Observation on Some Activities of Reproduction in Little Egrets (Egretta garzetta) at Jiyu Island in Xiamen

于 2 0 0 1年 3～ 7月采用颜色标记法 ,记录厦门白鹭保护区内鸡屿岛白鹭 (Egrettagarzetta)卵产出和孵出的顺序和时间 ,并称重卵和雏鸟。有 91 4 %的窝卵数为 4～ 5枚 ,产卵期 7 0± 1 9d ,出壳期 4 2± 1 4d ;卵孵化时间与产卵顺序显著负相关 ;不同产出顺序卵重无差异 ;不同孵出顺序雏鸟早期 (≤ 5d)发育无差异 ,之后差异显著 ,第 4出壳的雏鸟发育水平和成活率较低 ,而第 5出壳的雏鸟最低 ;亲鸟在产卵期的孵化是非连续的 ,而产卵结束后相对连续。如此 ,可以调节孵化时间 ,进而调控异步孵化的程度 ,使雏鸟在生长阶段形成适当的等级差别 ,以获得最大的繁殖收益。Data on breeding of Little egrets (Egretta garzetta) were collected in a period from March to July of 2001 at Jiyu Island in Xiamen Egret Natural Reserve.Eggs and nestlings were marked with colors for identifying the egg-laying and hatchling sequences.Ninety one percent of clutch sizes were 4 and 5,the laying period was 7.0±1.9?d,and hatching spread was 4.2±1.4?d;the incubation time was negatively correlated with the laid order of eggs;the mass was not different for the eggs laid early or late;at early stage of development (≤5?d),nestlings were not different in growth,but a significant difference appeared after then,the rate of growth and survival was the lowest for the 5th hatchling,and the second for the 4th when counting backwards.Incubation was not continuous in laying period,and became relatively continuous after that period.By this way,the parents may regulate the incubation time,and further adjust the asynchronism of incubation,resulting in a dominance hierarchy among the nestlings,which would maximize the reproductive success.福建省自然科学基金资助项目 (D9910 0 0 3 );; 厦门市环境保护科研所资助项

轻质保温隔墙板的制备及性能研究

建筑节能理念已受到普遍关注,轻质保温隔墙板作为一种节能材料且多功能化而成为研究开发的热点.由发泡聚苯乙烯(EPS)颗粒保温砂浆制备而成的芯材是轻质保温隔墙板的重要组成部分,对隔墙板性能起决定性作用.现有的保温隔墙板虽质轻,但强度较弱.为获得密度低、抗压强以及粘结性好的EPS保温砂浆芯材,以干表观密度对导热系数和抗压强度的影响为引导,研究了粉煤灰、发泡剂、甲基纤维素醚等对芯材抗压强度及粘结性能的作用规律;对芯材的压缩应力-应变曲线进行了分析,并讨论了增韧原因;初步试生产制得了综合性能良好的轻质保温隔墙板

Population dynamics and nesting of three species of egret on Xiamen Dayu Island

对厦门大屿岛白鹭保护区的夜鹭（nyCTICOrAXnyCTICOrAX）、白鹭（EEgrTAgArzETA）和池鹭（ArdEOlAbACHuS）进行种群动态和营巢观察研究。3种鸟的数量季节变化都很大，5~7月数量高峰期，每月总数都达5000只左右。5月底共5610只，3种鸟的比例分别为50.8%、32.0%和17.2%。4月开始大量在相思树梢上营巢，5月中至6月初巢数多达6000多个。结果表明，3种鸟都是厦门的繁殖鸟和留鸟This paper deals with the population dynamics and nesting of Nycticorax nycticorax, Egretta garzetta and Ardeola bacchus in the Egret Naturel Reserve on Xiamen Dayu Island.The number of three egret species vary greatly with the season.May, June and July is the peak seasons.When the total birds reach about 5000 in each month.Especially, 5610 birds are sighted in May,and three species account for 50.8%, 32.0% and 17.2%, respectively.In April, most egrets begin to nest on the branchs of Acacia confusa, and nests come to 6000 during middle May and the beginning of June.The results show that the three species of egret are all resident and breeding birds of the Island

Expression and Localization of Nucleophosmin During HMBA-induced Differentiation in Human Hepatocarcinoma SMMC-7721 Cells

