摘要
以广西各地油茶种植林地的490个土壤样点的15个养分指标为基础,采用普通克里格插值方法、指数和评价法,分析土壤养分空间变异特征和油茶种植适宜性分区。根据指数和梯度分段值,将油茶土壤养分适宜性划分为3个分区:最适宜、较适宜和不适宜3个分区。分区结果,大部分油茶主产区都在土壤养分最适宜或者较适宜分区内,三江、融水、融安3县处于土壤养分不适宜分区,生产中应适当注意改善土壤养分状况。
Using exponential sum assessment method and ordinary kriging interpolation method, based on 490 soil samples and 15 nutrient indexes in Guangxi Camellia oleifera forest land, spatial variability and suitable areas were studied. According to soil nutrients suitability assessment index, the result of assess- ment divided soil nutrient suitability of Guangxi into three kind of suitable areas including suitable, less suitable and unsuitable areas. Most Camellia oleifera producing areas was in the optimum suitable areas of soil nutrient. Sanjiang, Rongshui, Rong＇an three Counties considered as unsuitable areas which should improve soil nutrients status.
出处
《林业调查规划》
2014年第3期1-6,11,共7页
Forest Inventory and Planning
基金
广西壮族自治区林业科学研究院"基本业务费项目"(201430)
广西林业科技项目"基于GIS的广西国家木材战略储备基地土壤肥力评价及配方施肥专家咨询系统构建"
关键词
油茶林地
GIS
土壤养分
空间变异特征
肥力适宜性
Camellia oleifera forest land
GIS
soil nutrient
spatial variability
fertility suitability
