獐子岛养殖海域颗粒有机碳、颗粒氮的时空分布特征  被引量:3

Spatial-temporal distribution of particulate organic carbon and particulate nitrogen in the mariculture areas of Zhangzhi Island

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作  者:刘毅[1,2] 张继红[2] 杜美荣[2] 蔺凡 丁刚 吴文广[2] 房景辉[2] 

机构地区:[1]中国海洋大学水产学院,山东青岛266071 [2]农业部海洋渔业可持续发展重点实验室,青岛海洋科学与技术国家实验室,海洋渔业科学与食物产出过程功能实验室,中国水产科学研究院,黄海水产研究所,山东青岛266071 [3]山东省海洋生物研究院,山东青岛266071

出  处:《海洋科学》2016年第5期9-18,共10页Marine Sciences

基  金:国家自然科学基金项目(31302193);黄海水产研究所级基本科研业务费(20603022015017-3,20603022015017-2,20603022011003);公益性行业(农业)科研专项(201203017)~~

摘  要:2011年8月、10月、12月和2012年4月对大连獐子岛养殖海域共14个站位进行了大面调查。对其中颗粒有机碳(POC)和颗粒氮(PN)的时空分布特征进行了研究。结果表明,獐子岛养殖海域水体中POC质量浓度的季节变化趋势是:夏季>秋季>春季>冬季。夏季POC质量浓度最高,表、底层的质量浓度分别为0.159~1.672 mg/L和0.045~0.834 mg/L,平均值分别为(0.867±0.451) mg/L和(0.319±0.204) mg/L。冬季表、底层POC质量浓度最低,表、底层POC质量浓度分别为0.020~0.530 mg/L和0.061~0.458 mg/L。平均值分别为(0.240±0.125) mg/L和(0.221±0.129) mg/L。四个季节的POC质量浓度平面分布较为均匀。PN 质量浓度的季节变化趋势是:夏季>秋季>冬季>春季。夏季 PN 的质量浓度最高,表、底层 PN的质量浓度分别为0.026~0.439 mg/L和0.020~0.393 mg/L,平均值分别为(0.193±0.067) mg/L和(0.172±0.060) mg/L。春季表、底层PN质量浓度最低,表、底层PN质量浓度分别为0.059~0.178 mg/L和0.024~0.212 mg/L,平均值分别为(0.120±0.047) mg/L和(0.100±0.050) mg/L。PN与POC的分布特征相似,空间分布均匀。叶绿素 a(Chl-a)质量浓度的变化趋势为:夏季>秋季>春季>冬季。POC、PN和 Chl-a 的垂直分布规律相似,春季底层质量浓度高于表层,夏秋两季表层质量浓度高于底层,冬季表、底层质量浓度基本一致。根据C/N以及POC/Chl-a的比值对POC的来源进行初步分析,表明该海域的POC主要来源于海洋生物,并且受陆源的影响较小。Several cruises have been conducted on the Zhangzi island aquaculture region, with 14 stations, in Au-gust, October, and December 2011 and April 2012. Hydrography data on particle organic carbon (POC) and par-ticulate nitrogen (PN) was collected, and the spatial–temporal distribution of the data was studied and analyzed. The results showed that variation in concentration of POC is in the following order: summer > autumn > spring > winter. The POC concentration in summer tends to be the highest, with a variation from 0.159 to 1.672 mg/L and 0.045 to 0.834 mg/L for surface and bottom water, respectively; the average POC concentration for the surface is (0.867 ± 0.451) mg/L and for bottom is (0.319 ± 0.204) mg/L. In winter, the bottom POC concentration reaches a minimum, and the range and average concentration for surface water is 0.020~0.530 mg/L and (0.240 ± 0.125) mg/L, respec-tively, and for the bottom water is 0.061~0.458 mg/L and and (0.221 ± 0.129) mg/L, respectively. The horizontal distribution of POC concentration tends to be homogenized for each season. The variation in PN concentration is as follows: summer > winter > autumn > spring. Similar to POC, the PN concentration in summer tends to be the highest with a range and average value of 0.026~0.439 mg/L and (0.193 ± 0.067) mg/L, respectively, for surface water, and 0.020~0.393 mg/L and (0.172 ± 0.060) mg/L, respectively, for bottom water. The minimum concentration of PN tends to appear in spring and the range and average are 0.059~0.178 mg/L and (0.120 ± 0.047) mg/L, respectively, for sur-face water, and 0.020~0.393 mg/L and (0.100 ± 0.050) mg/L, respectively, for bottom water. The PN concentration exhibits a spatial homogenized distribution similar to that of POC. The temporal distribution of concentration of Chl-a is as follows: summer > autumn > spring > winter. Vertical distributions for POC, PN, and Chl-a shows some similarities. The concentration of

关 键 词:獐子岛 颗粒有机碳 颗粒氮 分布特征 

分 类 号:S912[农业科学—水产科学]

 

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