- 更多网络例句与物种多样性相关的网络例句 [注:此内容来源于网络,仅供参考]
-
Avian ; Avifauna ; Group diversity ; Species diversity ; Three Gorges Reservoir
鸟类;区系;类群多样性;物种多样性;三峡库区
-
On the basis of systematic analysis and review of the current researches, an forest restoration evaluation indicator system on scale of forest type had been developed, in which seven indexes were selected including the species richness, stand volume, species diversity, conspicuousness, coverage, degree of closeness and height of forest communities. The index weight value were calculated by the analytic hierarchy process.
在系统分析和整合了现有研究成果的基础上,初步构建了包括物种丰富度、林分蓄积量、物种多样性、显著度、盖度、郁闭度及群落高度7个指标的林型尺度森林植被恢复评价指标体系,采用层次分析法计算出指标权重。
-
Subalpine coniferous forest ; Restoration ; Species diversity ; Soil factor
亚高山针叶林;恢复;物种多样性;土壤因子
-
The results showed that:(1) soil densi-ties of urban roadside and park forests were higher than mean density of natural forest soil.
本研究是广州城市植被的土壤、物种多样性、行道树和生态功能的综合调查。
-
This study was carried out in collective-owned summer grassland in Ganchaitan, which is located at the south foot of eastern Lenglongling Mountain (a branch of north Qilian Mountain), with yak and Tibetan sheep miscellaneously grazed on it. The grassland type could be classified as alpine meadow, dominated by Potentilla froticosa shrub. This study, under grads grazing stress, focused on the community structure, composition, species diversity, above-ground biomass of PFS, by using pane net sampling based on spatial distribution in stead of temporal succession. Results showed that: Grazing stress negatively related to the distance between grazing area and resident area.
以祁连山北支冷龙岭东段南麓的甘柴滩夏季牧场集体长期混合放牧的高寒金露梅Potentilla froticosa灌丛草场为对象,利用空间分布代替时间演替的方法,采用方格网法取样分析调查,对不同放牧压力梯度下金露梅灌丛群落的结构、组成、物种多样性、地上生物量进行研究,结果表明:①放牧居住点由远到近,放牧压力梯度不断增加,金露梅株高、密度、覆盖度、地上生物量和丛间草地的地上生物量均有不同程度的降低,地上的总生物量降低幅度达84.77%。
-
Species diversity ; avian species richness ; mammalian species richness ; zoogeography ; nature reserve
物种多样性;鸟类物种丰富度;兽类物种丰富度;动物地理;自然保护区
-
Planktonic amphipoda, species diversity, China Seas
中文关键字:浮游端足类,物种多样性,中国海
-
Galliformes, birds, species diversity, endemic species, conservation, China
中文关键字:鸡形目,鸟类,物种多样性,特有种,保护,中国
-
The comparative study on vegetation background survey of the stationsand the comparison on level of phytocoenology on zonal habitats indicates thatthe diminishment of the numbers of families,genus and species,compositionof life types,diversity of communities and habitats,;and the increscence in theproportion of photosynthesis functional groups of C3/C4 plant,richness ofspecies,density of tussock and tiller,diversity of species,evenness,leaf areaindex,leaf area duration,dry matter production of communities alongside thelatitude increasing and the temperature decreasing;and the dynamic curve ofthe community productivity also tend to steadily increase along with thetemperature going up and the heat accumulation gradually in moderate-temperate steppe station from violent fluctuation along with seasonal badly-distribution of precipitation in warm-temperature steppe station;manifestingthat transformable tendency of productivity pattern of the community from morevigorous net assimilation,sparser and higher crops stricture of tussock and tiller,and possession on more resources by less species inclined to thicker in densityof crops,superior effectiveness of multi-leaves and pattern of multi-speciesresource sharing,reflecting that bigger disparity of the vegetationcharacteristics and the style of the community growth in the two differentthermal-type steppe stations owing to background of natural-historicenvironment and combination of water and heat.
内蒙古草原区两个不同热量型研究站点植被本底调查和显域地境群落学水平的比较研究表明:随纬度增加和气温降低,植物科、属、种的数目,生活型组成,群落类型和生境类型的多样性均趋于减少,而C3/C4光合功能群比值和群落的物种丰富度,株丛密度,物种多样性,群落均匀度,叶面积指数,叶面积持续时间和群落干物质生产能力均趋于增加,群落生产力动态曲线从随天然降水的季节分布不均而剧烈波动趋向于随气温逐渐升高和热量逐步积累而稳定增长,显示出两站点植物群落从较为旺盛的群体净同化作用、较为稀疏高大的群体结构和少数物种占有较多群落资源的生产力格局向较高的群体密度、优良的多叶性能和多物种资源共享的群落生产力格局转变,反映出在内蒙古草原区不同的自然历史环境背景和不同的温度条件及其水热组合状况影响下,两个不同热量型草原站点植被性质的分异特征和显域地境群落生长模式的较大差别。
-
Orchidaceae ; geographical zone ; species diversity ; Fujian Province
兰科植物;地理分区;物种多样性;福建省
- 更多网络解释与物种多样性相关的网络解释 [注:此内容来源于网络,仅供参考]
-
biological diversity, biodiversity:生物多样性
02.0146 系统收藏 systematic collection | 02.0147 生物多样性 biological diversity, biodiversity | 02.0148 物种多样性 species diversity
-
Shameless:令人羞愧的
17.diversity of species 物种多样性 | 18.shameless 令人羞愧的 | 19.barbaric 野蛮的
-
vegetation reforger:植被再造
物种多样性:forest vegetation | 植被再造:vegetation reforger | 植被水:vegetation water content
-
understorey vegetation:林下植被
植被变化:Vegetation change | 林下植被:understorey vegetation | 物种多样性:forest vegetation