浙江省森林表层土壤基本化学性质和有机碳储量的空间变异

摘要

The paper is to study spatial distribution of forest soil pH, available phosphorus (AP) , available potassium (AK), alkali-hydrolyzable nitrogen (AN), and organic carbon (OC) across Zhejiang Province using geographical information system (GIS) technology, geostatistical analysis methods, and a correlation analysis. Results indicated that, AP fit a Gaussian model; AN fit a spherical model; and OC, AK, and pH fit an exponential model. Geography spatial analysis distribution, the result maps of soil organic carbon (SOC) and AN revealed strong spatial similarity with high concentrations mainly located in Chun'an County and Lishui City. The correlation analysis further confirmed a highly significant correlation (P<0.01) between SOC and AN. [Ch, 3 fig. 5 tab. 25 ref.]%采用地理信息系统(GIS)与地统计学相结合的方法,对浙江省森林表层土壤(0～10cm)有效磷、速效钾、碱解氮、有机碳和pH值的空间变异性进行研究.结果表明:全省表层土壤基本化学性质和有机碳数据通过对数转换基本符合正态分布；在空间分布研究上,有效磷符合高斯模型,碱解氮符合球状模型,有机碳、速效钾、pH值符合指数模型;在全省表层土壤基本化学性质和有机碳的克里格插值结果中,有机碳与碱解氮的空间分布图高值分布区在空间地理位置上较相似,集中分布在海拔较高的淳安、丽水地区,有效磷、速效钾、pH值空间分布图高低值区域差异较大,有机碳与碱解氮呈极显著正相关性(P＜0.O1).