文献类型：期刊文献

中文题名：广州南沙海岸防护林群落的生态效应初步研究

英文题名：Study on eco-effect of coast shield forest community at the South Sea of Guangzhou

作者：陈步峰[1] 潘勇军[1] 肖以华[1] 徐锰[1] 陈进[1] 吴敏[1] 段金平[1]

第一作者：陈步峰

机构：[1]中国林科院热带林业研究所

年份：2011

卷号：20

期号：5

起止页码：839-842

中文期刊名：生态环境学报

外文期刊名：Ecology and Environmental Sciences

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：林业公益性行业科研专项(200804006);国家"十一五"科技支撑专题(2006BAD03A1701);广州市绿委"广州市‘青山绿地-林区林带工程’环境生态效应"项目

语种：中文

中文关键词：南沙海岸;防护林群落;高温胁迫光合作用;生态效应

外文关键词：coast of South China Sea; shield forest community; photosynthesis characteristic; eco-effect

分类号：Q948

摘要：采用群落生态学和植物化学监测的研究方法,对广州市南沙海岸滩头近6 a生防护林群落的生物量、高温胁迫光合特征、NPP及吸储C、N、S、Pb、Cd、Cu、Hg的生态效应进行了定位观测研究,结果表明:海岸6种防护林群落的生物量的平均达到10.7 t.hm-2、NPP达到2.5 t·hm-2·a-1、生长要素表现为速生性生长特征。各种海防林群落的年均吸储空间CO2、NO2、SO2质量分别为4.2 t.hm-2、27.1 kg·hm-2和3.4 kg·hm-2,吸储Pb、Cd、Cu分别为13.2、4.4、0.1 g·hm-2,其生态环境功能已经初步凸显,可有效地减少这些元素在地表和土壤积累、迁移或随地表径流输出至生活环境的危害,对于海岸环境区域是非常有益的。雨季高温(气温t≥35.5℃)胁迫下,海岸路网林群落的优势种群净光合速率日均达到9.8μmol·m-2·s-1且乡土树种高于引进树种,高山榕(Ficus altissima)的日最高净光合速率达到14.3μmol·m-2·s-1,较羊蹄甲(Bauhinia blakeana)高0.4μmol·m-2·s-1、较塞楝(Kaya senegaiensis)高2.2μmol·m-2·s-1,优势树种适宜海岸滩头立地、高温胁迫的光合生理特点,是其速生长的原因之一。
In this paper, we studied the typical coast shield forest community, bio-absorbing and accumulating C, N, S and trace elements Pb, Cd, Cu, monitoring of biological communities. The result indicated that mean biomass and NPP on woodland had reached with 10.7 t.hm2 and 2.5 t hm-2 aq separately for the 5-6 age forest community and the forest community has behaved the character ol speed growth. Mean annual increase mete of CO2, NO2 and SO2 on woodland was remarkable and had reached with 4.2 t.hm-2, 27.1 kg＇hm-2 and 3.4 kg＇hm-2 separately, and annual bio-fix of the Pb, Cd and Cu was of 13.2 g·hm^2, 4.4 g·hm^-2 and 0.1 g.hm^-2 separately in the coast shield forest. The environment function has got initial results that must not supersede for the ecological safe of coast line. Mean net photosynthetic rate of preponderance species had reached with 9.8 gmol·m^-2·s^-1 under high temperature intimidate at rainy season daylight in the motorway network of forest. And daily peak photosynthetic rate of Ficus altiss#nahad reached with 14.3 gmol·m^-2·s^-1 that was more than that of Bauhinia blacken and Kaya senegaiensis with 0.4 and 2.2 separately. Physiological suit and responding of the preponderance species was one of the most reason for the soil physics and chemistry, and high lempcralurc imimidate condition.