森林与环境学报2018，Vol.38Issue(2)：142-148,7.DOI:10.13324/j.cnki.jfcf.2018.02.003
南亚热带杉木和红椎林及其混交林的土壤肥力
Soil fertility of pure and mixed forest of Cunninghamia lanceolata and Castanopsis hystrix in south subtropical area
摘要
Abstract
Five different forest types (pure Cunninghamia lanceolata forest, pure Castanopsis hystrix forest, 1 : 1, 1 : 2, 1 : 3 Cun. lanceolata and Cas.hystrix mixed forest) were selected to investigate soil fertility at 5 different soil layers(0-10 cm,10-20 cm, 20-40 cm,40-60 cm and 60-100 cm) in the south subtropics of China.Soil fertility of these forests was assessed by principal component analysis and fuzzy mathematical evaluation method. The results were as follows: pH value ranged from 3.98-4.65 and showed an increase trend with the soil layer going deep. Total potassium content increased, with the increase of soil depth, while soil organic matter,total nitrogen,hydrolyzable nitrogen,available phosphate and available potassium decreased. The differences of soil chemical properties among different forest types were not significant.Pearson correlation analysis indicated that there were significant correlation among soil fertility factors. The results of principal component analysis and fuzzy evaluation method both suggested that soil fertility level decrease with the increase of soil depth. The soil fertility in pure Cas. hystrix forest was relatively higher, while in pure Cun. lanceolata forest was lower than that in other forest types.关键词
杉木/红椎/混交林/土壤肥力/评价Key words
Cunninghamia lanceolata (Lamb.) Hook./Castanopsis hystrix Miq./mixed forest/soil fertility/evaluation分类
农业科技引用本文复制引用
肖石红,高常军,蔡坚,潘文,朱报著,魏龙..南亚热带杉木和红椎林及其混交林的土壤肥力[J].森林与环境学报,2018,38(2):142-148,7.基金项目
广东省科技计划项目(2016B070701008) （2016B070701008）
国家林业局科技创新平台运行补助项目(2017-LYPT-DW-69) （2017-LYPT-DW-69）
广州市森林碳汇计量与监测项目(GZFC-KT2). （GZFC-KT2）
