滦河口湿地环境因子变化对黑嘴鸥繁殖影响研究

比较滦河口湿地1996年和2001～2003年的土壤含水量、pH值、砂粒含量、粉粒含量等主要环境因子之间差异的显著性,结果表明:土壤砂粒含量达到极显著水平(t=14.4,P<0.01),土壤粉粒含量有极显著差别(t=11.033,P<0.01),土壤含水量达到显著水平(t=2.792,P<0.05),土壤pH值没有显著差别(t=1.755,P>0.05);黑嘴鸥繁殖地、人工虾鱼池、河口滩涂3种环境土壤砂粒含量差异达到显著水平(F>F0.05;P<0.05),进而探讨滦河口湿地环境因子对黑嘴鸥繁殖条件的影响,为恢复滦河口湿地自然生态系统和黑嘴鸥原繁殖地的生态环境提供科学依据。

The influences of changes of environmental factors in Luanhekou wetland on breeding conditions of the Saunders's gull

The remarkable differences of the main environmental factors, such as the content of water, the pH value, and the analysis of the granularity in the soil etc., were compared between 1996 and 2001-2003 in Luanhekou wetland. The results show that the differences of the content of sand and the content of silt in soil are very remarkable respectively (P<0.01), the difference of the content of water is remarkable (P<0.05) and the difference of the pH value in soil is not remarkable (P>0.05). There are remarkable differences respectively in the content of sand in soil among the breeding areas of Larus saundersi, the manpower rearing ponds, outfall and low-lying beach land environments (F>F0.05;P<0.05).These environmental changes of Luanhekou wetland which influenced on the breeding conditions of the Saunders's gull can afford the scientific basis for restoring the natural ecosystem and the original breeding regions of the Saunders's gull in Luanhekou wetland.