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Analysis on the Climate Change Characteristics in Recent 50 Years in Qixinghe Wetland of Heilongjiang Province 被引量:3
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作者 王芳 高永刚 姜春艳 《Meteorological and Environmental Research》 CAS 2010年第6期6-8,共3页
Based on the daily temperature and precipitation data during 1961-2007 in 81 meteorological stations of Heilongjiang Province,the climate change trend characteristics of temperature and precipitation in Heilongjiang P... Based on the daily temperature and precipitation data during 1961-2007 in 81 meteorological stations of Heilongjiang Province,the climate change trend characteristics of temperature and precipitation in Heilongjiang Province,Shuangyashan area,Baoqing County and Qixinghe Wetland were contrasted and analyzed by adopting the climatology statistics method. The results showed that the temperature change trend in Qixinghe Wetland was consistent with the temperature warming trends in Heilongjiang Province and Shuangyashan area. The annual average lowest temperature was the most obvious in the temperature warming trend,and the annual average temperature was the second. The annual average highest temperature was the third. Qixinghe Wetland had the important regulation effect on the local(Baoqing) climate. The annual precipitation in recent 50 years in Baoqing County,Qixinghe Wetland presented the decline trend and in Heilongjiang Province,Shuangyashan area presented the increase trend as a whole. In the trend which the temperature obviously rose,and the precipitation declined overall in Qixinghe Wetland,the protection of Qixinghe Wetland maybe faced with the restriction of water scarcity condition in the water resources aspect. One of important ways which solved with the water scarcity problem in Qixinghe Wetland maybe was strengthening the artificial effect weather work and using sufficiently the cloud water resources. 展开更多
关键词 qixinghe wetland TEMPERATURE PRECIPITATION Climate change China
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Preliminary description of diatom community and its relationship with water physicochemical variables in Qixinghe Wetland 被引量:3
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作者 范亚文 李晶 +1 位作者 门晓宇 刘妍 《Chinese Journal of Oceanology and Limnology》 SCIE CAS CSCD 2012年第3期379-387,共9页
Wetlands play a very important role in ecosystems. Qixinghe Wetland is a nature reserve area in northeastern China. In this paper, diatom communities and environmental qualities were investigated at eight sites in Qix... Wetlands play a very important role in ecosystems. Qixinghe Wetland is a nature reserve area in northeastern China. In this paper, diatom communities and environmental qualities were investigated at eight sites in Qixinghe Wetland. This study was to examine diatom species patterns in relation to environmental variables in wetlands, and to use diatoms as indicators to water quality in wetlands and wetland classification. Diatoms were sampled in summers and autumns in 2002 and 2004, during which 180 taxa were identified. Environmental variations in pH, temperature, biochemical oxygen demand (BOD), and chemical oxygen demand (COD) were measured. The seasonal composition and abundance of diatoms changed greatly during the study period. The relationship between diatoms and chemical water quality was estimated statistically. Canonical correspondence analysis (CCA) with forward selection and Monte Carlo permutation tests revealed that all water environmental variables changed during the study period (P<0.05). Among all the parameters, variation in BOD among the sites was a very important determinant of species composition according to the CCA, and BOD decreased from 2002 to 2004. Our results suggest that the water quality had improved during the three-year period because of enhanced environmental protection with less human disturbance. We conclude that diatoms can be used to indicate water quality and habitat conditions in this wetland. 展开更多
关键词 DIATOM canonical correspondence analysis (CCA) qixinghe wetland
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