[1]江叶枫,郭熙,叶英聪,等.南方丘陵山区耕地土壤养分空间变异及合理采样数[J].江苏农业学报,2017,(03):568-574.[doi:doi:10.3969/j.issn.1000-4440.2017.03.013]
 JIANG Ye-feng,GUO Xi,YE Ying-cong,et al.Spatial variation and reasonable sampling number of soil nutrients in southern China hilly and mountainous regions[J].,2017,(03):568-574.[doi:doi:10.3969/j.issn.1000-4440.2017.03.013]
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南方丘陵山区耕地土壤养分空间变异及合理采样数()
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江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2017年03期
页码:
568-574
栏目:
耕作栽培·资源环境
出版日期:
2017-06-30

文章信息/Info

Title:
Spatial variation and reasonable sampling number of soil nutrients in southern China hilly and mountainous regions
作者:
江叶枫1郭熙1叶英聪1;2孙凯1饶磊1李伟峰1李婕1王澜珂1
(1.江西农业大学江西省鄱阳湖流域农业资源与生态重点实验室/国土资源与环境学院,江西南昌330045;2.江西农业大学林学院,江西南昌330045)
Author(s):
JIANG Ye-feng1GUO Xi1YE Ying-cong1;2SUN Kai1RAO Lei1LI Wei-feng1LI Jie1WANG Lan-ke1
(1.Key laboratory of Poyang Lake Watershed Agricultural Resources and Ecology/Academy of Land Resource and Environment, Jiangxi Agricultural University, Nanchang 330045, China;2.College of Forestry, Jiangxi Agricultural University, Nanchang 330045, China)
关键词:
土壤养分二分法空间变异合理取样数
Keywords:
soil nutrientdichotomyspatial variationreasonable sampling number
分类号:
S159.2
DOI:
doi:10.3969/j.issn.1000-4440.2017.03.013
文献标志码:
A
摘要:
以江西省兴国县丘陵山区为例,取2 398个样点并测定其土壤有机质、有效磷和速效钾含量。运用半变异函数分析土壤养分的空间变异特征,再基于普通克里金法对样点以固定比例进行随机抽样,根据均方根误差波动的绝对值确定一个区间后,采用数学二分法进一步研究取样数。结果表明,有机质的变异系数最大,有效磷次之,速效钾最小;土壤有机质、有效磷和速效钾含量呈现中等空间相关性且变程较小;兴国县丘陵山区土壤有机质、有效磷和速效钾的合理采样数分别为1 366、1 170、1 690,合理采样密度分别为1 hm2 0044个、0038个、0055个。
Abstract:
A total of 2 398 soil samples were collected throughout Xingguo county, Jiangxi province, for detection of the contents of soil organic matter (SOM), available phosphorus(AP), and available potassium(AK). The semi-variogram parameters was used to analyze the spatial variation characteristic of soil nutrients. Random sampling at a fixed ratio was made based on the ordinary Kriging method. Ater a certain interval was achieved based on the absolute value of root mean square error, the reasonable sampling number was studied by dichotomy. The results showed the coefficient of variation decreased in the order of SOM>AP>AK. SOM, AP and AK contents presented moderate spatial dependence and small range. The reasonable sampling number of SOM, AP and AK were 1 366, 1 170 and 1 690, respectively, and sampling density were 0044/hm2, 0038/hm2 and 0055/hm2, respectively.

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备注/Memo

备注/Memo:
收稿日期:2016-12-06 基金项目:国家自然科学基金项目(41361049);江西省自然科学基金项目(20122BAB204012);江西省赣鄱英才“555”领军人才项目(201295) 作者简介:江叶枫(1994-),男,江西余干人,硕士研究生,主要从事土壤资源与环境方面研究。(E-mail)jiangyf0308@163.com 通讯作者:郭熙,(E-mail)xig435@163.com
更新日期/Last Update: 2017-06-29