生物量

Watercontents, biomass and so on of Phyllostachys pubescen, Bambusa rigida and Bambusagibba were researched in order to provide scientific data for the bamboos extendingand producting.

本文研究了毛竹、硬头黄竹、坭竹三个竹种的含水率、生物量等指标，旨在为三个竹种的推广和生产实践提供科学依据。

Bambusa wenchouensis ; Biomass ; Structure ; Model ; DBH

大木竹；生物量；结构；模型；胸径

The effects of different management patterns on root system structure and biomass of Bambusa oldhami was studied. The results are as follows: for the extensively managed Bambusa oldhami stand, the dry weight, length, surface area and volume of roots were 317.61 kghm^(-2), 45 304.91 mhm^(-2), 98.65 m^2hm^(-2), and 0.0181 m^3hm^(-2) respectively.

对不同经营方式的绿竹林根系结构和生物量分布开展了研究，结果表明：在粗放经营的绿竹林内，竹根干质量总量为317.61 kghm^(-2)，竹根长度总量为45304.91 mhm^(-2)，竹根表面积总量为98.65平方公尺hm^(-2)，竹根体积总量为0.0181立方公尺hm^(-2)；在集约经营的绿竹林内，竹根干质量总量为1333.12 kghm^(-2)，竹根长度总量为143338.46 mhm^(-2)，竹根表面积总量为3089.15平方公尺hm^(-2)，竹根体积总量为0.5831立方公尺hm^(-2)。

The seedlings of 4 dominant tree species of tropical seasonal rain forest, such as Pometia tomentosa, Barringtonia macrostachya, Myristica yunnanensis and Knema globularia, were transplanted at three altitudinal sites (low 600 m in Menglun; middle 1 100 m in Caiyanghe; high 1 600 m in Mengsong) in Xishuangbanna. The parameters of photosynthesis and biomass of these seedlings were measured. The results showed that the low temperature at high altitude caused dormancy or photosynthetic system destroy.

在云南西双版纳勐仑(600 m，低海拔)、菜阳河(1 100 m，中海拔)和勐宋(1 600 m，高海拔)，对热带季节雨林4种主要树种绒毛番龙眼、云南玉蕊、云南肉豆蔻和小叶红光树幼苗进行移栽试验，测定幼苗的光合作用和生物量。

In this paper, the benthic distribution of biomass and biodensity, composition of species and community structure are studied in coastal waters of Zhejiang Province.

本文对浙江省近岸海域底栖生物的种类组成，生物量及栖息密度的分布和群落结构进行了叙述和讨论。

Factors of plant bion,aiss and hydraulic retention time that affected the sewage treattnent effect were studied mainly.

方法采用无土栽培的石龙芮、酸模处理生活废水，重点研究影响污水处理效果的植物生物量、水力停留时间的两个因素。

Its distribution in this area was relatively extensive, the appearing frequency from 5 to 12m was very high and there was certain biomass. The length of young Branchiostoma belcheri from June to August was 1.3mm-7.8mm. From August, it metamorphosed and shifted to the bottom life.

该水域的文昌鱼幼体分布面较广，从5m到12m深面上均有很高的出现频率和一定的生物量。6-8日间文昌鱼幼体体长为1.3mm-7.8mm，进入8月份后，幼体变态转入底栖潜沙生活。

Based on the data obtained from 24 stations in autumn 2000 and spring 2001, the secondary production of macrobenthos in the southern Yellow Sea was calculated with Brey's (1990) empirical formula. The results showed that the mean abundance in autumn (2000) was 154.2 ind.

根据2000年秋季和2001年春季在南黄海24个大面站进行的大型底栖生物定量采集样品资料，利用Brey's(1990)的经验公式对调查海区进行了大型底栖生物栖息密度、生物量、次级生产力和P／B值的研究计算。

Based on the data obtained in 2001 ～ 2003 from 33 stations, the secondary production of macrobenthos from the anchovy spawning ground in the southern Yellow Sea was studied using Brey's (1990) empirical formula. The results showed that the mean abundance was 194.3 ind.

根据2001至2003年南黄海鳀鱼产卵期在鳀鱼产卵场33个站考察采集的大型底栖生物定量样品资料，利用Brey's(1990)的经验公式对调查海区进行了大型底栖生物栖息密度、生物量、次级生产力和P/B值的研究计算。

Brey's (1990) empirical formula was used to calculate the secondary production and P/B ratio of macrobenthos according to macrobenthos biomass and abundance obtained in Shenhu Bay. The results showed that the mean annual secondary production and P/B ratio were 0.599g/(m^2a) and 1.561 respectively.

根据各个季节获得的大型底栖动物栖息丰度和生物量，采用Brey (1990)的经验公式进行了大型底栖动物次级生产力和P/B值的计算，得出深沪湾潮下带大型底栖动物年平均次级生产力和P/B值分别为0.599g/和1.561。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。