| 泰和县耕地土壤养分空间分布及影响因素 |
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| 引用本文： | 赵越,罗志军,廖牧鑫,曹丽萍,赵杰,冉凤维.泰和县耕地土壤养分空间分布及影响因素[J].水土保持学报,2018,32(5):296-303. |
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| 作者姓名： | 赵越 罗志军 廖牧鑫 曹丽萍 赵杰 冉凤维 |
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| 作者单位： | 江西农业大学国土资源与环境学院;江西省鄱阳湖流域农业资源与生态重点实验室;江西农业大学计算机与信息工程学院 |
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| 基金项目： | 国家自然科学基金项目（31660140） |
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| 摘 要： | 基于泰和县耕地中获取的4 029个土壤采样数据,运用半变异分析、自相关分析、回归分析等分析方法,对泰和县土壤各养分(有机质(OM)、碱解氮(AN)、速效钾(AK)、有效磷(AP))含量因子的空间分布规律及其影响因素进行分析。结果表明:泰和县耕地土壤中OM、AP、AK、AN含量分别为4.40~58.50g/kg和1.50~62.80,12.00~352.00,29.00~341.00mg/kg,均属中等变异。4类土壤养分因子最适宜模型均为指数模型,块金效应均小于25%,表明各养分因子主要受结构性因素影响。各养分因子均显现出显著的聚集特征,其中HH聚集类型多于桥头、灌溪、冠朝等乡镇分布;LL聚集类型多于马市、万合等乡镇分布。根据相关分析与回归分析结果可知,对土壤养分含量产生影响较大的因子主要为地形、成土母质等结构性因素;交通、水利等随机性影响因素对其影响较弱。
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| 关 键 词： | 土壤养分 空间变异 聚类关系 影响因素 泰和县 |
| 收稿时间： | 2018/3/30 0:00:00 |
Study on the Spatial Distribution of Soil Nutrients and Its Influencing Factors in the Cultivated Land of Taihe County |
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| ZHAO Yue,LUO Zhijun,LIAO Muxin,CAO Liping,ZHAO Jie,RAN Fengwei.Study on the Spatial Distribution of Soil Nutrients and Its Influencing Factors in the Cultivated Land of Taihe County[J].Journal of Soil and Water Conservation,2018,32(5):296-303. |
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| Authors: | ZHAO Yue LUO Zhijun LIAO Muxin CAO Liping ZHAO Jie RAN Fengwei |
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| Institution: | 1. Academy of Land Resources and Environment, Jiangxi Agricultural University, Nanchang 330045;2. Key Laboratory of Poyang Lake Watershed Agricultural Resources and Ecology of Jiangxi Province, Nanchang 330045;3. Academy of Computer and Information Engineering, Jiangxi Agricultural University, Nanchang 330045 |
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| Abstract: | Based on the 4 029 soil samples data obtained from the cultivated land, the spatial distribution of soil nutrients (organic matter (OM), available nitrogen (AN), available potassium (AK) and available phosphorus (AP)) in Taihe county and its influencing factors were analyzed by means of semi variation analysis, autocorrelation analysis and regression analysis. The results showed that the contents of OM, AP, AK and AN were 4.40~58.50 g/kg and 1.50~62.80, 12.00~352.00, 29.00~341.00 mg/kg, respectively, and all belonged to the medium variation. The exponential model was the most suitable model for all the studied four soil nutrients. The nugget effect was less than 25%, indicating that the nutrients were mainly affected by structural factors. All nutrient factors showed significant aggregation characteristics. More HH accumulation types were observed than those of Qiaotou, guanxi, guachao and other townships, more LL accumulation types than those of Mashi and Wanhe township. According to correlation analysis and regression analysis, it was known that the factors that had great influence on soil nutrients contents were mainly structural factors such as landform and parent material, and random factors, such as traffic and water conservancy, had a weak influence. |
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| Keywords: | soil nutrients spatial variability clustering relationship influencing factors Taihe County |
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