To explore the existence and distribution of nucleophosmin in the nuclear matrix and its co-localization with the other related gene products following HMBA treatment in the human hepatocarcinoma SMMC-7721 cells,the nuclear matrix of SMMC-7721 cells was extracted pre/post HMBA induced differentiation.2D PAGE proteomics analyses showed that nucleophosmin existed in the fractions of nuclear matrix proteins and was down-regulated after HMBA treatment with further confirmation by Western blot analysis.The immunofluorescence observation revealed that nucleophosmin located in the nuclear matrix,HMBA treatment altered its expression level and distribution profile.The co-localization of nucleophosmin with cancer-related genes and the products of oncogenes or tumor repression genes,including c-fos,c-myc,p53 and Rb,using laser scanning confocal microscopy,were evaluated,and substantial differences were observed following HMBA treatment.The results implies that nucleophosmin,as a nuclear matrix protein,the level of its expression and the colocalization with cancer-related gene products may play an important role during the differentiation of SMMC-7721 cell.国家自然科学基金资助项目(No.30470877)~

300kg/a规模流化床制碳纳米管中试研究

采用Ni-Mg-O复合氧化物催化剂进行了流化床甲烷催化裂解法制碳纳米管的中试实验,研究了主要操作变量对甲烷转化率、催化剂产碳率、产品团聚率及催化剂损失率的影响,得到了适宜的操作条件为:甲烷进气流速16～19 cm/s、催化剂粒径150～220μm、催化剂加入量50～60 g、反应温度650～700℃、反应时间120～140 min。多批次重复性实验表明,在选定的操作条件下,甲烷转化率约为30%,催化剂产碳率约为10 gCNTs/gCAT。对纯化后的产品进行SEM及TEM形貌表征显示,制得的碳纳米管管径均匀,中空结构明显,碳纳米管的外径为10～30 nm,内径为2～5 nm。中国海洋石油总公司科技项目(CNOOC-KJ125FZDXM00TJY001-2014

Plant ecology of the outer coast of the Minjiang River Estuary in Fujian

记录了福建闽江口 2 6 6种海岸高等植物 ,其中草本占 70 .2 %、灌木占 2 1 .4%、藤本和乔木占 8.4% .喜盐种在河口的内侧、中区和外侧占总数的百分比分别为5.7% ,6 .8%和 1 1 .8% .二叶红薯、南方碱蓬和番杏是盐碱土的指示种 .在内侧近淡水区有繁茂的咸水草、芦苇和芦竹Two hundred and sixty six species coastal vascular plants distributed along the Minjiang River Estuary in Fujian are recorded. Among them,herb accounts for 70.2%, frutex accounts for 21.4%, vine and arbor account for 8.4%.Salt loving species distributed along the inner, middle and outer estuary account for 5.7%, 6.8% and 11.8% ,respectively. Ipomoea pes-caprae,Suaeda australis,Tetragonia tetragonoides are saline alkali indictor. Near fresh waters in the inner estuary there are rankness of Cyperus malaccensis var. brevifolius,Arundo donax and Phragmites communis

The Spatial Distribution of Breeding Ardeidae in Dayu Island, Xiamen Egret Natural Reserve

采用样方法 ,根据生态学原理 ,分析厦门白鹭自然保护区大屿岛鹭类繁殖的空间分布规律 .结果表明 :鹭类在大屿岛繁殖时 ,具有明显的水平分布特征 .夜鹭 (N ycticorax nycticorax)主要分布于核心区中部偏南的中央大片区域 ;白鹭 (Egretta garzetta)各处都能分布 ;池鹭 (Aroleola bacchus)仅分布于核心区的南北 ;牛背鹭 (Bubulcus ibis)和黄嘴白鹭 (Egretta eulophotes)只分布在核心区中部偏北的局部区域 ,和白鹭、夜鹭共栖一处 .鹭类在大屿岛上的繁殖也具明显的垂直分布现象 .夜鹭巢位最高 ,白鹭、牛背鹭和黄嘴白鹭的巢居中 ,而且三者巢位相近 ;在白鹭和池鹭营巢在同一树上的情况下 ,池鹭的巢处于上层 .对鹭类集群繁殖时的空间分布现象的产生原因也进行了探讨With sampling method and ecological theory, the spatial distribution of Ardeidae in Dayu Island, Xiamen Egret Natural Reserve were investigated and discussed. The results show that there is a horizontal distribution in colonial breeding Ardeidae. Nycticerax nycticorax mainly distribute on southern region in the center of the core area; Egretta garzetta breed in all regions of the core area; Ardeola bacchus only locate their nests on both northern and southern sides of the core area; Bubulcus ibis and Egretta eulophotes place their nests on the North of the core area, sharing the place with Egretta garzetta and Aroleola bacchus . During breeding period, the vertical distributions also appear. Nycticorax nycticorax locate their nests on the tiptop of the forest; the nests of Egretta garzetta, Bubulcus ibis and Egretta eulophotes are in the middle. When Egretta garzetta and Aroleola bacchus nest on the same tree, the latter usually nest in higher place.福建省自然科学基金资助项目 (D9910 0 0 3

