| 1. | The species diversity index of the tree layer was a bit low , and the general trend was shrub layer > treelayer > herb layer
乔木层物种多样性指数偏低,垂直结构各层次间物种多样性大小依次为灌木层>乔木层>草本层。 |
| 2. | The t - test result shows that the species diversity index , evenness index and consume biomass are no significant differences between 12 years fore - and aft
T检验结果表明，多样性指数、均匀性指数的消费生物量， 12年前后的差异不显著( p 0 。 01 ) 。 |
| 3. | Number of species and individuals , species diversity index and evenness , and proportion of wader birds decreased from bay - mouth to bay - head , and was lowest in midbay
其中湾口的水鸟物种数、个体数量、多样性指数、均匀度指数以及涉禽所占比例均为最高，湾底次之，湾中部最低。 |
| 4. | Growth indices of artificial cultivated hedysarummaxim . are studied by line transect methods , species diversity indices are calculated to study the sand - fixing effects of hedysarummaxim
摘要采用样线法对人工种植羊柴进行研究，调查其生长状况，并通过研究其物种多样性来分析羊柴对流沙的固定效果。 |
| 5. | ( 2 ) in general , in comparison with continuous evergreen broadleaved forest , these fragmentation forest have smaller species diversity index , and different life forms have different represents
( 2 )在与连续森林的比较上，总的来说，这几个片断森林的物种多样性指数均较连续森林低，不同的生活型表现不一样。 |
| 6. | Acoording to the comparison among bird species in five different habitats in jinzhongshan , the results indicate that the highest bird species diversity index is in scrub and farmland ( 3 . 04 ) , and the lowest in water area ( 2 . 14 )
本文还对金钟山鸟类保护区的5种不同生境类型的鸟类种类组成作了比较，结果表明灌丛农田的鸟种多样性指数最高，为3 . 04 ；水域的鸟种多样性指数最低，为2 . 14 。 |
| 7. | The chinese fir plantations cultured by rmc method not only have the ideal vertical structure and habitat diversity but have their species diversity indexes beyond the lower limit of that of evergreen broad - leaved forsets in jiangxi province
以残留管理育林法所培育的林分,不仅其物种多样性指数已超过江西常绿阔叶林物种多样性指数的下限,而且还具备良好的垂直结构及较高的生境多样性。 |
| 8. | The relationship between the vertical structure in the secondary succession community of the evergreen broad leaved forests on the jinyun mountains in chongqing and species diversity in them was estimated and analyzed based on their vertical structure and species diversity index
从垂直结构和物种多样性指数，测度分析了重庆市缙云山常绿阔叶林群落次生演替序列垂直结构与物种多样性的关系。 |
| 9. | The main results are as following : 1 species diversity indices are significantly different among communities in desert - oasis ecotone , but are low in general ; diversity indices based on important value and cover are more properly in arid desert areas
主要结论如下： 1 、阜康荒漠绿洲过渡带物种多样性在群落间差异显著，总体上多样性水平较低；对荒漠植被，以重要值或盖度为指标计测多样性指数较为可行。 |
| 10. | The results were following : ( l ) generally , all four indices showed the similar variation patterns in species diversity ; ( 2 ) generally speaking , the order of species diversity indices changed with the pattern : shrub layer tree layer herb layers ; ( 3 ) the species diversity of evergreen broadleaved forests was larger than that of warm conifer forests ; ( 4 ) the species diversity of forests in meizi lake area has been affected by human factors
结果表明： ( 1 )梅子湖森林植被样地物种多样性测度的结果，上述4种指标总体上表现出相同的变化趋势。门）总体看来， 14个样地的物种多样性指数在群落不同层次的变化规律为：灌木层乔木层草本层。 （ 3 ）不同植被类型的物种多样性特征是：常绿阔叶林暖性针叶林。 |
