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双语推荐:漳江口

漳江口自然保护区土地利用图为基础,运用遥感系统和地理信息系统得到3个时期鸻形目鸟类的适宜生境分布图,选取一系列景观指数,运用Fragstats软件进行计算,分析约20 a(1992—2010年)漳江口自然保护区鸻形目鸟类生境的动态变化及驱动机制。结果表明:适宜生境分布面积呈下降趋势,次适宜生境和不适宜生境分布面积表现出一定的上涨趋势;适宜生境和次适宜景观破碎程度加剧,但后期有一定缓和;漳江口自然保护区鸻形目鸟类生境变化主要驱动力是人类活动干扰的增加。
With Zhangjiang Estuary land-use map, the plover birds’ suitable habitat map was developed by RS and GIS, a series of selected landscape indices were calculated by Fragstats, and the changes of Zhangjiang Estuary plover birds’ suitability habitat were analyzed.The range of birds’ suitable habitat is keeping decreasing.In contrast, the sub-suitable and unsuita-ble habitat areas increase.There is an increased fragmentation and then tended to stay stable on the later period.The dense human activities are the main reasons resulting in significant changes of Zhangjiang Estuary plover birds’ habitats.

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以裸露的光滩为对照,在福建漳江口红树林国家级自然保护区互花米草入侵地进行秋茄胚轴插植试验,探究互花米草入侵对秋茄幼苗更新的影响。结果表明:由于互花米草遮荫的影响,秋茄幼苗生长缓慢,茎杆纤细且叶片出现脱落现象,最终由于互花米草的倒伏覆盖使得秋茄幼苗完全失去光照而全部死亡。
The study was conducted in Zhangjiangkou Mangrove National Nature Reserve.Study sited with Kandelia candel hypocotyls were separately set in the places invaded by Spartina alterniflora with the control of places of bare tidal flat.The growth and survival of K.candel hypocotyls in the scopes of S.alterniflora communities were surveyed to evaluate the effects of the invasion on the regen-eration of K.candel seedlings.The results showed that K.candel seedlings poorly grew because of the Spartina alterniflora shading , stalks were slender and leaves abscised ,at last,because of the lodging of S.alterniflora,K.candel seedlings losed sunlight and died.

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采用气相色谱(GC -ECD )方法分析了漳江口水产品中六六六(HCHs )、滴滴涕(DDTs)的残留量,并对其残留水平、组成特征和人体健康风险进行了探讨与评价。结果表明:鱼类、虾类和贝类中HCHs残留量(以湿重计)分别为0.842 ng · g-1(未检出~1.42 ng·g-1)、0.374 ng·g-1(未检出~0.762 ng·g-1)、1.04 ng·g-1(未检出~1.59 ng· g-1);DDTs残留量分别为96.3 ng·g-1(3.40~432 ng·g-1)、6.79 ng·g-1(1.53~12.1 ng·g-1)、37.0 ng·g-1(9.02~78.0 ng·g-1)。水产品中DDTs残留量鱼类>贝类>虾类,且其残留量均高于HCHs的残留量。与其它地区相比,漳江口水产品中HCHs、DDTs含量属于中等水平。组成特征显示研究区域近期无HCHs污染源输入,但局部区域近期有新DDT的输入,可能与三氯杀螨醇的使用有关。所采集的水产品中HCHs、DDTs残留量尚低于我国食品安全国家标准—食品中农药再残留限量(GB2763-2014),亦低于日本、欧盟等发达国家和地区相关的最大残留限量,HCHs、DDTs通过膳食的暴露暂时不会对该地区的人体健康产生危害。
The residues of Hexachlorocyclohexanes (HCHs ) and Dichloro - diphenyl - tricgloroethanes (DDTs)in aquatic products from Zhangjiang River Estuary were detected by using GC-ECD. The residues levels,compositions of HCHs and DDTs,as well as the human health risk assessment were discussed. The results showed that,the residues of HCHs in fishes,shrimps and shellfishes ranged from undetected to 1.42 ng·g-1 with an average of 0.842 ng·g-1,undetected to 0.762 ng·g-1 with an average of 0.374 ng·g-1, undetected to 1.59 ng·g-1 with an average of 1.04 ng·g-1 ,in wet weight respectively;and the residues of DDTs ranged from 3.40 ng·g-1 to 432 ng·g-1 with an average of 96.3 ng·g-1 ,1.53 ng.g-1 to 12.1 ng· g-1 with an average of 6.79 ng·g-1 ,9.02 ng·g-1 to 78.0 ng·g-1 with an average of 37.0 ng·g-1 ,in wet weight respectively. The DDTs residuals were in the order of fishes>shellfishes>shrimps,which were higher than HCHs residuals in aquatic products. Compared to other areas,the

