烟台外夹河东岸湿地的生态保护和恢复研究   总被引：1，自引：0，他引：1  

李娟  林鹰  高建 《湿地科学与管理》2011,7(1):33-36

在对外夹河东岸湿地自然地理概况、空间格局和资源现状等进行综合分析的基础上,通过分析湿地保护和恢复面临的问题,提出水系安全格局、水岸空间恢复、植物配置、动物多样性恢复等保护和恢复策略,为该地区的生态保护与可持续发展提供参考。  相似文献   

烟台北部古元古代芝罘群变形变质作用及演化     

薛志忠  冯利彬  刘玉潭 《山东国土资源》2001,(Z1)

在分析烟台北部芝罘群主要变质岩类的变质矿物共生组合、变质相系及构造岩等特征的基础上 ,对该群变形、变质作用及演化特征进行了探讨。认为该区芝罘群曾经历 1期韧性变形作用和 4期变质作用 (古元古代高角闪岩相、中元古代早期低角闪岩相、中元古代晚期高绿片岩相及新元古代低绿片岩相变质作用 )。  相似文献   

The Geological Significance of a Tuffite Interlayer in the Cretaceous Port Island Formation in Northeastern Hong Kong     

ZHAO Longlong  WANG Lulin  TIAN Mingzhong  WU Fadong 《《地质学报》英文版》2018,92(3):1041-1052

The Port Island Formation(PIF), a typical Cretaceous red bed in Hong Kong, is dominated by non-fossiliferous, reddish clastic rocks, making it difficult to determine the sedimentary age of PIF precisely. Previous studies assigned the PIF to Late Cretaceous provisionally only on the basis of its stratigraphic sequence and lithology. This study identified a tuffite interlayer in the PIF and a zircon UPb age of 128.2±2.7 Ma by LA-ICP-MS method was obtained. It's the first time to date the depositional age of the PIF with a reliable chronological constraint. With the support of stratigraphic evidence, we concluded that the geological age of PIF should be Early Cretaceous rather than Late Cretaceous. Based on the volcanic history of Hong Kong and Southeast China and the distribution of the PIF in Mirs Bay, it is believed that there was no volcanic activity in Hong Kong in ca. 128 Ma. The tuffite interlayer discovered in PIF was formed by the deposition of volcanic ash, which might originate from remote region outside Hong Kong, in an aquatic environment on Port Island. The identification of the tuffite interlayer, as the response to a volcanic event, has great significance not only to the studies of establishment and regional correlation of the strata system and the geological evolution in Hong Kong,but also to the study of volcanic activities in Southeast China.  相似文献   

巴基斯坦瓜达尔港地区干旱灾害风险评估     

宋柏泱  陈报章 《地理研究》2022,41(8):2251-2264

在全球变暖和极端气候事件频发的背景下,分析干旱特征及其风险不仅对经济社会发展具有重要实际价值,而且可为研究气候变化与人类活动的相互作用关系提供参考。瓜达尔港地区是“一带一路”倡议的重要交通要道。本文遵循灾害风险评估理论,采用趋势分析方法对瓜达尔港地区进行干旱灾害风险分析。结果表明：① 瓜达尔港地区整体干旱灾害危险性指数为0.5左右,南部地区遭受干旱灾害的可能性比北部低,东部地区遭受干旱灾害的可能性较高;② 暴露度指数整体在0.5左右,中部沿海地区由于经济发达而较容易受到干旱灾害影响,西北部地区有较高的暴露度指数;③ 脆弱性指数整体偏低,并且大致呈由北向南递减的趋势;④ 瓜达尔港地区为中度干旱风险,其中部沿海地区、东北部以及西部小部分区域有相对较高的干旱风险,只有较少的零星区域有较低的干旱风险水平;⑤ 该地区帕默尔干旱指数（PDSI）变化率全部呈下降趋势,意味着该地区整体干旱趋势有所增加。  相似文献   

烟台市海岸带地质环境问题及保护建议     

程鑫  张杰  毕建新  殷焘 《山东地质》2013,(10):52-56

烟台市海岸带地处山东半岛蓝色经济区内,其资源丰富,具有重要的经济地位。但受自然地质条件及人类工程活动等影响,产生了许多地质环境问题。该文分析了烟台市海岸带内存在的主要地质环境问题,并在此基础上提出了海岸带保护建议,对于实现海岸带建设与地质环境保护的共同协调发展具有重要的意义。  相似文献   

Heavy-metal loadings related to urban contamination in the Kooloonbung Creek catchment,Port Macquarie,New South Wales     

