摘要
为提高我国大面积人工的科学经营水平,本文以尚志林管局一面坡林场3种主要人工林(杨树、红松和落叶松)不同生长阶段的固定样地调查数据为例,采用目前常用的林分空间结构参数定量分析各林分的基本空间结构特征,为人工林的健康经营提供基础。研究结果表明:各林型不同生长阶段的林分平均混交度均属典型零度或轻微弱度混交;林分的平均大小比值均接近0.50左右,整体处于中庸状态;林分的平均角尺度则均为典型的均匀分布或轻微聚集分布;林分整体空间结构则显示各林型的空间结构极不合理。为此,必须采取积极的森林经营措施以提高当前森林生态系统结构和功能稳定性。
In order to improve China＇s large area of artificial scientific management level,the particle takes fixed sample survey data in different stages of growth for the three major plantations（ poplar,pine and larch） in forest authority of Yimianpo as an example and employs the currently used quantitative parameters stand spatial structure of the basic features of the spatial structure for each stand to provide the basis for a healthy plantations. The results show that： the different growth stages of forest types are typical stand with mingling average zero degrees faint or light mixed; the average size ratio stands are close to about 0- 50. Taken the doctrine of the state as a whole,the average angle stand scales are typical of the uniform or slightly aggregated distribution; stand overall spatial structure is displayed for each type of forest spatial structure is extremely unreasonable. Therefore,we must take positive steps to improve the current forest management structure and function of the stability of forest ecosystems.
出处
《林业科技情报》
2015年第1期6-9,13,共5页
Forestry Science and Technology Information
关键词
人工林
林分空间结构
一面坡林场
plantation
stand spatial structure
Yimianpo forest farm