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以福建九龙江口地区为研究区域,利用2008年和2012年的国产环境一号(HJ-1)CCD数据,综合利用监督分类、非监督分类和知识规则相结合的方法对湿地进行分类和专题提取。结果表明:与2008年相比,2012年九龙江口湿地总面积有所减少。天然湿地中河流的面积减少,主要转为滩涂、红树林和其他。养殖场的面积增加最多,主要由农田、河流和其他转化而来;而农田的面积减少最多,主要转为养殖场、林地和其他。快速城市化对九龙江口的湿地影响很大。
The Jiulong river estuary wetlands in Fujian province were studied to classify wetlands and identification of specific categories by combining supervised classification, unsupervised classification and knowledge of the rules based on the remote sensing data of HJ-1 CCD acquired in 2008 and 2012. Results indicated a slight reduction of wetland area in 2012 compared to 2008. The reduction of river area in natural wetland was mainly caused by shifting to tidal zone, mangrove forest and others. The total area of aquatic farms increased most, mainly shifting from farmlands, rivers and others. However, the area of farmlands decreased most, mainly shifted to animal or fish farming land, forest land and others. Rapid urbanization has produced a great impact on Jiulong river estuary wetlands.

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介绍三江口水电站扩建工程"越河取水"建筑物,衔接竖井、过河埋管、汇合隧洞等的设计。三江口水电站扩建工程于2006年12月6日扩建第一台机组并网发电。至今电站运行已近8年,尤其经历2007年汛期的考验,目前整个取水建筑物运行正常,情况良好。
The paper introduces the design of the water intake structure across the river ,including the shaft connection ,the pipe embedding across the river and the joining to the tunnel .The first generating unit of the extension project of the Sanjiangkou hydropower plant was put into commercial operation and connect-ed to the power grid on December 6th ,2006 .It stood the test of floods in 2007 and has operated for nearly 8 years to date .The whole water intake structure has been under proper operation .

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通过采集太湖八房港和闾江口疏浚后与未疏浚沉积物柱状样于室内模拟"湖泛"的发生与消退过程来研究底泥疏浚对藻源性"湖泛"形成和消退的影响.结果发现,疏浚能有效的延缓"湖泛"发生的时间,八房港和闾江口疏浚后沉积物柱状样水体色度均要低于未疏浚对照样,水体泛黑的时间也分别比未疏浚对照样延迟6d和2d.疏浚沉积物对上覆水柱中营养盐的含量也有较好的控制,试验过程中八房港和闾江口疏浚后沉积物柱状样水体中NH4+-N的含量仅分别未疏浚对照组的40%和77.1%,PO43--P的含量也仅分别为未疏浚对照组的41.4%和78.1%.值得注意的是,疏浚沉积物所对应的水柱中Fe2+和S2-的含量均要高于未疏浚对照组.八房港和闾江口疏浚沉积物中亚铁的含量分别是未疏浚对照样的78.1%和76.4%,而闾江口疏浚后沉积物中酸挥发性硫化物(AVS)的含量则是未疏浚对照的1.36倍.沉积物中铁、AVS的含量没有表现出明显的垂向分布特征.
In order to estimate the effects of dredging on the prevention and control of black bloom, four intact sediment cores had been sampled from dredged and un-dredged areas of Bafang port and Lujiang port to simulation the occurrence and regression of algae-caused black bloom with Y-shape apparatus. Results showed that dredging has a good effect on prevention the degree of algae-caused black bloom. The color of water in dredged treatment group was lighter than the control, and the occurrence time of black bloom in dredged sites of Bafang port and Lujiang port was delayed 6days and 2days, respectively. The concentrations of NH4+-N, PO43--P in overlying water of dredged treatment group of Bafang port and Lujiang port were only 40%, 77.1%, 41.4%and 78.1%of control treatment, and the concentrations of Fe2+and S2-in overlying water of dredged treatment group were higher than control. The concentrations of Fe2+ in sediments of dredged sites of Bafang port and Lujiang port were 78.1%and 76.4%of c

