柴河流域土壤特性空间分布特征研究  

Spatial Variability of Soil Properties in Chaihe Basin

作　　者：赵斌[1] 吴献花[1] 张刚[1] 高卫国[1] 吴斌[1] 杨晓[1] 自雪林 缪宏焕[1] 

机构地区：[1]玉溪师范学院/玉溪高原湖泊生态环境研究中心,云南玉溪653100

出　　处：《中国农学通报》2011年第20期224-229,共6页Chinese Agricultural Science Bulletin

基　　金：国家水体污染控制与治理科技重大专项"滇池流域面源污染调查与系统控制研究及工程示范"(2009ZX07102-004)

摘　　要：2010年利用GPS定位,在柴河流域采集土样100个,分析孔隙度、有机质、全氮和全磷的含量,应用传统统计学和地统计学方法对数据进行分析。结果表明,按照1980年全国第2次土壤普查养分分级标准,土壤有机质的平均含量属中等水平,全氮和全磷以较丰富为主。通过半方差函数分析,土壤孔隙度、有机质、全氮和全磷在一定范围内存在空间相关性,而土壤孔隙度、有机质和全磷的空间变异是由结构性因素和随机性因素共同作用引起的。研究揭示了柴河流域土壤有机质、全氮和全磷的空间变异规律及其影响因素,为实现土壤肥力评价和养分资源精准管理提供了科学依据。100 soil samples （GPS used for recording sample location） were collected in Chaihe basin in 2010. Porosity, total soil organic matter, total nitrogen and total phosphorus contents were measured. The spatial pattern of the data was analyzed using both traditional descriptive statistics and geo-statistics. The results indicated that soil organic matter contents was at moderate level of soil fertility, nitrogen and phosphorus were rich, according to the soil fertility classification standards of the second national soil. The semivariograms of geostatistics analysis indicated porosity, total soil organic matter, total nitrogen and total phosphorus were spatial autocorrelations. Spatial autocorrelation and random both contribute to the spatial structure of porosity, total soil organic matter, and total phosphorus. The study showed the spatial pattern soil total soil organic matter, total nitrogen and total phosphorus in Chaihe basin due to complex natural and social variables and provides a scientific basis for the evaluation and sustainable management of soil fertility and nutrient.

关 键 词：柴河流域 地统计学 空间变异 

分 类 号：S158.3[农业科学—土壤学]