| Bird migration is one of the most notable biological phenomena in the nature. The world tens of billions of migratory birds migrating between breeding and wintering grounds each year.Owing to the large-scale migration, makes the distribution of birds appear vary with seasons and the local and global change. By a wild animal world authoritative research institutions in from all over the world more than 200 birds subject papers were evaluated, showing the impact of climate change on global birds. Sufficient scientific evidence to suggest that,climate change is changing the behavior of birds, Karl Mallon (1998) said that climate change makes more and more birds are finding it hard to place the change of some key factors in the ecological environment adaptability, some birds can’t migration normally. Climate had a great influence on bird migration, As a kind of environmental factors, it has been the important factor in the development of bird migration characteristics,for example,climate affects the festival season changes,in the cold years,will delay arrival of the spring migration.The climate warming,will make the migration of the spring coming in advance.This article research for heilongjiang province MaoEr mountain areas, research data for 16 years from 1999 to 2015 year of record flagged wader birds as well as the corresponding meteorological data information,meteorological data information from shangzhi weather stations. In this paper, by means of flagged wader birds, The yellow bunting, bridled bunting, grey head bunting as the research object, will three bunting to bow down in the process of migration, peak and end date combined with corresponding phase temperature data.Try to find the temperature change on the influence of three kinds of bunting migration law of time.To affect the first spring yellow throat bunting population of major meteorological factors critical date value is the average temperature is greater than zero.The average daily temperature is greater than 5 degrees date value, Annual average temperature in March and April.Affect end day spring yellow throat bunting population is the main meteorological factors average temperature in March and April.To affect the first spring grey head bunting population of major meteorological factors critical date value is the average temperature is greater than zero,the average daily temperature is greater than 5 degrees critical date value,the average daily temperature is more than ten degrees critical date value,the April month average temperature.Affect the spring grey head bunting daily average temperature peaks on duty the main meteorological factors is greater than 5 degrees critical date value,the average daily temperature is more than ten live critical period value,the April month average temperature.Spring grey head bunting population ends, and the temperature has no relevance.Affect the spring bridled bunting population first to the major meteorological factors is the average temperature is more than ten degrees critical date value.Affect the spring bridled bunting is peaks on duty the main meteorological factors in February month average temperature.Spring bridled bunting population ends, and the temperature change has no relevance.Overall,Three bunting migration to bow down with an average temperature (greater than 0 ℃,5℃,10℃) were significantly positive correlations,and negatively correlation with average temperature,migratory peak day with an average temperature (greater than 0℃,5℃, 10℃) was a positive correlation,and negatively correlation with average temperature,migration of end of day with an average temperature (greater than 0℃,5℃,10 ℃) no correlation, and negatively correlation with average temperature.So the results of the analysis found yellow throat bunting, grey head bunting, bridled bunting migration to bow down to the temperature (0 ℃,5℃,10 ℃) has a lot of relevance, when each spring to the average daily temperature 0℃ or 5℃ and 10℃, these three bunting will arrive MaoEr mountain areas, but due to the annual temperature change,so the three bunting time of arrival in MaoEr hills around every year there are volatility.Yellow bunting, grey head bunting, bridled bunting migration peak day and day average temperature (greater than 0℃,5℃,10℃) has significant positive correlation,the average daily temperature (greater than 0℃,5℃,10℃) higher value,numerical migration peak day time,peak day of arrival of the late date.Yellow bunting, grey head bunting, bridled bunting migration, and 2 month until may calibrate correlation analysis, The results found that yellow throat bunting, grey head bunting migration to bow down and two to be inversely associated with the average temperature in May,the higher the average temperature in and May April,Yellow throat bunting and bunting grey head first into the earlier day.Yellow bunting, grey head bunting, bridled bunting migratory peak day and two to significantly negatively correlated to the average temperature in May,the higher the average temperature in February,May,April.the smaller, peak arrival time value,peak day coming early. Yellow throat bunting migration ends, and negatively correlated with both may the temperature, the higher the average temperature in May and April,Yellow throat bunting migration end date earlier.According to the above correlation analysis.To illustrate three bunting first is highly affected by the temperature change,and because the temperature at the same time each year is different, the first to date, there is obvious fluctuation,the volatility in peak day and the end of the migration of relative weakening,therefore, discussion part of this article will analysis the reason. |
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