水土保持学报2017，Vol.31Issue(4)：184-190,7.DOI:10.13870/j.cnki.stbcxb.2017.04.030
城市化对珠江三角洲存留常绿阔叶林土壤有机碳组分及其碳库管理指数的影响
Effect of Urbanization on Soil Organic Carbon Fractions and Carbon Pool Management Index in Remnant Evergreen Broad-leaved Forests of the Pearl River Delta
摘要
Abstract
In order to reveal effect of urbanization on soil organic carbon fractions and carbon pool management index,soil samples collected from six remnant evergreen broad-leaved forests in the Pearl River Delta were analyzed.The six sampling areas included three urban forests (botanical garden,Baiyunshan and Maofengshan) and three suburb ones (Heshan,Conghuashimen and Dinghushan).Soil samples were collected from 0-10 cm and 10-20 cm soil layers,respectively,and total organic carbon (TOC),readily oxidizable organic carbon (ROC) and non-readily oxidizable organic carbon (NROC) of the samples were determined.Results were as follows:(1) TOC,ROC and NROC content of urban forests soil was significantly lower than that of the suburban forests soil (P＜0.05).(2) In the surface soil (0-10 cm layer),soil carbon pool activity and carbon pool activity index of the urban forests were both significantly higher than those of the suburban forests (P＜0.05),and in the sub-surface soil (10-20 cm layer),the above pattern was also observed but there was no significant difference in both indices between these two kinds of forests (P＞0.05).(3) In both two soil layers,soil carbon pool index and carbon pool management index of suburban forests were both significantly higher than those of urban forests (P＜0.05).This study suggests that urbanization increased soil organic carbon activity of the remnant evergreen broad-leaved forests,but urbanization was detrimental to the accumulation of total organic carbon in soil.关键词
常绿阔叶林/土壤有机碳/土壤有机碳组分/碳库管理指数/城市化Key words
evergreen broad-leaved forests/soil organic carbon/soil organic carbon fractions/carbon pool management index/urbanization分类
农业科技引用本文复制引用
张雪莹,陈小梅,危晖,林媚珍..城市化对珠江三角洲存留常绿阔叶林土壤有机碳组分及其碳库管理指数的影响[J].水土保持学报,2017,31(4):184-190,7.基金项目
广州市属高校科技计划项目(1201430746) （1201430746）
国家自然科学基金项目(31400415) （31400415）
广东省普通高校青年创新人才项目(2014KQNCX110) （2014KQNCX110）
