CAJ | 학술논문

提根据从国家气象信息中心实时资料数据库读取的自动土壤水分监测资料，计算出各个测站相应的土壤容重、田间持水量、凋萎湿度数据。在具体的业务实践中，参照土壤最大吸湿量数值，将6％作为土壤相对湿度的低值异常阈值；参照土壤饱和含水量数值，将190％作为土壤相对湿度的高值异常阈值；参照土壤水分日变化特点，初步将24 h 变化幅度0．1％作为10和20 cm 土层土壤相对湿度监测异常的变化阈值。具体分析代表站实测土壤相对湿度随时间的变化幅度，认为在土壤水分上升过程中的小时之间变化幅度应小于土壤饱和含水量（％）与前一监测数据的差值；土壤相对湿度＞100％时的下降幅度应小于土壤饱和含水量（％）减去95％；土壤相对湿度≤100％时的下降幅度应小于5％。
제근거종국가기상신식중심실시자료수거고독취적자동토양수분감측자료，계산출각개측참상응적토양용중、전간지수량、조위습도수거。재구체적업무실천중，삼조토양최대흡습량수치，장6％작위토양상대습도적저치이상역치；삼조토양포화함수량수치，장190％작위토양상대습도적고치이상역치；삼조토양수분일변화특점，초보장24 h 변화폭도0．1％작위10화20 cm 토층토양상대습도감측이상적변화역치。구체분석대표참실측토양상대습도수시간적변화폭도，인위재토양수분상승과정중적소시지간변화폭도응소우토양포화함수량（％）여전일감측수거적차치；토양상대습도＞100％시적하강폭도응소우토양포화함수량（％）감거95％；토양상대습도≤100％시적하강폭도응소우5％。
According to the automatic soil moisture monitoring data read from the database of National Me-teorological Information Centre (NMIC),the soil bulk density,field capacity and wilting moisture of each station are calculated.In the operational practice,according to the soil maximum hygroscopicity,the low-est threshold of the relative soil moisture is set to be 6%.According to the saturated soil moisture,the top threshold of the relative soil moisture is set to be 190%.According to the diurnal variation characteristics of the soil moisture,the diurnal variation amplitude of the relative soil moisture of 10 cm and 20 cm soil layer is set to 0.1%.The variation range of relative soil moisture with time of representative stations is an-alyzed.The results show that in the increasing stage of soil moisture,the variation amplitude between hours should be less than the difference of the saturated soil moisture (%)with the previous monitoring data.When the relative soil moisture is larger than 100%,the decline range should be less than the satu-rated soil moisture (%)minus 95%.And when the relative soil moisture is less than 100%,the decline range should be less than 5%.