The Breeding of Dark Morph Egretta garzetta and the Development of Its Nestlings

2003年6月在厦门大兔屿鹭类营巢地首次发现暗色型白鹭,对其形态、繁殖以及子代雏鸟进行研究.暗色型白鹭在厦门的数量稀少,其羽色为暗灰色,但在头、喉、胸或腹部上存在着不同程度的白羽差异.暗色型白鹭与白色型白鹭结对繁殖,共同完成孵卵和育雏过程.暗色型白鹭巢位高度为520cm,较同一树上其他4个白鹭的巢位(428±62)cm高,巢高21.2cm,巢深10.8cm,巢内径38.0cm,巢外径60.2cm;卵呈鸭蛋青色,卵的长径为3.33cm,短径4.52cm,质量23g;窝雏数为4只;1日龄雏鸟平均体长(10.8±0.2)cm,平均体质量(21±0.5)g,子代雏鸟的羽色为白色,喙表现为乌黑发亮,皮肤颜色也较白色型黑.暗色型白鹭亲鸟和雏鸟的繁殖及生长发育等其它生物学特性与白色型白鹭基本相同.本文对国内暗色型白鹭的来源及其羽毛颜色的遗传特性进行分析探讨.In the June of 2003,a dark morph of Egretta garzetta was found in the heronry at Datu islet,Xiamen. Dark morph Egretta garzetta was very rare in Xiamen.The color of its plumage is dark-grey with an individually different white patch on the head,throat breast or belly.The dark morph Egretta garzetta paired with a white morph Egretta garzetta and they incubated eggs and cared for nestlings together.The height of its nest to earth was 520 cm that was higher than other white morph Egretta garzetta that nested on the same tree (428±62) cm.The height,depth,inner-diameter and exo-diameter of its nest were (21.2) cm,10.8 cm,38.0 cm and 60.2 cm respectively.The long-diameter,short-diameter,and weight of its blue egg was 4.52 cm,3.33 cm,and 23 g respectively.The body length and weight of 4 nestlings in one-day age was (0.8±0.2) cm and (21±0.5) g.The nestlings had the white plumage with a jet-black bill and darker skin than white morph.The growths of the nestlings were similar to those of white morph.The source of the dark egret in China and the genetic feature of its plumage morph were discussed in this paper.福建省自然科学基金(D9910003);; 厦门白鹭自然保护区管理处基金资

The Breeding Behaviour and Reproductive Capacity of the Little Egret

2 0 0 1年 3月至 7月对厦门白鹭自然保护区鸡屿岛的白鹭 (Egrettagarzetta)繁殖行为和繁殖力进行了研究 .白鹭集群、择巢、筑巢于 2月中旬至 3月中旬 ,3月底部分亲鸟开始产卵和孵化 ,4月中旬雏鸟开始出壳 .白鹭窝卵数为 4.43± 0 .6 8(SD)枚 ,孵化期为 2 3.2± 1.4d ,孵化率为 88.5 0 % ,窝雏数为 3.8± 0 .8只 ,育雏期 2 8～ 35d ,雏鸟成活率为 87.7% .每年每只白鹭的繁殖力为 1.96只雏鸟 ,每巢成功繁殖 3.37只雏鸟 .鸡屿岛白鹭繁殖前期的种群数量为 5 0 32只 ,繁殖结束时亲鸟和成活雏鸟数量共 135 0 6只 .本文分析影响白鹭繁殖的主要因素 ,并提出白鹭繁殖期的管理和保护措施From March to July in 2001, research on the breeding behaviour and reproductive capacity of the little egret, Egretta garzetta were made in the Jiyu islet in Xiamen Egret Natural Reserve. The little egrets began to group, select nest locality and build nest from mid-February to mid-March. And then they started to lay egg and incubate. In the mid-April the nestlings were hatched. The mean clutch size in little egret was 4.43±0.68 (SD), incubation period 23.2±1.4 d, incubation rate 88.50%, mean number of the nestlings was 3.8±0.8, nursing period around 28～35 d, and the survival rate of nestlings was 87.7%. The reproductive capacity of one little egret was 1.96 per year, and the survived nestlings for one nest was 3.37. The population size of little egret in the Jiyu islet was 5 032 in the early period of the breeding, and increased to 13 506 for the parents and survived juvenile at the end of the breeding. The main factors affected the breeding were analyzed, and some suggestion for the management and protection on little egret was made in this paper.福建省自然科学基金 (D9910 0 0 3)资助项