CAJ | 학술논문

利用黑龙江省1981～2010年的土壤湿度数据,以富锦县、龙江县、双城县、黑河市、海伦县为代表点,分析了黑龙江省东、西、南、北、中各区域春季播种期间（4月28日）各土层土壤湿度的趋势变化和干湿变化,并采用Mann-Kendall法对土壤湿度变化趋势进行显著性和突变点检验。结果表明：0～30 cm土层各地土壤湿度在30 a间均有不同程度下降,北部的黑河市土壤湿度下降剧烈,西部龙江县、东部富锦县次之,并且龙江县干湿波动幅度大;Mann-Kendall检验结果：近30 a中,黑龙江省各地0～30 cm土层土壤湿度总体呈下降趋势,北部、西部和东部的黑河市、龙江县、富锦县土壤湿度下降趋势显著,并出现了突变区域,中部和南部的海伦县、双城县土壤湿度也存在下降,但下降不显著,近几年有达到下降显著的趋势。黑龙江省土壤湿度年际间的下降不仅与全球气候变暖背景下黑龙江省温度升高、地表温度变暖、生长季降水量总体减少趋势有关,还与土壤物理性质的恶化等因素密切相关。
이용흑룡강성1981～2010년적토양습도수거,이부금현、룡강현、쌍성현、흑하시、해륜현위대표점,분석료흑룡강성동、서、남、북、중각구역춘계파충기간（4월28일）각토층토양습도적추세변화화간습변화,병채용Mann-Kendall법대토양습도변화추세진행현저성화돌변점검험。결과표명：0～30 cm토층각지토양습도재30 a간균유불동정도하강,북부적흑하시토양습도하강극렬,서부룡강현、동부부금현차지,병차룡강현간습파동폭도대;Mann-Kendall검험결과：근30 a중,흑룡강성각지0～30 cm토층토양습도총체정하강추세,북부、서부화동부적흑하시、룡강현、부금현토양습도하강추세현저,병출현료돌변구역,중부화남부적해륜현、쌍성현토양습도야존재하강,단하강불현저,근궤년유체도하강현저적추세。흑룡강성토양습도년제간적하강불부여전구기후변난배경하흑룡강성온도승고、지표온도변난、생장계강수량총체감소추세유관,환여토양물이성질적악화등인소밀절상관。
By using the soil moisture data from 1981 to 2010,the trend of soil moisture in the east,the west,the south,the north and the middle region（the representative stations were Fujin,Longjiang,Shuangcheng,Heihe and Hailun,respectively） of Heilongjiang province during sowing period（on April 28） was analyzed.And the significance level and mutational site of soil moisture change were tested with Mann-Kendall method.The results show that the soil moisture from the depth of 0 cm to 30 cm presented downtrend in each region in the recent 30 years,and decreased most in Heihe,and secondly in Longjiang and Fujin,but no significant decreasing trend in Hailun and Shuangcheng county.The decrease of soil moisture was not only correlated to the deterioration of the soil physical properties,but also related to the increase of air and surface temperature and decrease of precipitation during crop growing period under the condition of global warming.