CAJ | 학술논문

赤水河是我国生物多样性较丰富的地区之一，为了准确可靠地掌握赤水河中段清香木群落生物多样性信息。对赤水河流域中段沿着海拔（445～933 m ）高度选择典型清香木天然分布区设置7块20 m ×20 m样地，采用相邻格子法调查，进行物种优势地位、物种丰富度、物种多样性指数和群落均匀度分析。结果表明：1）灌木层中主要优势群落为清香木群落，其次是华西小石积群落，物种丰富度较小，即调查到共有56个物种，其中木本植物有42个，草本层仅有14个；2）灌木层中物种丰富度、物种多样性指数明显大于草本层；3）灌木层中Sirnpson指数平均为0．8270，Shannon‐Wiener指数平均为2．0548，均匀度平均为0．7939、0．8997，说明多样性指数偏低。
적수하시아국생물다양성교봉부적지구지일，위료준학가고지장악적수하중단청향목군락생물다양성신식。대적수하류역중단연착해발（445～933 m ）고도선택전형청향목천연분포구설치7괴20 m ×20 m양지，채용상린격자법조사，진행물충우세지위、물충봉부도、물충다양성지수화군락균균도분석。결과표명：1）관목층중주요우세군락위청향목군락，기차시화서소석적군락，물충봉부도교소，즉조사도공유56개물충，기중목본식물유42개，초본층부유14개；2）관목층중물충봉부도、물충다양성지수명현대우초본층；3）관목층중Sirnpson지수평균위0．8270，Shannon‐Wiener지수평균위2．0548，균균도평균위0．7939、0．8997，설명다양성지수편저。
Chishui River is rich of biodiversity in the region ,in order to accurately and reliably grasp the middle of the Chishui River community biodiversity information of Pistacia weinmanni f olia ,along the Chishui River in the domain of altitude (445~933 m) highly ,taking seven distribution typical of natural Pistacia weinman‐ni f olia plots of 20 m × 20 m ,using contiguous grid survey method ,the dominance of species ,species richness degree ,species diversity index and evenness were analyzed .The results showed that 1)The main advantage of the shrub layer was Pistacia weinmannifolia ,followed by the Osteomeles schwerinae ,species richness was small ,56 species were investigated including 42 woody plants and only 14 herbaceous layers .2)Shrub layer , species richness and species diversity index were significantly greater than the herbaceous layer ;3)Shrub layer Sirnpson average index was 0 .827 0 ,Shannon‐Wiener index was 2 .054 8 ,average evenness was 0 .793 9 , 0 .899 7 ,which indicated a low diversity index .