CAJ | 학술논문

2012年2月-2013年1月，利用热扩散技术和ECH2O系统对南京东善桥林场的杉木（ Cunninghamia lan-ceolata）树干液流速率及相关环境因子进行连续观测，研究分析了杉木液流速率的变化特征。结果显示：不同季节不同天气的杉木液流速率日变化表现出明显的昼夜变化规律，变化曲线表现为单峰曲线。夏季的液流速率最高，峰值为1?45～3?49 kg/h，其次是秋季（0?55～1?91 kg/h），春季的液流速率峰值为0?71～1?44 kg/h，冬季液流速率最低，峰值为0?30～0?85 kg/h。降雨雨量越大，雨后液流速率开始的时间越早，峰值越高，影响持续的时间越长。冬季，降雨开始后液流速率会迅速升高，雨后就会很快降低，而夏季，液流速率会在雨后的白天表现出明显升高，在次日之后会再次降低到原来水平。影响杉木液流速率的主导环境因子存在季节性差异，各相关性系数分别为：春季饱和水气压差（0?884），夏季空气相对湿度（-0?882），秋季饱和水气压差（0?798），冬季林外太阳辐射（0?621），土壤温度是影响杉木日均液流速率的重要环境因子。
2012년2월-2013년1월，이용열확산기술화ECH2O계통대남경동선교림장적삼목（ Cunninghamia lan-ceolata）수간액류속솔급상관배경인자진행련속관측，연구분석료삼목액류속솔적변화특정。결과현시：불동계절불동천기적삼목액류속솔일변화표현출명현적주야변화규률，변화곡선표현위단봉곡선。하계적액류속솔최고，봉치위1?45～3?49 kg/h，기차시추계（0?55～1?91 kg/h），춘계적액류속솔봉치위0?71～1?44 kg/h，동계액류속솔최저，봉치위0?30～0?85 kg/h。강우우량월대，우후액류속솔개시적시간월조，봉치월고，영향지속적시간월장。동계，강우개시후액류속솔회신속승고，우후취회흔쾌강저，이하계，액류속솔회재우후적백천표현출명현승고，재차일지후회재차강저도원래수평。영향삼목액류속솔적주도배경인자존재계절성차이，각상관성계수분별위：춘계포화수기압차（0?884），하계공기상대습도（-0?882），추계포화수기압차（0?798），동계림외태양복사（0?621），토양온도시영향삼목일균액류속솔적중요배경인자。
This study was designed to analyze the changing rules of the sap flow rate of Chinese fir( Cunninghamia lan-ceolata) based on the 12 months continuous located observation of the sap flow rate and environment factors by using sap flow meter and ECH2O system from February 2012 to January 2013 in Dongshanqiao Forest Farm of Nanjing. The results indicated that the sap flow rate of Chinese fir showed distinct diurnal changing rhythms both in sunny and cloudy days in different seasons. The change of the sap flow showed a single-peak curve. The crest values of the sap flow rate in spring, summer, autumn and winter were 0. 71-1. 44, 1. 45-3. 49, 0. 55-1. 91 and 0. 30-0. 85 kg/h, respectively. The crest value of summer was the highest, that of the winter was the lowest. The greater rainfall, the earlier the sap flow rate starting and the higher peak, the longer of impact. In winter, the sap flow rate increased rapidly when it rained, after the rain the sap flow rate would decrease soon. In summer, the sap flow rate would show obvious rise in the daytime after the rain, and in the later days it would decrease gradually to the original level. There existed seasonal differences for the main environmental factors that influenced the sap flow rate. The main environmental factors of spring, summer, autumn and winter were VPD(0.884), air relative humidity(-0.882), VPD(0.798) and solar radiation in field (0.621). Soil temperature was an important environmental factor that influenced the average daily sap flow rate of Chinese fir.