P. M. Ashley  M. E. Napier 《Australian Journal of Earth Sciences》2013,60(6):843-862

Urbanisation and industrial development lead to contamination of estuaries and streams with dispersed loadings of heavy metals and metalloids. Contributions of these elements also occur from natural sources. This study provides baseline geochemical data on the respective natural and anthropogenic inputs of Cu, Pb, Zn, Cd, As, Sb, Cr, Ni, Mn and S to estuarine, fluvial and wetland sediments, and adjacent soils, in the Kooloonbung Creek catchment that drains the Port Macquarie urban area in north coastal New South Wales. There have been anthropogenic additions of Cu, Pb, Zn and As from dispersed urban sources at Port Macquarie, but they are restricted to the local catchment and do not impact on the adjacent Hastings River estuary. The most contaminated sediments display enrichment factors up to 20 × for Cu and Pb, 9 × for Zn and 5 × for As relative to local background values. However, only one value (for Pb) exceeds National Water Quality Management Strategy interim sediment quality guideline (high) values. On the other hand, sediments and local soils are commonly strongly enriched in Cr, Ni and Mn, reflecting adjacent ultramafic and mafic rock substrate and lateritic regolith. Concentrations of Cr and Ni are commonly well above interim sediment quality guideline (high) values for sediments, but are in mineralogical forms that are not readily bioavailable. Sediment and soil quality guideline values consequently need to recognise natural enrichments and the mineralogical siting of heavy metals. Although dissolved concentrations of heavy metals in stream waters are commonly low, there is evidence for mobility of Cu, Zn, Fe and Al. Parts of the Kooloonbung Creek wetland area lie on sulfidic estuarine sediments (potential acid sulfate soils). Experimental oxidation of uncontaminated and contaminated sulfidic sediments leads to substantial dissolution of heavy metals under acid conditions, with subsequent aquatic mobility. The results warn about disturbance and oxidation of potential acid sulfate soils that have been contaminated by urban and natural heavy-metal sources.  相似文献   

独山港表层沉积物重金属潜在生态风险的Monte Carlo模拟          下载免费PDF全文

陈德慧  许恒韬  钱健  周青松  宋伟华 《海洋学研究》2016,34(2):65-74

基于沉积物重金属污染风险评估系统的不确定性和随机性,采用Monte Carlo模拟技术定量刻画沉积物重金属含量数据分布特征,并通过与潜在生态风险指数法的综合集成,评估了独山港海域表层沉积物重金属(Cu、Pb、Zn、Cr、Cd、Hg和As)的潜在生态风险水平。结果表明,港区中Cu、Pb和Zn为中等污染,Cd、Cr、Hg和As为轻微污染;综合污染指数C_d处于轻微污染的概率为38.32%,处于中等污染的概率为61.68%。所有7种重金属污染程度以及潜在生态风险指数RI均为轻微级。敏感性分析表明,Cu、Zn和Cr对C_d和RI起主导作用。  相似文献   

烟台市海岸带地质环境问题及保护建议     

程鑫  张杰  毕建新  殷焘 《山东国土资源》2013,29(10)

烟台市海岸带地处山东半岛蓝色经济区内,其资源丰富,具有重要的经济地位。但受自然地质条件及人类工程活动等影响,产生了许多地质环境问题。该文分析了烟台市海岸带内存在的主要地质环境问题,并在此基础上提出了海岸带保护建议,对于实现海岸带建设与地质环境保护的共同协调发展具有重要的意义。  相似文献   

烟台市新增亿元GDP用地量的分析探讨          下载免费PDF全文

孙红岩  石晓 《山东国土资源》2012,28(2):60-62

新增亿元GDP用地量是衡量土地节约集约利用的重要指标,在分析烟台市新增亿元GDP用地量现状的基础上,确定烟台市新增亿元GDP用地量,并以此为基础对烟台市未来5年合理新增用地量进行预测,为促进土地节约集约利用提供参考。  相似文献   

高光谱遥感土壤有机质信息提取研究   总被引：16，自引：1，他引：15  

周萍  王润生  阎柏琨  杨苏明  王青华 《地理科学进展》2008,27(5):27-34

土壤反射光谱特征分析是反演土壤信息参量的基础资料。本文阐述了使用航空成像光谱仪OMIS- Ⅰ数据并 结合ASD FieldSpec FR(350~2500nm)便携式光谱仪获取野外光谱数据, 对山东省烟台市招远东良乡原状农用土有 机质含量进行反演, 从而实现有机质填图。通过对土壤原反射率对数一阶微分变换并确定其与SOM的相关性, 最 终建立相应的多元线性回归方程。分析认为土壤有机质的测定选用762nm、874nm 及1667nm 波段在本次研究中效 果最佳。该模型也可作为土壤有机质估测和评价的参考。  相似文献