河南省西峡老界岭自然保护区植被调查研究

1.西峡老界岭自然保护区位于亚热带向温暖带的过渡地区。该区已划成六个植被型。Ⅰ阔叶林、Ⅱ针叶林、Ⅲ针、阔叶混交林、Ⅳ竹林、Ⅴ灌丛和灌草丛、Ⅵ沼泽;十个植被亚型;二十八个群系和三十个群丛,地带性植被为含有常绿阔叶成份的落叶阔叶林。优势群落为锐齿槲栎林和栓皮栎林。 2.植被垂直带谱有五条: (1)低山丘岭灌丛、草甸和农作物带,<500m。 (2)含常绿阔叶成份的低山针、阔叶混交林带,400～900m。 (3)含常绿阔叶成份的中低山落叶阔叶林带,800～1.400m。 (4)中山落叶阔叶林带,1,300～1,800m。 (5)中高山针、阔叶混交林和山顶灌丛林,>1.750m。 3.该区植被强烈地受过人为活动的干扰,导致了植被的逆演替,也招致了生境条件的惭趋恶化,所以,植被合理利用的途径应根据森林的现状、演替、不同的生境条件、和各种树的生物学和生态学特性。

THE INVESTAGATION OF VEGETATION FOR THE NATURAL RESERVE OF LAOJIE RANGE OF XIXIA COUNTY IN HENAN

1. The natural reserve of Laojie Range of Xixia County is SItuated in the transitionat regon from the subtropical to thew arm temperate zone, There are 6 Vegetation types in this place, (a) Broad—leaf forest, (b) Needle—leaf forest, (c) Needle—leaf and Broad—leaf mixed forest, (d) Bamboo grove. Among them, there are 10 vegetation sub—types; and 30 associations. The zonal type is the deciduous broad—leaf forest involving evergreen broad—leaf species, and dominant ones are Quercus acutidentata Community and Quercus varabilis one. 2. 5 vertical zones of mountainous vegetation may be discerned in the reserve: (1) Bush—wood. meadow, and crop in the low and hilly land. <500m (2) The needle—leaf and broad—leaf mixed forest involving evergreen broad—leaf species in the low mountains. 400～900m (3) The deciduous broad—leaf forest invlolving evergreen broad—leaf species in the middle and low mountaius. 800～1400m (4) The deciduous broad—leaf forest in the middle mountains. 1300～1800m. (5) The needle—leaf and broad—leaf mixed forest and high mountain bush—wood in the middle and high mountains. >1750m. 3. This vegetation once was severely interrupted by human activities, resulting in the contrary succession of the vegetation, and bringing about the deterioration of the habitat conditions, therefore, the rational use of the vegetation should be based on the present situation, succession, different habitat conditions, and the biological and ecological characteristics of different plants.