能源植物黄连木在我国的地理分布规律

为了更好地开发利用生物柴油能源植物黄连木（Pistacia chinensis Bunge）,对其在我国的地理分布规律进行了系统调查研究,结果表明：黄连木的地理分布范围为北纬18°09′～40°09′、东经96°52′～123°14′,资源遍布我国华北、华南、西南、华中、华东与西北地区的25个省、自治区、直辖市;分布区地形以高原、山地为主,土壤母岩以石灰岩为主,土壤类型以褐土为主,跨越我国温带、亚热带、热带地区;黄连木的水平分布区主要位于云南潞西—西藏察隅—四川甘孜—青海循化—甘肃天水—陕西富县—山西阳城—河北顺平—北京西山一线以东、以南,整体上呈现连续分布的特征,局部地区有一定的间断分布;从我国西部到东部,其垂直分布的上限与下限均呈现逐渐降低的趋势,从南方到北方,这种降低趋势不太明显;黄连木在我国的资源分布区可以划分为集中分布区、次集中分布区、零星分布区和沿海地带零星分布区四种类型。

Geographical distribution of energy plant Pistacia chinensis Bunge in China

For better exploitation and utilization of Pistacia chinensis Bunge as a kind of energy plant for biodiesel,this study systematically investigated its geographical distribution regularity in China.The results show that the geographical distribution of P. chinensis spans from 18°09′N to 40°09′N in latitude and from 96°52′E to 123°14′E in longitude.It is often found in the regions of North China,South China,Southwest China,Central China,East China,and Northwest China including 25 provinces（municipalities or autonomous regions）.It grows usually in plateaus and mountains in temperate,sub-tropical,and tropical regions.Throughout the distribution region of P.chinensis,the soil parent rock is mainly limestone and the soil is drab soil.The horizontal distribution region of P.chinensis is mainly located in the east and south to the following line of Luxi,Yunnan-Zayu,Tibet-Garze,Sichuan-Xunhua, Qinghai-Tianshui,Gansu-Fuxian,Shaanxi-Yangcheng,Shanxi-Shunping,Hebei-Xishan,Beijing in a pattern of continuous distribution as a whole with partial disconnection.The top and bottom limits of its vertical distribution appear a trend of gradual fall from west to east,while the trend is not so obvious from south to north.In summary,the resource distribution region of P.chinensis in China can be categorized into four types,namely,concentrated distribution region,secondary concentrated distribution region,scattered distribution region,and seaboard scattered distribution region.