摘要
本文对上海浦东东海海滩上［３１°１＇Ｎ］芦苇植被自堤至海水边各地段的生物生产力、生长特性及土壤状况作了测定。其平均生物生产力为２．０７４±０．５５４ｋｇｍ￣（－２）ａ￣（－１），其中地上部和地下部生物量分别为１．４３３±０．３８２和０．６４１±０．５６６ｋｇｍ￣（－２）ａ￣（－１）。观察了自芦苇出土起，大气ＣＯ＿２浓度加倍对芦苇生长的影响。结果表明，处理４４ｄ后植株叶面积和比叶重相应提高，生物生产力比对照增加５３．７％，其光合产物主要分配在地上部分。试验结束时，ＣＯ＿２加浓处理的叶片叶绿素含量和在正常空气中的光合速率与对照相似。
he bioproductivity and growth characteristics of reed vegetation and the soil conditionswere measured on the beach of east China Sea in the east of Shanghai 31°1'N at differentdistances from the levee to the sea sbore,Its mean net primary production was 2.074±0.554kg m￣(-2)a￣(-1),of which the biomass of above-ground and under-ground parts were 1.433±0.382 and 0.641±0.566kg m￣(-2)a￣(-1) ,respectively。Experimental results for reed plants growing over the levee indicated that,when atmo-sphric CO_2 concentration was doubled,the leaf area andspecific leaf weight were increased。After 44 days of treatment with a doubled CO_2 concentration,the bioproductivity was 53.7%higher than the control and most of the photosynthates were allocated to the above-groundpart.At the end of the experiment,photosynthetic rate(in normal air)and chlorophyll con-tent in the treated plants were similar to those in the control。
出处
《生态学报》
CAS
CSCD
北大核心
1994年第4期397-401,共5页
Acta Ecologica Sinica
基金
联合国环境规划署项目和国家自然科学重点基金
关键词
芦苇
生物生产力
二氧化碳
reed, bio-productivity,doubled CO_2 concentration。
