CAJ | 학술논문

以2003-2012年山西省64个墒情站土壤墒情观测资料为基础，在ArcGIS环境下通过IDW插值法分析了土壤含水量的空间变化规律，以及土壤含水量的年际和季节变化规律，探讨了降水和气温对土壤含水量变化的影响。结果表明，山西省土壤含水量东南部整体偏高，北部和南部整体偏低。10、20和40 cm土层水平空间变化规律与整体一致，纵向空间各层变幅由上到下依次变小。近10年年际变化趋势减少且不显著。从季节变化角度来看，土壤水3月份开始减少，到6月份增加，增加到10月份再减。降水是影响全省土壤含水量时空变化的主导因素，气温的影响不大。降水的多寡决定土壤含水量的高低。
이2003-2012년산서성64개상정참토양상정관측자료위기출，재ArcGIS배경하통과IDW삽치법분석료토양함수량적공간변화규률，이급토양함수량적년제화계절변화규률，탐토료강수화기온대토양함수량변화적영향。결과표명，산서성토양함수량동남부정체편고，북부화남부정체편저。10、20화40 cm토층수평공간변화규률여정체일치，종향공간각층변폭유상도하의차변소。근10년년제변화추세감소차불현저。종계절변화각도래간，토양수3월빈개시감소，도6월빈증가，증가도10월빈재감。강수시영향전성토양함수량시공변화적주도인소，기온적영향불대。강수적다과결정토양함수량적고저。
Temporal and spatial variations of soil moisture in Shanxi Province are analyzed by using In-verse Distance Weighted (IDW)method with ArcGIS software package,based on soil moisture and pre-cipitation data from 64 monitoring stations during 2003 -2012..The annual and seasonal variations in soil moisture are obtained,and influences of precipitation and temperature changes on soil moisture are investigated using correlation analysis technique.The results indicate that soil moisture is high in the southeast Shanxi,and low in the north and south parts of the Shanxi province.All soil moistures at 10, 20 and 40 cm soil depth show similar variation feature to spatial patterns,but with a less variability in soil moisture at lower soil layer.Moreover,soil moisture tends to increase from the upper to the lower soil profile.There are no clear interdecadal change but obvious seasonal change in soil moisture,decreasing from March,becoming increase in June,and then decreasing again from October.Precipitation plays a key role in spatiotemporal variations of moisture and influences of temperature on soil moisture are moder-ate .