古夫河上覆水和表层沉积物中总氮和总磷空间分布特征及其相关性

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1、第21卷第4期安全与环境工程Vo1．21NO．42014正7月SafetyandEnvironmentalEngineeringJu1．20l4古夫河上覆水和表层沉积物中总氮和总磷空间分布特征及其相关性曾露，葛继稳，王自业，冉桂花，吴述园，唐佳(中国地质大学湿地演化与生态恢复湖北省重点实验室生态环境研究所，湖北武汉430074)摘要：对古夫河于流17个采样点的上覆水和表层沉积物中总氮和总磷含量进行调杏，利用多元统计方法对数据进行分析，研究了L覆水和表层沉积物中总氮和总磷含量的空间分布特征及其相关性。结果表明：古夫河j：覆水中总氮含量年均值总体上从GF01～G

2、F12样点递减，在GF13～GF18样点增加，部分样点略有波动；上覆水中总磷含量在GF01～GF09样点变化不显著，在GF10～GF18样点分布差异较大；表层沉积物中总氮含量从GF01～GF05样点旱现先增加后减少的趋势，下游无明显的变化规律；表层沉积物中总磷含量无明显的变化规律；总体古夫河上游卉夫一神农架河段卜覆水中总氮含量与表层沉积物中总氮含量无相关性，而在下游古夫～库湾河段(GF14～GF18)，上覆水中总氮含量与表层沉积物中总氮含量成显著正相关；古夫河上覆水中总磷含量与表层沉积物中总磷含量无相关性。关键词：古夫河；上覆水；表层沉积物；总氮；总磷；空间

3、分布特征；相关性中图分类号：X52文献标识码：A文章编号：l671一l556(2014)04—0038—06SpatialDistributionandCorrelationsofTotalNitrogenandTotalPhosphorusinOverlyingWaterandSurfaceSedimentinGufuRiverZENGLu，GEji—wen，WANGZi—ye，RANGuihua，WUShu—yuan，TANGJia(InstituteofEcologyandEnvironmentalSciences，HubeiKeyLaboratory

4、ofWetlandEvolution&EcologicalRestoration，ChinaUniversityofGeosciences，Wuhan430074，China)Abstract：Thecontentoftotalnitrogenandtotalphosphorusinoverlyingwaterandthesurfacesedimentat17sitesofGufuRiverareanalyzedwithmultivariatestatisticalmethodsinordertostudythespatia1distri—butioncha

5、racteristicsandinfluencingfactorsoftotalnitrogenandtotalphosphorusinoverlyingwaterandsurfacesediment．TheresultsindicatethatannualaveragetotalnitrogeninoverlyingwaterofGufuRiverfirstdescendsfromGF01toGF12，andthenthereisafluctuatinguptrendfromGF013tOGF18．Thetotalphosphorusinoverlying

6、waterchangeslittlefromGF01toGF09，andvariesgreatlyfromGF10tOGEl8．ThetotalnitrogeninsedimentsfromGF01toGF05increasesfirstandthendecreaseswithoutsignificantvariationdownstream．Therearenocorrelationsbetweenthecontentsofthetotalnitrogeninsurfacesedi—mentandinoverlyingwaterofGufuRiver，wh

7、iletherearesignificantpositivecorrelationsbetweentotalnitrogeninsurfacesedimentanditsoverlyingwaterfromGF14toGF18．TherearenocorrelationsbetweentotalphosphorusinsurfacesedimentanditsoverlyingwaterofGuruRiver．Keywords：GufuRiver；overlyingwater；surfacesediment；totalnitrogen；totalphosph

8、orus；spatialdistribution；c