生物量

The results show that NPP is larger in June and July than other growth periods, grass LAI and NPP change rapidly from May to June. Estimated error of 44 cases by the biomass model is less than 20%, which show that the biomass model is very good , the model can describe growing status. Photosynthesis and respiration are different because of different type grass , three types grass are more adaptive to desert environment and the biomass are also big, the grass types include Alhagi sparsifolia, Lycium ruthenicum and Reaumuria songarica. The grass biomass is influenced by many factors such as grass type, total cover and plant height et al.

结果表明，2005年牧草生长期内NPP的变化基本是6、7月份最大，其它月份较小，5～6月份是牧草叶面积变化比较大的时期，也是NPP变化比较显著的时期；生物量模型估算得到的44个样本的生物量误差基本都小于20%，说明模型能够反映牧草的实际生长状况；不同荒漠牧草对光的利用能力和对CO2同化能力有很大差异，骆驼刺、红砂、黑果枸杞是荒漠牧草生物量较大的牧草类型；牧草类型、牧草盖度以及平均高度是造成不同牧草产量相差较大的重要原因。

Biomass of 10 plant species including Castanopsis fargesii,Pleioblastus amarus, Lindera strychnifolia,Vaccinium bracteatum,Ficus simplicissima(approximately account for 37%of total plant species in shrub layer) account for 84.15%of total biomass in shrub layer.Biomass of Woodwardia japonica and Blechnum orientale account for 93.3%of total biomass in herb layer.

在灌木层中，丝栗栲、苦竹、乌药、乌饭、三龙爪等10种灌木层植物(约占总灌木层种类的37％)占灌木层总生物量的84.1％；在草本层中，狗脊和乌毛蕨2种植物占草本层总生物量的93.3％，这说明林下灌木层和草本层植物的生物量主要集中在少数植物种类中。

Research on individual bamboo biomass and timber physical structure indicated that the allocation of Guadua amplexifolia biomass to branch is higher than moso-bamboo evidently. Root shoot ratio is larger than other sympodial bamboo, so it can be considered as a good breakwind plant because of developed root and branch. Every modularity biomass above ground had significant positive correlation with basal diameter and total height, it can simulated with allometric model. The culm had large relative wall thickness and low moisture content, so it can be cultivated as fine timber-used bamboo.

通过对Guadua amplexifolia现存单株生物量结构和竹材物理结构研究，结果表明：地上部分生物量在枝条上的分配比例高于相同径级毛竹，根冠比较其他丛生竹种大，具有发达的地下根系且易形成密集林分，是良好的防风植物材料；地上部分各器官生物量与地径、全高均呈显著的正相关，可以用相对生长模型进行模拟；竹秆有较大的相对壁厚和较低的含水率，可以作为良好的材用竹种进行培育。

The results showed that during the 45 days experimental time the fresh weigh of Myriophyllum spicatum L, Hydrilla verticillata L and Cerato-phyllum demersum L were 0.92 g, 0.27 g, 1.11 g and 0.56 g, 0.41 g, 0.87 g in medium nutritional condition TN 1.86 mgL^(-1; TP0.087 mgL^(-1) and eutrophic condition TN 2.47 mgL^(-1; TP0.16 mgL^(-1), respectively. The largest single plant biomass of Myrio-phyllum spicatum L and Ceratophyllum demersum L in in middle nutritional condition were over 39% and 22% higher than those in eutrophicated condition, but that of Hydrilla verticillata L was less than 51%, which shown that Myriophyllum spicatum L and Ceratophyllum demersum L grow better than Hydrilla verticillata L in middle nutritional condition.

研究结果表明，在45 d的培养过程中，狐尾藻、轮叶黑藻和金鱼藻在中营养TN1.86 mgL^(-1； TP0.087 mgL^(-1)和富营养TN2.47 mgL^(-1； TP0.16 mgL^(-1)水平下的单株最大生物量分别是0.92、0.27、1.11、0.56、0.41和0.87 g，狐尾藻和金鱼藻在中营养水平下单株最大生物量分别较富营养水平下高出39%和22%，而黑藻在中营养水平下单株最大生物量较富营养水平下低了51%，表明狐尾藻和金鱼藻在中营养水平下的生长较黑藻好。

Community structure and areal biomass showed significant changes in time and the maximal biomass was observed during March-April due to Sargassum spp. at Nanwan and Codium spp. at Tiaoshi.

大型海藻群聚及总单位面积生物量有明显的时间变化，在3-4月达最大量，单位面积生物量最大的南湾马尾藻及眺石松藻是总单位面积生物量时间变化的主因。

The maximal total areal biomass is not different between two years for Nanwan but significantly different for Tiaoshi mainly due to a marked biomass of Codium edule during 2000. Eutrophication on Nanwan and Tiaoshi reefs is the main cause for macroalgal blooming.

南湾最大总单位面积生物量在1999年与2000年间没有差异而眺石则有差异，食用松藻单位面积生物量是眺石最大总单位面积生物量年度差异主因。

The canopy interception will increase with the precipitation during at the beginning of rain, but it will keep stable later. The canopy interception quantity of six forest types is Mixed conifer forest, Pinus massoniana forest, Cupressus funebris forest, Conifer and broadleaf forest, Broadleaf forest and Shrubbery and grass land in order.There is much difference among the different species of the shrub and herbage.

林下灌草层不同的物种最大持水量有很大区别，在测定的物种中持水量最大的是糯米条，持水量最小的是柞木，糯米条的持水量接近柞木的3倍。6种森林类型林下灌草生物量从大到小依次是灌草地、马尾松林、针叶混交林、针阔混交林、阔叶林和柏木林；灌草层的持水量与其生物量具有密切关系，生物量多的持水量相应也多。

The composition, abundance and biomass of the dominant group had different characteristics in different months, the species of Lamellibranchia only had the dominant characteristics in some periods.

研究结果表明，生长季内海三棱藨草带大型底栖动物的多度和生物量整体呈上升趋势，但是月间存在一定波动变化，9月份多度最高，平均为1536ind／m^2，10月份生物量最高，平均为21.60g／m^2；不同月份优势类群组成、多度及生物量特征存在明显差异，瓣鳃类仅在部分时段表现出优势特征。

The results showed that Schima superba and Castanopsis carlesii were the dominant species in the community and constituted the main tree species with Lithocarpus glaber, Castanopsis fargesii and Castanea gracilis.

通过收获法直接测定了群落草本层和灌木层的生物量，并采用标准木法间接测定了乔木层生物量，同时分析了该群落及其主要组成树种的生物量特征。

On the sampling scale of 20 m, the road effects on different dominant populations were demonstrated in their spatial distribution patterns. There were significant increases in the biomass of Schima superba population, the number of individuals and biomass of Litsea rotundifolia population (P.05) along the parallel direction to road, respectively, while those of other populations had no significant difference.

优势物种20 m取样尺度的空间分布格局反映了不同种群对旅游路径干扰的不同响应，其中荷木的生物量、豺皮樟的个体数和生物量在远离旅游路径方向上均呈显著增长趋势，其他物种的个体数和生物量变化不显著。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。