Histological observation of somatic embryogenesis from cultured embryos of quercus variabilis bi 栓皮櫟體細(xì)胞胚胎發(fā)生的細(xì)胞組織學(xué)觀察
Forestland evapotranspiration and water balance of pinus tabulaefor - mis and quercus variabilis mixed stand 油松栓皮櫟混交林林地蒸散和水量平衡研究
The study showed that the quercus variabilis communities in different habitats significantly differentiated in their trait parameters 研究表明:不同生境的栓皮櫟種群性狀參數(shù)分化差異明顯。
Time series model can simulate and predict the increase of quercus variabilis population by the difference , periodic method 摘要時間序列分析可以通過差分、周期的方法,對植物種群的增長進(jìn)行模擬與預(yù)測。
From april to october of 2001 , a 31 - year - old pinus tabulaeformis and quercus variabilis mixed stand was studied on forestland evapotranspiration and water balance in western mountainous area of beijing 摘要2001年4 - 10月,對北京西山地區(qū)一塊31年生的油松、栓皮櫟混交林的林地蒸散和水量平衡進(jìn)行了研究。
Quercus variabilis (Chinese Cork Oak) is a species of oak in the section Quercus sect. Cerris, native to a wide area of eastern Asia in China, Japan, and Korea.