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胶新铁路是“十五”期间国家铁路建设重点项目,是世界上第一条里程最长的绿色环保铁路。胶新线北起胶济铁路上的胶州站,南至陇海铁路的新沂站,是国家规划的东北至长江三角洲地区路海通道的重要组成部分,是我国沿海地区一条新的南北运输干线。全线纵跨5市、10个县(市、区)、43个 相似文献
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从国家统计局获悉，据初步核算，2003年长三角地区15城市实现地区生产总值22775亿元，比2002年增加了3650亿元。占全国的比重进一步提升，由上年的18．7％上升至19．5％。15个城市经济增长速度最高18．0％，最低11．8％，分别高于全国平均水平8．9和2．7个百分点。长三角已成为拉动全国经济增长的重要贡献地区。 相似文献
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海门山羊原产地位于气候湿润、农业发达、草料丰富的长江三角洲地区,产区属亚热带季风气候,年平均气温为15～16℃,年降水量为1200-1400mm,相对温度为80％,无霜期220～240d。产区为高度发达的农业区,有大量农副产品和水陆野生植物,为养羊提供了丰富的饲料。 相似文献
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长江三角洲地区城市污泥中苯并[a]芘和菲的初步研究 总被引：1，自引：0，他引：1
SHEN Rong-Yan LUO Yong-Ming FENG Sheng ZHANG Gang-Y WU Long-Hu LI Zhen-Gao TENG Ying P. CHRISTIE 《土壤圈》2009,19(4):523-531
To evaluate the contaminated conditions of benzo[a]pyrene (B[a]P) and phenanthrene (PA) in sludge and to ascertain whether B[a]P limit for land application of sludge exists, the contents of B[a]P and PA in 46 sludge samples from 15 cities in the Yangtze River Delta area of China were determined using high performance liquid chromatography (HPLC) coupled with a fluorescence detector after ultrasonic extraction and silica gel cleanup. B[a]P contents ranged from non-detectable to 1.693 mg kg-1 dry weight (DW), averaged 0.402 mg kg-1 DW, and were < 1.0 mg kg-1 DW in most of the sludge samples. PA was found in all the sludge samples analyzed; its contents ranged between 0.028 and 1.355 mg kg-1 DW, with an average value of 0.298 mg kg-1 DW. Most of the sludge samples contained < 0.5 mg kg-1 DW PA. All 46 municipal sludge samples analyzed in this study showed B[a]P contents < 3.0 mg kg-1 DW, which is the limit value for sludge applied to agricultural lands in China. The contents and distributions of B[a]P and PA in municipal sludge were related to sludge types, sources and treatment technologies, along with the physical and chemical properties of these pollutants. 相似文献
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<正>泰州市地处江苏省中部,是长江三角洲地区工业发达、商贸繁荣的中心城市之一,2005年国内生产总值达590亿元,所辖泰兴、靖江、兴化、姜堰四个县级市全部进入全国综合实力百强县(市)。本地区气候温和,年平均气温14-15℃,土壤肥沃,四季分明,地势平坦,适宜发展蚕桑生产。但由于种种原因,泰州的蚕桑生产发展步伐较慢,生产规模总体偏小。2005年全市有投产桑园面积1 395公顷,年产 相似文献
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长江三角洲地区污泥中多环芳烃的污染研究 总被引：4，自引：0，他引：4
To ascertain the contaminated conditions of polycyclic aromatic hydrocarbons （PAHs） in sludge and to evaluate the risk of application of this sludge for agricultural purposes, 44 sludge samples obtained from 15 cities in the Yangtze River Delta area of China were investigated using capillary gas chromatography/mass spectrometry （GC/MS） after ultrasonic extraction and silica gel cleanup. PAHs＇ contents ranged from 0.0167 to 15.4860 mg kg^-1 （dry weight, DW） and averaged 1.376 mg kg^-1, with most samples containing 〈 1.5 mg kg^-1. Pyrene （PY）, fluoranthene （FL）, benzo[b]fluoranthene （BbF）, indeno[1,2,3-cd]pyrene （IND）, benzo[a]pyrene （B[a]P）, and benzo[g,h,i]perylene （BghiP） were the most dominant compounds, ranging from 0.1582 to 0.2518 mg kg^-1. Single PAH, such as naphthalene （NAP, 2-benzene rings）, phenanthrene （PA, 3-benzene rings）, PY （4-benzene rings）, and FL （3-benzene rings）, had high detection rates （76.1%-93.5%）. The distribution patterns of PAHs were found to vary with the sludge samples; however, the patterns showed that a few compounds with 2- and 3-benzene rings were commonly found in the samples, whereas those with 4-, 5-, and 6-benzene rings were usually less commonly found. All the 44 sludge samples were within the B[a]P concentration limit for sludge applied to agricultural land in China （〈 3.0 rag kg^-1）. The probable sources of PAH contamination in the sludge samples were petroleum, petroleum products, and combustion of liquid and solid fuel. The concentrations and distributions of the 16 PAHs in sludge were related to sludge type, source, and treatment technology, together with the physicochemical properties. 相似文献
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目前国内有不少园林植物数据库,但是能为设计师提供实用有效信息的数据库并不多见。研究通过对风景园林设计师思维习惯和设计程序的调查,得出设计师最常用的植物设计属性元素。结合长江三角洲常用园林植物进行汇总分析,以构建符合设计要求的园林植物数据库。 相似文献