水土保持学报2011，Vol.25Issue(3)：142-146,5.
红松阔叶混交林林隙土壤养分的空间异质性
Spatial Heterogeneity of Soil Nutrition in the Mixed Broad-Leaved Korean Pine Forest Gap
摘要
Abstract
The spatial heterogeneity and distribution pattern in surface soil layer(0-10 cm) in mixed broad-leaved koren pine forest gap ir Xiao Xing'an Mountains were analysed by the methods of the traditional statistics and geostatistics. The results showed that. pH (CV= 5.28 ％) and available potassium (CV= 7.33 ％) showed weaker variability,other chemical indices exhibited moderate variability. The theoretical models of variation function curve of soil pH, organic matter, total nitrogen, total phosphorous, ammonium nitrogen, nitrate nitrogen, available phosphorous and available potassium were best described by exponential models. The spatial variability of soil nutrient primarily resulted from structural factors,and the spatial heterogeneity degree of these indices was moderate with spatial structural ratio above 25 ％. Both Kriging interpolation method and the isoline maps of soil nutrients revealed that the spatial distributions of upper soil nutrients had the characteristic of patchy or continuous distribution, the spatial distribution of different indices were clearly different.关键词
红松阔叶混交林/林隙/土壤养分/空间异质性Key words
mixed broad-leaved korean pine forest/ forest gap/ soil nutrient/ spatial heterogeneity分类
农业科技引用本文复制引用
刘少冲,段文标..红松阔叶混交林林隙土壤养分的空间异质性[J].水土保持学报,2011,25(3):142-146,5.基金项目
国家自然科学基金(30771708) （30771708）
教育部留学回国人员科研启动基金(2010-1561) （2010-1561）
