摘要
应用地统计学与GIS技术,将土壤pH值室内布点和实地监测相结合,研究广西果化示范区土壤pH值的空间变异特征。结果表明：5~30 cm各层土壤的pH均值在6.35~6.57之间,变异系数在9.49%~10.10%之间,不同深度之间土壤pH值的垂直变异不显著。其中,5 cm深度的表层土壤pH值变异系数较大,属于中强度变异（10%
By using Geo-statistics and GIS, combining with indoor sampling point distribution and field monitoring of soil water content, the spatial variability characteristics of soil pH in Guohua demonstration area were studied. Statistical analysis showed that the average soil pH among various layers was from 6.35 to 6.57 while variation coefficient was from 9.49% to 10.10%, which revealed variation coefficient of soil pH had weak variability. Variation coefficient of soil pH in 5 cm layer was relatively bigger, belonging to middle intense variation （10%〈CV〈30%）; variation coefficients of soil pH from 10 cm layer to 30 cm layer were relatively smaller, belonging to low intense variation （CV 〈10%）. Soil pH showed uneven arc-shaped and patchy spatial distribution, obvious spatial agglomeration, and many gradually gradient changing strips. The minimun spatial variable scale of soil pH under different layers was 660 m, which could be served as the best interval of soil pH for sampling point distribution in Guohua demonstration area.
出处
《广东农业科学》
CAS
CSCD
北大核心
2013年第11期48-51,F0003,共5页
Guangdong Agricultural Sciences
基金
"十二五"国家科技支撑计划项目(2010BAE00739-02)
广西科技开发项目(桂科转10124005
桂科攻1140002-3-1)
国家自然科学基金(41261005)
广西自然科学基金(2013GXNSFBA019222)
桂林市科学研究与技术开发项目(20110120-6
20120122-2
20120125-1)
广西师范大学教育发展基金会教师成长基金(JS2012009
JS2012012)
中国地质科学院岩溶生态系统与石漠化治理重点开放实验室项目(KERDC201202)
广西教育厅科研项目(201106LX070
201203YB028
2013YB040)
