林芝地区珍稀濒危藏药材卷叶黄精资源特征研究

卷叶黄精是百合科黄精属多年生濒危藏药材草本植物。本研究采用标准样地法对林芝地区（墨脱县外）11个地点的卷叶黄精资源进行实地调查，结果表明：（1）不同地点卷叶黄精全株平均生物量的排序为，工布江达金达＞朗县洞嘎＞波密古玉＞波密扎木＞朗县金东＞察隅南山＞米林扎贡＞林芝通麦＞波密巴卡＞波密岗乡＞波密中坝，其中地下部分生物量与全株生物量的相关性紧密。（2）卷叶黄精生物量总体上随海拔升高呈先增后减再增的趋势，即呈双峰型，但地上部分与地下部分的比值随海拔升高呈现出无规则型变化。（3）林芝地区各县卷叶黄精蕴藏量的排序是，工布江达县＞朗县＞米林县＞波密县＞察隅县＞林芝县，蕴藏量最多的工布江达县为633.154 t，占总量的55.834％，最少的林芝县为42.859 t，仅占总量的3.779％。（4）林芝地区卷叶黄精资源具有分布广泛但不均匀的特点。

The Resource Characteristics of Polygonatum cirrhifolium as a Rare and Endangered Tibetan Medicine in Linzhi District

Polygonatum cirrhifolium is a perennial herbaceous plant which belongs to Ploygonatum of Liliaceae, and is regarded as a rare and endangered Tibetan medicine .Based on the standard sampling method , research and analysis on Polygonatum cirrhifolium of the 11 plots （ except Motuo Couny ） in Linzhi District were conducted , and the result indicated that：1） The mean biomass of P.cirrhifolium varied in different spots：Jinda of Gongbujiangda County〉Dongga of Lang County 〉Guyu of Bimi County〉Zamu of Bomi County〉Jindong of Lang County 〉Nansan of Chayu County 〉Zagong of Milin County 〉Tongmai of Linzhi County 〉Baka of Bomi County 〉Gangxiang of Bomi County〉Zhongba of Bomi County .2 ） The biomass of the underground part was closely correlated with that of the complete stools , and in general , the biomass of P.cirrhifolium intends to increase firstly and then decrease and increase again with the elevation increasing , namely bimodal patter .While the ratio between underground part and over ground part showed an irregular change with the elevation increasing . 3 ） The resources reserves of P.cirrhifolium in different counties ranked as Gongbujiangda county 〉Lang County 〉Milin County 〉Bomi County 〉Chayu County〉Linzhi County .The highest yeild was 633.154 t in Gongbujiangda County , accounting for 55.834%of the total, and the lowest was 42.859 t in Linzhi County , accounting for 3.779 %.4） The P.cirrhifolium was characterized by wide but uneven distribution in Linzhi District of Tibetan Autonomous Region .