| 塔里木河中游胡杨(Populus euphraticu)“肥岛”的养分特征研究 |
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| 引用本文： | 高军,武红旗,朱建雯,盛建东,张莉燕.塔里木河中游胡杨(Populus euphraticu)“肥岛”的养分特征研究[J].新疆农业大学学报,2008,31(5). |
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| 作者姓名： | 高军 武红旗 朱建雯 盛建东 张莉燕 |
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| 作者单位： | 新疆农业大学,草业与环境科学学院,乌鲁木齐,830052 |
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| 基金项目： | 国家自然科学基金，自治区土壤学重点学科基金 |
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| 摘 要： | 利用传统统计学和地统计学方法,对塔里木河中游胡杨"肥岛"的养分特征进行了研究.结果表明:胡杨周围的土壤养分向冠幅内聚集,具有较强的富积强度,形成了明显的"肥岛"特征.大胡杨冠幅下4种养分(有机质、碱解氮、有效磷、速效钾)分别比冠幅外高64.94%,72.87%,61.70%和185.20%;中胡杨为5.36%,5.39%,47.02%和93.43%;小胡杨为27.96%,10.20%,67.48%和218.59%;但不同发育阶段土壤养分的富积率具有一定的差异,有机质表现为极显著,碱解氮和速效钾表现为显著,而有效磷没有显著差异.单株胡杨土壤养分变异系数属中等强度,半方差函数模型除碱解氮为高斯模型外,其他为球状模型, 块金值/基台值C0/(C C0)]的比值均在25%附近,表明空间相关性强烈,整体看来土壤养分的变异性主要由结构性因素引起的.胡杨养分的"肥岛"作用范围(7.5～11.1 m)大于冠幅半径(5 m);通过克里格插值图分析,胡杨立地土壤养分表现出不同程度的"肥岛"效应.
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| 关 键 词： | 胡杨 养分 富积率 肥岛 地统计学 |
Nutrient Characters of Fertile Islands of Populus euphraticu in the Middle Reaches of Tarim River |
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| GAO Jun,WU Hong-qi,ZHU Jian-wen,SHENG Jian-dong,ZHANG Li-yan.Nutrient Characters of Fertile Islands of Populus euphraticu in the Middle Reaches of Tarim River[J].Journal of Xinjiang Agricultural University,2008,31(5). |
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| Authors: | GAO Jun WU Hong-qi ZHU Jian-wen SHENG Jian-dong ZHANG Li-yan |
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| Institution: | GAO Jun,WU Hong-qi,ZHU Jian-wen,SHENG Jian-dong,ZHANG Li-yan (College of Pratacultural , Environmental Sciences,Xinjiang Agricultural University,Urumqi 830052) |
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| Abstract: | The nutrient characters of fertile islands of Populus euphraticu in the middle reaches of Tarim River were studied in this paper using classical statistics and geostatistics principle.Results showed that the surrounding soil nutrients of Populus euphraticu were collected in coronal breadth center:the contents of four kinds of nutritions(organic matter,available nitrogen,available phosphorous and available potassium) were respectively 64.94%,2.87%,61.70% and 185.20% higher than the contents of the external p... |
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| Keywords: | Populus euphraticu nutrition enrichment ratios fertile islands geostatistics |
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