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采用“标准地+样方”法,对克拉玛依农业综合开发区防护林林下植物群落进行调查,统计并计算林下植物的丰富度、物种多样性及均匀度。结果表明:(1)研究区防护林林下植物共有33种,主要以农田杂草为主;(2)研究区防护林林下植物物种多样性以紫穗槐林为最高,沙棘、沙枣林和柽柳林次之,杨树林和榆树林最小;(3)高郁闭度的乔木防护林对林下植物的生长有较强的抑制作用,林下植物多样性低,中等郁闭度的乔木防护林林下植物多样性最高,而灌木防护林林下植物多样性和均匀性都比较高,多样性在不同郁闭度下差异不大。文中旨在了解干旱区不同防护林林下植物群落的现状,为该地区防护林建设和经营提供科学依据。
The “Under standard + quadrat” method was used to investigate the undergrowth plant community in the shelterbelt of the agricultural development zone in Karamay. The richness, species diversity and evenness of undergrowth plants were calculated and calculated. The results showed as follows: (1) There were 33 undergrowths in the shelterbelts in the study area, mainly based on farmland weeds; (2) Species diversity of understory plants in the shelterbelt in the study area was highest in Amorpha fruticosa, Tamarix followed the poplar and the elm forests the smallest; (3) tall canopy density of the shelterbelt has a strong inhibitory effect on the growth of understory plants, understory plant diversity is low, moderate canopy density of the trees shelterbelts The plant diversity is the highest, while the species diversity and evenness of understory plants in shrub-protected forests are comparatively high. The diversity is not much different under different canopy degrees. The purpose of this paper is to understand the status quo of undergrowth plant communities in different shelterbelts in arid area and to provide a scientific basis for the construction and management of shelterbelt in this area.