文献类型：期刊文献

中文题名：广州南沙人工林海桑属群落及土壤的动态变化

英文题名：Dynamic changes of artifi cial mangrove Sonneratia genus communities and soil characteristics in Nansha district of Guangzhou city

作者：张晓君[1,2] 管伟[2] 朱宁华[1] 廖宝文[2] 徐蒂[1]

第一作者：张晓君

机构：[1]中南林业科技大学;[2]中国林业科学研究院热带林业研究所

年份：2014

卷号：34

期号：9

起止页码：103-106

中文期刊名：中南林业科技大学学报

外文期刊名：Journal of Central South University of Forestry & Technology

收录：CSTPCD;;北大核心:【北大核心2011】；CSCD:【CSCD_E2013_2014】；

基金：国家自然科学基金项目(41176084);广州市林业和园林局项目"广州南沙湿地效应监测"

语种：中文

中文关键词：人工林红树海桑属群落;土壤特性;动态变化;南沙

外文关键词：artiifcial mangroveSonneratia genus communities;soil properties;dynamic change;Nansha district in Guangzhou city

分类号：S714.2

摘要：通过分析广州南沙人工红树植物海桑属群落特征及其土壤特性的动态变化,揭示红树植物海桑属群落及土壤变化的原因。结果表明:1在近5年的变化过程中可以看出遭受寒害对纯林海桑群落的影响最大:寒害后海桑林全部死亡,在无人为干扰的情况下,短叶茳芏迅速占据海桑林迹地;无瓣海桑+海桑混交林群落物种变化最为明显,其中无瓣海桑的郁闭度寒害后随着植被的恢复逐渐增加到35%,密度下降到450株·hm-2,出现了三叶鱼藤和海雀稗,林下未见无瓣海桑幼苗。2随着植被的恢复,土壤的机械组成和化学性质都发生了改变,土壤黏粒的比重增加,质地均一,pH值呈现下降的趋势,盐分含量增加,有效磷、速效钾的含量都有明显的上升趋势,速效氮由于水体淋溶及植物吸收呈现下降的趋势。
Through analyzing the dynamic changes in the community structure and soil characteristics of the artificial mangrove Sonneratia genus, the reasons of the artiifcial mangroveSonneratiagenus in community characteristics and soil changes were revealed. The surveying results are as follows： （1）from the changing process in recentifve years, it can be found that the chilling injury had deeply influenced on pureSonneratiacommunity; the aerophore community all died after the chilling, short leaf cyperus malaccensis rapidly grew up in this deforested place caused by the chilling in the absence of human disturbance case; While the species changes were most obvious inpetalous aerophore ＋aerophore community,as the vegetation recovery the canopy density of petalous aerophore increased to 35%, the density decreased to 450 tree·hm-2,Derris trifoliate andPaspalum vaginatumSw were found, the aerophore seedlings under the community did notifnd; this means that the chilling had a slightly influenced to the growth of vegetations; （2） After the chilling with the restoration of vegetations, the soil mechanical composition and chemical properties both changed, concomitantly the proportion of clay soil increased, the soil emerged uniform texture, the pH value decreased completely, salt content increased and the nutrient elements of effective phosphorus, rapidly-available potassium content had obvious rising trend, due to the water leaching and plant absorption the available nitrogen showed a trend of decline.