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Moreover, human activities play a more and more important role in the development of tidal flat. The concentrated coastal engineering change the dynamic environment of the tidal flat, and the exploitation of oil, natural gas and groundwater results in surface subsidence in the coastal area. In addition, sea level rise and the accompanied increase of storm surge frequency and intensity, will strengthen the erosional process, reduce the tidal flat area, coarsen the sediment, made the slope steep, and cause other environmental effects.
人类活动的环境效应对渤海潮滩发育的作用越来越明显,环渤海地区密集的海岸工程将改变原始的潮滩动力环境;石油、天然气、地下水的开采会导致海岸带发生地面沉降;海平面上升以及与其相伴随的风暴潮作用频率与强度的增加都将会使渤海潮滩的侵蚀过程加强、潮滩面积缩小、滩面物质粗化、坡度变陡,并产生一系列的相关的环境效应。
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The high porosity zone occurrence of the Tertiary reservoir composed of clastic rocks in the Yuanyanggou region is controlled by diageneses and sedimentary facies, lying in the early diagenetic stage A ~ the late diagenetic stage A1 and the area of the sandstones developing in debouch bar, braided-divided flow channel, raised bank and channel bar is namely high porosity zone development of the lower Shasan Member (Es33) and the upper-middle Shasan Member (Es31-2); furthermore, lying in the late diagenetic stage A2 and the area of the sandstones developing in debouch bar, braided-divided flow channel, raised bank and channel bar is namely high porosity zone comparative development of the lower Shasan Member (Es3) and the upper-middle Shasan Member (Es31-2), the physical property of the reservoir is relatively worse.
鸳鸯沟地区第三系碎屑岩储层高孔带分布受成岩作用和沉积相的控制,处于早成岩阶段A期~晚成岩阶段A_1期,且有河口坝、辫状分流河道、天然堤和心滩沉积微相砂体发育的区域即为该区沙三下亚段和沙三中上亚段储层高孔带的发育区;而处于晚成岩阶段A_2期,且沉积相也为河口坝、辫状分流河道、天然堤和心滩沉积微相砂体发育的区域即为鸳鸯沟地区沙三下亚段和沙三中上亚段储层高孔带的较发育区,储层物性相对较差。
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Most of the families crowded in the back and south area of the Changjiang River. The three provinces, Kiangsi、 Nanking and Zhejiang, located in the back area of the Changjiang River, are dense set. Kiangsi is the densest place. The two provinces, Fujian and Guangdong, located in the south of the Changjiang River, are vice-dense set.
长江下游流域及以南地区集中了绝大多数谱牒序跋所涉家族,其中长江下游流域的江西、南京、浙江三政区是分布的密集地,以江西为最密集,长江下游以南的福建、广东为分布的次密集地。
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In the past few years,the flax plant area enlarged constantly in order to adjust agriculture plant structure and improve agriculture economic efficiency in northern area of Heilongjiang province.To obtain high quality and high yield flax we have to take comprehensive agrotechnical measures.
近年来,为了调整黑龙江省北部地区农业种植结构,提高农业经济效益,北部地区的亚麻种植面积在不断扩大,要想获得亚麻优质、高产,必须采取综合农业技术措施。
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This paper analyzes the main problems of agricultural development in the southern area of Ningxia province, summarizes the 20-year experiences of the experimental zone in the area, and puts forward four different models of eco-agriculture, fruit-vegetable model, fruit-seedling model, grass-fruit-livestock.
针对宁夏南部退化山区农业发展中存在的主要问题,在总结试区多年工作经验的基础上,提出了适合于当地农村经济发展的4种生态农业模式,系统分析了各种生态农业模式的经济、社会和生态效益及其推广前景,为半干旱山区退耕还林还草和农业可持续发展提供科学依据与实践基础。
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The result indicated that (1) During 10 years, the number of unused land and grassplot was decreased, the other types of use land were increased;(2) The absolute index of land structure variation in Aksu area during 10 years was 8, among which the annual change of garden land and traffic land was great, the annual change of grassplot and unused land was small;(3) The relative change of introduced single type of land use indicated that there was significant regional difference in the change of land use in Aksu area.
