| Global climate change has a profound impact on human survival and development. Climate change is due to the greenhouse effect caused by global warming and its causes of a series of meteorological factors for change. The "Twelfth Five " plans in china actively respond to global climate change, strengthen scientific research on climate change, and actively carry out international cooperation in dealing with global climate change.Disaster of forest pests in China is one of the major natural disasters. It does not like fire, flood, earthquake or other disaster which was dramatic and tragic, but can cause great harm to forest ecosystem and people’s health, known as the" non-smoky forest fire". According to statistics, China’s forestry harmful pests amounted to 8000 species, among which nearly 300 species caused serious harm to forests. The annual occurrence area of the pests is about 10 million hectares and the direct economic losses and the loss of ecological value are as high as 880 hundred million Yuan or above. With climate change, Chinese forestry harmful biological disasters harm was aggravated the situation. Studying the effect of climate change on Chinese forestry pests and putting forward the corresponding countermeasures are our urgent tasks of science in national forestry pest control work.This paper summarized the forestry pest’s variation range and characteristics, analyzed the possible trends, discussesd the corresponding measure under the conditions of climate change and Heilongjiang province forestry pests changes, using the ecology, statistics, management theory, qualitative analysis and quantitative analysis, normative research and practice of integration approach, the relevant data and field survey data on the basis of defining.The results show that, Heilongjiang Province, the average temperature of the overall upward trend is given priority to, every year to 0.05 degrees warming trend of increasing, significant. The average temperature change trend of 13 cities in Heilongjiang province are basically the same, with latitude increasing temperature generally tend to decrease gradually. The annual average temperature of 3 degrees in Heilongjiang province. Heilongjiang Province, the average annual minimum temperature is also on the rise, but did not reach significant level. In 2008 and 2009 appeared very low temperature.13 cities in Heilongjiang province 1971-2009 annual mean minimum temperature change tendency basic consistent, the overall performance of an upward trend, in the latitude difference is not the case, the main factors affecting the degree of latitude was not the annual minimum average temperature. Heilongjiang Province, annual mean minimum temperature of-2.50 DEG C. The average maximum temperature in Heilongjiang province is on the rise, increased significant, increasing by an average of 0.07 DEG c. In 2008 and 2009 appeared average maximum temperature sharply rising phenomenon. The average maximum temperature change trend of 13 cities in Heilongjiang province are basically the same, with latitude increasing temperature generally tend to decrease gradually. Heilongjiang Province, the annual average maximum temperature of 9.24 degrees celsius. In 1988 and 1989 is the turning point of the change of temperature.Change of annual precipitation in Heilongjiang province is relatively complex, the overall downward trend, but the decline trend not obvious. The average annual precipitation in Heilongjiang province 532.55mm. The 13 cities of Heilongjiang Province, the annual precipitation change trend of consistency is a bit poor, but the majority of the City show some similarity. Mainly in less rainfall in the north area, more precipitation in southern area. Heilongjiang Province, the annual average relative humidity decreased, annual reduction of more than 0.06%, the trend of lower reach significant level. Heilongjiang Province, the annual average relative humidity is 66.35%. The 13 cities of Heilongjiang Province, the annual average relative humidity change tendency is consistent. Heilongjiang Province, the annual sunshine duration decreased, but the decreasing trend was not significant. Heilongjiang Province, the annual sunshine duration 2522.17h. The number of the same change trend in 13 cities of Heilongjiang Province, the annual sunshine time of 1971-2007. For the overall performance of annual sunshine east area number less than the western region.Heilongjiang province forestry pest occurrence degree are different area and the annual average temperature had very significant positive correlation with the average temperature increased, the occurrence area increased; in addition to moderate occurrence area are with annual rainfall reached significant negative correlation with the precipitation increase the occurrence area decreased. But the correlation of moderate occurrence area and precipitation in close proximity to a significant degree. The occurrence of the total area, Heilongjiang province forestry pest occurrence area, mild moderate occurrence area and severe occurrence area in the annual average temperature rise every 1 deg.c, will increase to 80000 Hm2,20000 Hm2,30000 hm2 and 30000 hm2 respectively the trend, in the next period, Heilongjiang province forestry pest occurrence area year after year increase. The annual average temperature of Heilongjiang province forestry pests occurrence area and moderate severe occurrence area of effect greater than mild occurrence area. The occurrence of the total area, Heilongjiang province forestry pest occurrence area and mild severe occurrence area every lower