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通过定床模型试验,比较温州七都大桥建桥前后瓯江口水位、流速、流向、汊道分流比等水动力因素的变化,对大桥建成后附近水域流态的变化及防洪、通航条件等的影响进行分析和预测.试验结果表明,大桥建成后对瓯江口的防洪排涝不会产生明显影响,不会改变七都南北汊道的性质,对港区航道影响较小.
Based on the fixed bed model test, we compare the changes of hydrodynamic factors of Oujiang estuary including the water level, flow, flow, branch channel’s diversion ratio before and after construction of Wenzhou-Qidu bridge, analyze and forecast the variation of flow pattern and near the bridge and the influence on flood control and navigation. The result shows that the construction of the bridge has no significant effect on flood control and drainage of Oujiang and will not change the nature of the seven North-South branch channels, and has little affect on the port channel.

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收集了近年来鳌江口附近海域多个工程不同阶段5个潮位站的3~5年潮位实测数据和部分海流实测资料,通过对鳌江口附近海域的不同年份的水位资料进行潮汐调和常数分析,鳌江近海海域主要为半日潮区,其中M2分潮的振幅在170 cm ~193 cm;迟角在260°~280°之间,这些站的2007年、2010年、2011年调和常数分析结果相比,主要的半日分潮M2、S2、N2,全日分潮K1、O1及浅水分潮M4、MS4、及M6等分潮振幅、迟角的最大变化分别在1.8 cm ~4.4 cm和3°~7°之间。在初步掌握了鳌江口潮汐潮流特征的基础上,采用无结构的三角形网格和有限体积法的FVCOM海洋数值模型,进行模拟结果验证,计算结果与实测数据符合良好。构建重点年份建设工程合拢产生新的岸线水深的潮汐潮流场,刻画鳌江口建设工程的叠加影响。
This paper have col ected the measured tides and certain tidal current data in different stages of many projects during past three to five years near the Aojiang River. The harmonic method is used to analyze tide and tidal current data observed at five stations in the sea adjacent to Aojiang River. The results show that the tide is mainly regular and semidiurnal in the sea near Aojiang of Wenzhou. The tidal amplitudes of M2 constituent are between 170 cm-193 cm and the lags are between 260°-280°. According to the comparison of analytical results of harmonic constants of these stations in 2007, 2010 and 2011, the maximum change of tidal amplitudes and phase-lag range for the main semidiurnal tides (M2, S2, N2), the diurnal tide (K1, O1) and the shal ow water tide (M4, MS4, M6) are 1.8 cm-4.4 cm and 3°-7°, respectively. After analyzing the tide and tidal current characteristics of Aojiang River, this paper uses an unstructured grid and Finite-Volume Coastal Ocean Model (FVC

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以罗城县江口水电站增效扩容改造项目为例,介绍农村小水电站机电设备选型着重考虑解决的几个问题。
Jiangkou Hydropower Station is located in Luocheng County. Taking its efficiency and capacity upgrade as example, an introduction was made on several factors in need of special attention during selection of mechanical and electrical equipment for rural small hydropower stations.

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采用瓯江口实测泥沙资料,对多个典型挟沙力公式进行了系统比较;对瓯江口同步的平均流速和平均含沙量进行分析,探讨适合该河口的挟沙力关系,并引入泥沙因子,考虑泥沙粒径对水流挟沙力的影响。结果认为:各挟沙力公式的计算结果过程曲线趋势一致,只是存在量级上的差别;结合实测泥沙资料进行分析,采用河口、海岸适用性较好的水流挟沙力公式,考虑泥沙粒径对挟沙力的影响,引入泥沙因子分析拟合瓯江口水流挟沙力公式。旨在揭示不同挟沙力公式之间的联系,以及河口海域水流挟沙力拟合过程,为进一步探讨河口海岸含沙量分布和悬浮泥沙输运提供思路。
Using the sediment data in the Oujiang Estuary, the formulas of sediment-carrying capacity were sys-tematically compared. According to simultaneously averaged velocity and averaged suspended sediment concentra-tion, and also considering the sediment factor, the sediment-carrying capacity in the Oujiang Estuary is discussed. It’s concluded that the results of each formula trend to consistency, and there’s only difference of value in practice. Applying the more reasonable sediment-carrying formula, and considering the grain size of sediment, the formula at the Oujiang Estuary was analyzed and fitted.

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