摘要
1983—1984年,测定了东湖水柱总沉降颗粒有机物中的碳、氮、磷、叶绿素a含量和浮游动物数量,以及该湖浮游动、植物优势种的干重/湿重、C/N及C/P比值。利用所得数值计算出其颗粒有机碎屑的沉降速率。东湖这两年的颗粒有机碎屑的沉降速率[g/m^2·a),Ⅰ站分别为10.67与10.97(碳),2.15与2.68(氮)及0.29与0.30(磷);Ⅱ站分别为10.35与7.26(碳),2.17与1.12(氮)及0.22与0.16(磷)。与水柱浮游植物净生产量相比,这两年有机碎屑碳的沉降量,Ⅰ站仅占1.96％与2.39％,Ⅱ站占1.36％与0.93％。
An investigation for measuring the sedimentation rates of particulate organic detrital carbon, nitrogen, as well as phosphorus, was carried out in the Donghu Lake, Wuhan from January, 1983 to November, 1984. During this two-year period, the contents of carbon, nitrogen, phosphorus and chlorophyll a in the settled organic matter were investigated, and the ratios of dry wt./wet wt., C/N, and C/P of the dominant plankters were measured. The sedimentation rate of POD in terms of carbon, nitrogen and phosphorus were calculated.The sedimentation rates of POD [g/(ma·a)] of the Lake, 1983-1984, Station I, are 10.67 and 10.97 (C), 2.15 and 2.68 (N), 0.29 and 0.30 (P); Station Ⅱ, are 10.35 and 7.26 (C), 2.17 and 1.12 (N), 0.22 and 0.16 (P), respectively in sequence of the years.Comparing to the net phytoplankton production carbon, the particulate organic detrital carbon accounts for only a small percentage, they are 1.96% and 2.39% (Station Ⅰ), and 1.36% and 0.93% (Station Ⅱ).
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1989年第2期163-170,共8页
Oceanologia Et Limnologia Sinica
