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The Study Of Kasghar District Climate Change And Its Impact On The Agriculture

Posted on:2014-06-29Degree:MasterType:Thesis
Country:ChinaCandidate:Y X M G L A B L T AFull Text:PDF
GTID:2250330422458169Subject:Physical geography
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The climate is very important part of the natural environment, and It is a kind ofimportant natural resources, in different aspects, play a role in all of the society andeconomy, Especially,its extremely significan effects on agricultural production.Global climate change has a profound influence on human life and production,aroused Attention to climate change. The KaShi city is one of the most sensitiveresponse to climate change and ecological fragile region. The regional background ofclimate change, the Kashi city climate factors also had some significant changes.This paper selects Kashi city as the research object, based on the Kashimeteorological station From1981to2010meteorological data And from2000to2010agricultural data. Used Climate tendency rate、Trend line analysis、Movingaverage method、Method of test for Mann-Kendall、The Yamamoto method、Movingt test method,for the Kashi city’s temperature, precipitation, sunshine hours andsand-dust days were analyzed in detail, discussed The climate characteristics ofKashi City, as well as the impact on agricultural production. The main results of thispaper shows that:(1)The temperature of Kashi city in the decade change, interannual variation,seasonal changes are showing a rising trend. The average diurnal slightly rising trend,But the trend was not obvious. The temperature change of seasons are on the rise,among the maxsimum Rate in autumn and Winter is minimum. But the DiuranalTemperature Range In addition to the winter, The other showed a declining tendency.From the mutation test knows that, the Mutations happened about during1996-1997years.(2) The annual precipitation showed an upward trend, the annual total rainfallreached71.4mm. Precipitation in1980s and1990s, are less than long-time averageannual value, after entering the21Century, the upward trends is very avious. Fromthe seasonal precipitation tendency rate perspective, precipitation in autumn(6.37mm/10a) was more that the precipitatin of winter and spring, the change ofsummer rainfall is decline trend. The precipitation of Kashi City mutation occur that2001-2002years.(3) Sunshine hours are upward trend, the trend rate is166.5h\/10a. Sunshinehours mainly concentrated in the1980s and1990’s mid-term. The four season’ssunshine hours showed an upward trend, The most obvious increasing trend in spring,followed by autumn, the least is in summer and winter. Mutations occur during 1996-1997years.(4) The sand dust weather in Kashi city showed a decreasing trend. Excep theblowing sand days increased, Kashi City floating dust days, dust storm days and galedays tended to decrease trend. Four seasons of sand dust weather days generallydeclining trend, but the summer blowing sand days are upward trend, which affectedof Kashi city’s blowing sand frecuecy. Years of blowing sand days, for every10years increase0.6d.(5) Agriculture is the climate change one of the most sensitive sectors of climatechange. Whether it is crop farming, animal husbandry, fishery, fruit industry andsideline agricultural sector are affected by climate change. Kashi city is crop farmingand fruit industry as the leading industry, the two department of agriculture in theclimate conditions of the stability as the premise. Therefore, study on the change ofthe climate factors in the city and a deep understanding of the changing rules ofclimate factors, it has important practical significance to the sustainable developmentof Kashi city agriculture departments.Through analyzing the change of main climate factors in Kashi City, Kashi City,that due to temperatures are rising, increased precipitation, sunshine hours increased,the number of sand-dust days and reduce, will bring some influence to the city ofKashi rice, wheat, corn, fruit and other agricultural products,Is an attempt to researchon climate change in Kashi City, with system and certain innovation; Also in KashiCity, timely adjustment of the various production and living activities reference,especially it plays an instructive role in the region’s agricultural production.
Keywords/Search Tags:Xinjiang Kashi city, climate change, agricultural production, mutationanalysis, impact study
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