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作 者 ：付永能 崔景云 郭辉军 陈爱国

期 刊 ：云南植物研究 2001年 23卷 13期 页码：1-3

关键词：轮歇地；户级水平农业生物多样性评价；农户-物种曲线；经济价值评价；

Keywords:Household - based agrobiodiversity assessment (HH - ABA),

摘 要 ：通过随机抽样和农户推荐，对西双版纳大卡老寨11户农民的3年轮歇地采用典型取样法设立11个400m2(20×20m)的样方进行调查并结合现场社会经济状况调查。结果表明：从整个3年轮歇地来说，共记录156个物种，其中物种利用率达到42.9%。不同农户轮歇地植物物种丰富度和农业物种丰富度都存在较大的差异。这是因为轮歇前耕作年限及管理不同所致。不同农户轮歇地植物种类和结构的不同，导致不同农户之间植物群落相似性系数较小，最大仅为0.04，而差异性系数高达0.92，同时具有的经济价值各不相同。采用曲线S=a＋blnB作为农户数一物种数曲线的拟合模型初步确定热带地区3年轮歇地户级水平农业生物多样性的抽样比例为20%。

Abstract:Eleven sampling plots of 3y fallow field were investigated of eleven households of Daka, Xishuangbanna, Yunnan. The results show that there are great discrepancies of plant species richness among different households. Furthermore, hierarchical ag-glomerative graphics of 3y fallow field indicated that plant community similarities among different households are low. Meaning-while, according to the semi - structure interview of sampling households, the authors found that species economic value were dif-ferent from each household. Species - household curve that similar to area - species curve of 3y fallow field showes the minimum sampling percentage were 20 based on the fit and assessment of model curve S = a + blnB. A list of folk utilizable plants found in sampling plots is attached.

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