中文摘要：

利用1957～2006年辽河三角洲湿地温度、降水、日照等气候因子的监测资料，通过气候统计分析方法，研究气候变化对辽河三角洲湿地植物种群演变的影响，结果表明：近50a，辽河三角洲地区增暖高达1．8℃·（50a）^-1，明显高出全国增暖的速率0．84℃·（50a）^-1；降水日数50a减少了13d．此外，蒸发量呈略减少趋势；日照时数、平均风速和平均相对湿度减少趋势更为明显．受气候变化影响，辽河三角洲湿地水稻发育期明显缩短，芦苇的萌发特征呈提前趋势，翅碱蓬自2000年开始显著退化；小叶杨的芽开放期逐渐提前，落叶期逐渐偏晚．

英文摘要：

Liaohe River Delta wetland as one of the wetlands in China is an important part to climate change and human activities seriously affected. By using the date of temperature, precipitation, sunshine and so on from1957 to 2006, the climate change on the impact of the plant population evolution in Liaohe River Delta wetlands was studied with climate statistical analysis methods. The results showed that nearly 50 years,the temperature of Liaohe River Delta region warmed up to 1.8 ℃·（50 a）^-1,was significantly higher than the national warming rate 0.84 ℃·（50 a）^-1. Precipitation days decreased 13 d during 50 years. In addition, the evaporation showed a slightly decreasing trend; sunshine hours, the average wind speed and average relative humidity had a more obvious decreasing trend. Affected by climate change, the development of rice shorten, the germination characteristics of reed was ahead of 6 d trends and Suaeda degraded significantly in the different periods since 2000. Populus simonii buds opening period were ahead and the deciduous period delayed gradually.