论文部分内容阅读
通过2010—2011年两年的连续观测,研究了帽儿山地区10种典型灌木生长期内含水率的动态变化及其影响因子,并建立了灌木含水率预测模型.结果表明:10种灌木生长期内的最低含水率都高于100%.在展叶期后到落叶期之前,大部分灌木含水率都超过200%.其中,瘤枝卫矛、珍珠梅和接骨木在整个生长期内不易燃;暴马丁香、东北山梅花、乌苏里绣线菊、金银忍冬、长白忍冬、栓翅卫矛和小叶鼠李在萌芽期和落叶期内可燃,在展叶期到落叶前期不易燃.土壤含水率和日最高气温对多数(7种)灌木的含水率有影响,林冠干旱指数则对部分(5种)灌木含水率有影响.所建立的线性预测模型中,9个模型可以解释超过35%的含水率变差.模型的平均绝对误差(MAE)和平均相对误差(MRE)分别为35.9%和13.4%.
The dynamic changes of water content in ten typical shrubs in Maoershan area and its influencing factors were studied through continuous observation in 2010-2011, and the prediction model of shrub moisture content was established.The results showed that: The minimum water cut during the growing season was higher than 100%, and most of the shrubs had a water cut of more than 200% after the leaf-opening period until the deciduous period. Among them, Non-flammable; sturgeon, northeastern mountain plum, Wusuli meadowsweet, honeysuckle honeysuckle, Changbai honeysuckle, pick-wing eagle and leaf loach Lee in the germination and deciduous period flammable, in the leaf stage to the early deciduous is not easy The soil water content and daily maximum air temperature affected the moisture content of most (7 species) shrubs, while the canopy drought index affected the moisture content of some (5 species) shrubs.In the linear prediction model established, 9 models could Explain the variation of moisture content of more than 35% .The mean absolute error (MAE) and average relative error (MRE) of the model are 35.9% and 13.4% respectively.