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[地质][环境相关][中英对照]GEF项目四川本底情况(送中央项目办)(6)

一线实稿 樊明璨 来源:樊明璨博客 625浏览 0评论

gef-1

六、植被
VI. Vegetation

四川省植物种类占全国30%以上,是全国植物资源最丰富省区之一,有森林、灌丛、草原、草甸、竹林、沼泽等植被。森林覆盖率34.4%,森林主要集中在盆地常绿阔叶林地带和川西高山峡谷亚高山针叶林地带,川西北高原以高山灌丛、草甸为主。
The plant species in Sichuan take up more than 30% of the nationwide plant species. As one of the provinces with the most abundant plant resources, Sichuan accommodates such vegetation as forest, shrub, grassland, meadow, bamboo forest and swamp. The forest coverage hits 34.4%; the forests are mainly concentrated in the evergreen broad-leaved forest zone and western alpine gorge and subalpine coniferous forest zone; in Northwestern Sichuan Plateau are mainly alpine shrub and meadow.

1、四川省岩溶地区地形复杂,气候多样,孕育了十分丰富的生物资源和植被类型。据不完全统计,有高等植物270余科,1700多属,近万种,其中乔木约1000种;形成了亚热带常绿阔叶林、亚热带落叶阔叶林、常绿落叶阔叶混交林、竹林、灌木林和灌草丛。主要乔木树种有马尾松、云南松、柏木、栎类等;灌木树种有紫穗槐、盐肤木、马桑、小铁仔等;主要经济树种有核桃、板栗、油桐、柑橘、柚等;竹类有慈竹、楠竹、杂交竹等。值得关注的是,碳酸盐岩分布区对植物有严格的选择性,植被具有喜钙、旱生、石生的特点,生长缓慢,适生树种少,群落结构简单,群落的自调控力弱,当受到外界因素尤其是人为活动因素的干扰时,极易导致群落逆向演替。
1. The karst region in Sichuan nurtures abundant living resources and vegetation thanks to its complex landforms and diverse climate. According to incomplete statistics, there are nearly ten thousand higher plants species under over 1700 genera within more than 270 families, among which there are about 1000 arbor species. They form the subtropical deciduous broad-leaved forest, evergreen deciduous broad-leaved forest, bamboo forest, shrub and shrub-grassland. The arbor species mainly includes masson pine, Yunnan pine, cypress and oak; the shrub species includes shrubby flase indigo, Chinese sumac, Coriaria sinica and Myrsine africana; the staple economic tree species includes walnut, chestnut, tung tree, tangerine and pummelo; the bamboo species includes Omei Mountain Bamboo, Moso Bamboo and hybrid bamboo. It is worth noting that the carbonate rock distribution region is strictly picky about plants and prefers calciphilous, xeric and saxicolous plants growing slowly. Few tree species are suitable for living here. For the simple community structure and weak self-regulating ability here, the interferences caused by external factors, especially by man-made activity factors, may easily lead to retrogressive succession of communities.

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