annual precipitation in the case of 10mm, the occurrence area respectively 8000 Hm2,2000 hm2 and 3000 hm2. But in Heilongjiang Province, the annual precipitation trend of decline is not significant, the inter annual change in the larger, need analysis separately according to the amount of precipitation each year, so the annual precipitation of Heilongjiang Forestry Pest Occurrence Area of influence future trend is not clear.There was significant correlation with temperature and precipitation occurrence degree ofDendrolimus superans, overwintering period and period of February in August, the occurrence area of Dendrolimus superans and increases with the increasing temperature in February of August, and decreased with increasing temperature. The early winter precipitation in October and November of Larch caterpillar has a significant impact, with the increase of the precipitation, decline the occurrence area. Xingan larch CASEBEARER occurrence area and a significant correlation with temperature, overwintering period in December, February and April temperature increasing occurrence area aggravated. Xingan larch CASEBEARER occurrence area was negatively correlated with the occurrence period of September temperature, with the increase of temperature decrease occurrence area. The occurrence degree of Cryptorrhynchus lapathi is mainly affected by temperature and precipitation in June of August, the average temperature in August is lower occurrence period, its harm is more serious; the more serious the damage is more precipitation in June. Laspeyresia zebeana occurrence area by the average temperature in March and April winter period greatly affected significantly increases with the increase of temperature, the area of occurrence, the most significant influence to the average temperature in March. The increase of the precipitation over wintering period in November, December and January will lead to the occurrence of area reduction. Area of occurrence of Lymantria dispar increases with the increase of precipitation in March occurrence area. Rusticus occurrence area and the winter period in November, the average temperature in August and October occurred significant negative correlation, which in November and August reached extremely significant negative correlation. Precipitation occurred to xylotrechusrusticus area showed no significant correlation. Saperda populnea occurrence area mainly significant positive correlation with the precipitation occurrence period August temperature and overwintering period in March there. With the increase of the two climatic factors, occurrence area increase. The poplar clearwing moth occurrence area and overwintering period and period average temperature showed no significant correlation, the effect of temperature on the occurrence area was not obvious. The significant influence of the occurrence area of total precipitation in winter of March on the poplar clearwing moth, with the increase of precipitation in March, occurrence area rising. Malacosoma Neustria Testacea occurrence area in October, November by the overwintering period and average temperature of the occurrence period of July effect is obvious, and were associated with this 3 months reached the extremely significant negative correlation. Occurrence area and precipitation of Malacosoma Neustria Testacea has significant positive correlation with the occurrence area, in August last year precipitation increased and increased. Clostera anastomosis and the occurrence area and occurrence period average July temperature was negatively correlated with the temperature increasing, the July occurrence area decreased. Monthly fan monthly precipitation occurrence area and wintering period January boat moth showed significant positive correlation, the occurrence area with January precipitation increased and increased. Monthly fan increase boat moth occurrence area with monthly precipitation occurrence period August decreases. Yang Shanzhou, Yang Xiaozhou, Yang moth moth two tail boat moth, Liu Due, Apocheima cinerarius and other poplar leaf pests occurrence area and monthly average temperature correlation did not reach significant level. Other poplar leaf pests occurrence area increases with the increase of the occurrence period of precipitation in June.The majority of forestry pest occurrence area and overwintering temperature has significant positive correlation, and the correlation with the occurrence period of uncorrelated or negatively correlated to temperature. Forest leaf pests is mainly affected by the over wintering period of temperature is larger, the occurrence period of the temperature on the impact of smaller. The increase of temperature forest pest occurrence area of aggravated result in overall, but because of various insect life history and life habit difference may be different, exhibit an increased occurrence area with a January temperature and decreasing trend. In preparation for overwintering period temperature often has inhibitory effect on forestry pests. In its heavily harm period temperature has little influence on the damage.The majority of forest pests in favor of its occurrence in the overwintering period increases with the snow, snowfall occurring area increase. In the early winter rainfall is not conducive to the occurrence, causes the occurrence of area reduction. The majority of forest pests in showed no rainfall on has a significant effect on occurrence area.Climate change leads to the species and distribution of forest pests in Heilongjiang province area increase. |
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