摘要
为了探索雨凇危害后对林分树木生长、林下灌木生长的影响,采用选择标准地的方式对受雨凇危害的林分进行调查。结果表明,不同树种对雨凇灾害的抵抗力不同,由轻到重依次为柞树、椴树、落叶松、白桦、油松。抚育后,雨凇危害的柞树林分、椴树林分、落叶松林分、白桦林分内的林木平均胸径和蓄积量都有明显增长。从2013年调查结果看,以对照为100%,柞树林分、椴树林分、白桦林分、落叶松林分胸径分别为108%、117%、111%、113%;林木蓄积量分别为111%、146%、104%、121%;只有油松林分因为受灾太重,导致林木平均胸径、蓄积量下降;抚育措施对雨凇危害林分内幼苗幼树、林下灌木的生长有促进作用。
In order to explore the effect of glaze harm on the stand forest and understory shrub growth,a sample-plot survey was conducted.The results showed that the resistance of different tree species to glaze disaster is different in a sequence of Quercus mongolica,Tiliaspp.,Larix principis-rupprechtii,Betula platyphylla and Pinus tabulaeformis from light to heavy.Through tending the stand forest of oak,tilia,larch,and birch harmed by glaze,there was a significant increase in average DBH（108%,117%,111%,113%）and tree volume（111%,146%,104%,121%）,respectively except for the pine stand which was the most heavely affected by glaze,resulting in a decrease of its average DBH and tree volume.It is concluded that tending against glaze harm to stand is supposed to promote the growth of the seedlings and understory shrub.
出处
《河北林果研究》
2014年第2期133-137,共5页
Hebei Journal of Forestry and Orchard Research
