Knowledge Resource Center for Ecological Environment in Arid Area
| 艾比湖流域博河灌区土壤可溶性盐离子分布特征及其影响因素 | |
| 其他题名 | The spatial distribution of soil salt ions and its influencing factors in Bortala River irrigatiion district, Ebinur Lake watershed of Xinjiang |
| 张登清 | |
| 出版年 | 2014 |
| 学位类型 | 硕士 |
| 导师 | 吉力力·阿不都外力 |
| 学位授予单位 | 中国科学院大学 |
| 中文摘要 | 艾比湖流域位于新疆维吾尔自治区的西北部，处于亚欧大陆腹地，是准噶尔盆地西南缘最低洼地和水盐汇集中心；艾比湖流域生态环境极其脆弱,对气候变化及人类活动的影响具有较强的敏感性。 博尔塔拉河（博河）是艾比湖的主要补给河流之一，同时博尔塔拉河流域也是天山北坡经济带和绿洲农业基地。博尔塔拉河的变化直接影响着艾比湖甚至整个北疆地区的人居环境。本文以博尔塔拉河流域的气温，降水量、地形和成图母质等数据和导致灌区土壤的可溶性盐分离子变化的施肥，灌溉用水等因素入手，阐述了博尔塔拉河流域的可溶性盐分离子的存在环境，在这背景下，以表土的可溶性盐分离子为研究对象，运用描述性统计分析，相关分析和地统计分析，对其空间变异性和空间格局进行研究，进而探讨和分析了可溶性盐离子分布特征的影响因素。通过研究得到了以下主要结论： （1） 统计分析和正态分布性检验表明：在研究区土壤各组分盐分离子中，阴离子以Cl-和SO42-为主，阳离子则以Na+为主，占绝对优势。各可溶性盐分离子中，除了HCO3-服从正太分布外，其它离子都不属于正态分布。从变异系数来看， HCO3-呈中等强度的变异性，其它离子呈现强烈的变异性，反映了流域盐分离子受影响因素的复杂性。 （2）空间结构性分析表明，Na+，K+，Mg2+，Cl-均较好的符合高斯模型分布，SO42-符合球状模型，具有强烈的空间相关性，结构性因素的影响程度大， HCO3-符合指数模型分布，Ca2+符合高斯模型，具有中等强度的空间相关性，其分布受结构性因素和随机性因素的共同作用。 （3）博尔塔拉河流域的土壤盐分空间变异性受地形地貌，土壤类型和质地，植物等自然因素和土地利用类型，作物种植结构，灌溉和施肥等人类活动过程共同影响着研究区土壤盐分各要素的空间分异。 |
| 英文摘要 | As a typical inland arid area closed salt lake, environmental degradation of Ebinur Lake in Xinjiang become this year's hot topics. Boertala River is one of the main feeder of the Ebinur Lake, which directly affect the living environment of aiby Lake and possibly the entire Xinjiang. This article to representatives of four weather stations in boertala River basin precipitation and other meteorological data and reflecting the population of basic characteristics of human activities, land, livestock numbers at the end, industry. As well as data such as industrial output, clarified that in Boertala River basin characteristics of climate changes and human activities, in this context, takes the Bortala River basin soil salinity as the object of study, utilizes the descriptive statistics analysis, the correlation analysis, the main part analysis and Geostatistical analysis, analyze its spatial variability, qualitative and quantitative analysis soil salinity spatial variability influencing factor. And following conclusions have been achieved in this dissertation: (1) Test of normal distribution and statistical analysis showed that: in researching various components in soil salinity ions, anions Cl-and SO42--oriented, in Na+ cation is mainly three types. Soil salinity elements, in addition to pH and HCO3- obedience is too distribution, the total salt, conductivity and other ions do not belong to a normal distribution. From the coefficient of variation of view, pH weakly variability, spatial variation is small, HCO3- showed moderate variability, soil total salt, conductivity and coefficient of variation of other ions are larger than 1, showing strong variability, reflecting the Basin salinity affected the complexity of factors. (2) The spatial structure analysis showed that total salts, conductivity, pH,Na+,K+,Mg2+,Cl- better comply with Gaussian distribution model, SO42-consistent with the spHerical model, they have a strong spatial correlation, HCO3-meet the exponential distribution model, Ca2+ line with Gaussian models, spatial correlation of these two ions with moderate intensity. (3) Boertala River basin of spatial variability of soil salinity affected by topograpHy, climatic conditions, soil type and texture, the natural factors and land use patterns of the plants, plant structure, human activities such as irrigation and fertilization processes affecting soil salinity in the study area spatial difference of the elements. |
| 中文关键词 | 博河流域 ; 农田表土 ; 可溶性盐分离子 ; 分布特征 ; 影响因素 |
| 英文关键词 | Boertala River Basin Topsoil The soluble salt ions Distribution characteristics Influence factors |
| 语种 | 中文 |
| 国家 | 中国 |
| 来源学科分类 | 自然地理学 |
| 来源机构 | 中国科学院新疆生态与地理研究所 |
| 资源类型 | 学位论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/287448 |
| 推荐引用方式 GB/T 7714 | 张登清. 艾比湖流域博河灌区土壤可溶性盐离子分布特征及其影响因素[D]. 中国科学院大学,2014. |
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