取样间隔与叶绿素含量观测结果分析

SAMPLING INTERVAL AND OBSERVATION OF CHLOROPHYLL CONCENTRATION

依据 1 994年春季 ,东海表层水叶绿素含量走航观测资料 ,分析不同取样间隔时叶绿素含量的空间分布和频数分布。结果表明 ,取样间隔为 0 .0 1 km,0 .1 km和 1 km时的空间分布和频数分布总体上是一致的。鉴于取样间隔为 1 km时的观测数据量仅是取样间隔为 0 .0 1 km时的观测数据量的 1 % ,因此 ,1 km是优选取样间隔。

Based on data of surface layer chlorophyll a concentration in the East China Sea in Spring of 1994 collected by continuous flow measurement, this paper analyzed spatial distribution and frequency distribution of chlorophyll a concentration on different sampling interval. The conclusion is as follows: the general spatial and frequency distribution is alike on sampling interval 0.01 km、0.1 km and 1km. Because the data number on sampling interval 1km is only 1 % of that on sampling interval 0.01 km, 1km was considered as optional sampling interval.