摘要
研究分析崇明东滩沉积物类型对底栖动物种群生长的限制和底栖动物对不同类型沉积物的选择性。结果表明,砂质的低潮滩较适宜双壳类底栖动物的生长,在四季里,栖息在低潮滩的双壳类底栖动物占整个潮滩双壳类数目的比例分别高达73.4、66.4、98.5和96.9%;相反,腹足类底栖动物适宜生长在高潮滩的粘土质粉砂,四个季度中分别有77.5、64.4、69.3和92.4%的腹足动物栖息在高潮滩;甲壳类多栖息在高、中潮滩,但在9月份,由于正是蟹类的生殖季节,低潮滩的甲壳动物却占有了相当的比例,约51.6%。并以食悬浮物底栖动物和食底泥动物的分布丰度对沉积物粒径分别做回归性分析,得到方程分别是y=39.496x-790.07(r=0.9223),y=-127.27x+6037.7(r=0.9489)。
The effects of sediment types on the benthos and the sdectivity of benthos on the sediment types were studied. The result shows that the sand-silt in low tide flat is fit for bivalve to live, and in the spring, summer, autumn and winter, the percentage of bivalve lived in the low tide flat is 73.4% ,66.4% ,98.5% ,96.9%, respectivdy, on the contrary the clay-silt in high tide flat is fit for gastropod to live, the percentage of gastropod lived in the high tide flat is 77.5% ,64.4% ,69.3% ,92,4% in the four seasons. The crustacean is fit to live in the high or middle tide flat, but in the September, the percentage of crustacean lived in the low tide flat reaches to 51.6% because of the procreation season, in addition, the lineal regression analysis of deposit-feeding , suspended- matter-feeding benthos abundance and median grain size respectively is done, the formulas y = 39. 496 x - 790.07 （ r = 0. 9223 ）, and y = - 127.27x ＋ 6037.7（ r = 0.9489） were made.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2006年第1期24-26,48,共4页
Marine Environmental Science
基金
科技部国家重点基础研究发展规划(973)项目(2002CB412405)
教育部骨干教师计划项目
关键词
长江口
崇明东滩
底栖动物
沉积物
Changjiang Estuary
Chongming tidal flat
benthos
sediment
