摘要
2009年9月对中巴喀喇昆仑公路沿线分布的植物和植被进行了考察,经初步整理和统计,该地区共有野生维管束植物52科223属489种。其中,蕨类植物1科1属1种,裸子植物2科2属5种,被子植物49科220属483种。对222属488种种子植物的地理成分分析表明,该地区植物分布区类型有10个正型13个变型。其中,北温带分布有86属227种,占该地区植物总属、种数的45.75%和61.36%,表明温带属性是该地区植物区系的基本特点。同时,该地区植物区系与地中海-西亚-中亚及旧世界温带交流最多,其次与热带有一定的交流,而与温带亚洲和东亚交流很少。
China-Pakistan-Karakoram highway,which was built with the help of the Chinese government during the 60s of the 20th century,is an international highway linking Kashigar,a city in the western part of China,with Takot,a city in the northern part of Pakistan.Completed and opened to traffic at the end of the 70s,the highway cuts through the world-famous Karakorum Mountains,Himalaya Mountains and so on.Due to the frequent occurrences of natural disasters in the past 30 years,the highway was damaged and traffic condition has become worse.Therefore,the Chinese government made commitment again to help Pakistan to rebuild it.In September 2009,a survey of the plants and vegetation growing along the highway was conducted.According to our preliminary classification and statistics,there are 52 families,223 genera and 489 species of wild vascular plants,among which there is 1 family,1 genus and 1 species of fern,2 families,2 genera and 5 species of gymnosperm,49 families,220 genera and 483 species of angiosperm.The analysis on the geographical elements of the 222 genera and 488 species of seed plants shows that there are 10 normal types and 13 aberrations of plant distribution in the area,most of which are north temperate genera,including 86 genera and 227 species,making up 45.75% and 61.36% respectively of the total plant genera and species in the area.This indicates the temperate zone property to be the basic characteristic of the flora in the area.Meanwhile,most interflows between the flora in this area with that in the Mediterranean,Western Asian,Central Asian and the Old World temperate area,some interflows with the tropical flora,and few ones with the temperate Asian and Eastern Asian flora have been found.
出处
《干旱区研究》
CSCD
北大核心
2010年第4期545-549,共5页
Arid Zone Research
基金
交通运输部西部交通建设科技项目(200831822156)
中国路桥工程有限责任公司共同资助
