Coefficient of variation Dry season Evaporation Groundwater Groundwater data Groundwater levels Hydrologic data Irrigation Lakes Leaching Normal distribution Physical properties Rainfall Rainy season Seasons Soil formation Soil permeability Soil physical properties Soil properties Spatial variations Vegetables Water depth Water level fluctuations Water levels Water resources Water table 影响因素 时空变化 洱海 浅层地下水埋深 菜地 |
Title | 洱海近岸菜地浅层地下水动态变化特征及影响因素 |
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