结果表明:(1)在10年尺度上土地利用总体动态特征是未利用地和牧草地减少,其它土地利用类型增加;(2)10年间阿克苏地区土地结构变化绝对指数为8,其中:园地,交通用地的年变化率较大,牧草地、未利用地的年变化率较小;(3)引入的单一土地利用类型相对变化率,反映出阿克苏地区土地利用变化存在明显区域差异。
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In the summer of 1998 Sean Harry moved to the Gresham area. I remember getting together with Sean, Keith Watkins and some others as Sean shared his vision of starting new churches in the greater Portland area.
在1998年夏天,西恩·哈瑞搬到格瑞山姆区,当西恩分享他看见在较大的波特兰地区开始有一些新教堂的时候,我记得和西恩、凯丝·沃特肯还有其他人在一起。
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In the end it suggests some counter-measures, including: developing cage acquiculture in the bends and branches as the stradegy direction in cultivation program; developing high-density flowing aquiculture making use of the stream resources; selectively developing dam-intercepting bends acquiculture and quality pool fishery; intensifying the protection and utilization of the natural fish resources so as to develop special variety and establish fry production base; developing large-water-area throw-in and enrichment and culture fishery and halieutics; protecting ecological environment and establishing economic fish and rare fish protection district; perfecting fishery institution and intensifying fishery management and bettering the fish breeding; developing tourist and fishing industry; establishing related mechanism including government control mechanism, market guiding mechanism, management and running company system, sales market share system, farmer organizing and uniting system, leading enterprise leading system; increasing the investment to the fishery industry in the area
文章最后提出发展三峡水库渔业的对策包括:养殖项目的战略定向为利用库湾库汊,发展网箱养鱼;利用山溪流水资源,开展高密度流水养鱼;利用高水位区库湾,有选择地开展坝拦库湾养鱼和精养池塘渔业;强化天然鱼类资源保护与合理利用,进行特色品种的开发和苗种生产基地的建设;大水域放流增殖,发展捕捞业;保护生态环境,建立经济鱼类和珍稀鱼类保护区;健全渔政机构、加强渔政管理、做好鱼类繁殖;积极发展游钓业;建立与渔业发展相适应的配套机制包括政府调控机制、市场导向机制、管理运营公司制、营销市场股份制、农民组织协会制、龙头企业带动制;增加三峡水库渔业的资金投入。
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First, plant 400 mu of tea trees in Shuangdingzi Mountain 1 km to the north of Huleitang Spring and build a small size villa area in the foot of the mountain; build a big green land in the south of villa area with hippodrome and gymnasium inside.
一是在呼雷汤北1公里处的双顶子山种植400亩茶园,在山脚下依山而建一个小型别墅区;在别墅区以南兴建一处大型绿地,内设跑马场和体育馆等设施。
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Taking the fishery stocks status of no-overfishing in the coast of Guangdong in 1964~1965 as stock structure in good condition, according to the result of background survey of 16 artificial reefs area of Guangdong during 2002~2004, the historical change of stock structure of the coast of Guangdong had been studied, combined with some relative data, the species of enhancement for the artificial reefs area of Guangdong were put forward to choose: 38 species of fish, 13 species of shrimp, 4 species of lobster, 5 species of crab, 18 species of shellfish, 8 species of holothurian, 27 species of seaweed.
以1964~1965年广东沿海没有捕捞过度的渔业资源状况作为处于良好状态的资源结构,根据2002~2004年广东16个人工鱼礁区的渔业资源本底调查结果研究了广东沿海渔业资源结构的历史变动,结合有关资料,提出了广东人工鱼礁区可供选择的增殖放流种类为:鱼38种、虾13种、龙虾4种、蟹5种、贝18种、海参8种和海藻27种。
- 推荐网络例句
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For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether
年美国个人破产法的一个改动使得破产登记急速下降,而后引起了信用卡大规模的亏损。
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Eph. 4:23 And that you be renewed in the spirit of your mind
弗四23 而在你们心思的灵里得以更新
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Lao Qiu is the Chairman of China Qiuyang Translation Group and the head master of the Confucius School. He has committed himself to the research and promotion of the classics of China.
老秋先生为中国秋阳翻译集团的董事长和孔子商学院的院长,致力于国学的研究和推广。