区域土壤污染普查监测点位布设方法探讨

以江苏无锡和镇江两地为例,比较了8 km×8 km网格和4 km×4 km网格两种布点方式下,所得到的土壤中11种无机元素（As、Cd、Cr、Cu、Hg、Mn、Ni、Pb、Se、V、Zn）以及4类有机污染物（有机氯农药、多环芳烃、多氯联苯和酞酸酯类）的监测结果。按顺序统计量排列,发现多数无机元素和有机污染物的含量,从最小值到90%值总体吻合,而在90%值以上,两种布点方式的调查测定值出现差异,说明对于污染物含量低的地区,8 km×8 km网格和4 km×4 km网格获得的结论基本一致,而污染物含量高的     

GPS-机多天线技术在镇江北固山北侧斜坡监测中的应用

本文介绍了GPS-机多天线技术无人值守的自动化监测系统的应用,解决了在滑坡监测中GPS形变监测成本高、自动化程度差的难题。     

A Canadian policy framework to mitigate plastic marine pollution

Marine pollution from plastic debris is a global problem causing negative impacts in the marine environment. Plastic marine debris as a contaminant is increasing, especially in Canada. While the impacts of macroplastics are well known in the literature, there are relatively few policy studies related to mitigating microplastic toxicity in the environment. Despite overwhelming evidence of the threat of plastic in the marine environment, there remains inadequate or limited policies to address their mitigation, particularly microplastic debris. Existing policies for waste management, marine debris monitoring and awareness campaigns were evaluated from other jurisdictions. Policies and recommendations were developed for the Canadian context. Recommendations include improved practices for: (1) law and waste management strategies; (2) education, outreach and awareness; (3) source identification; and (4) increased monitoring and further research.     

Optimizing alginate beads for the immobilisation of Phaeodactylum tricornutum in estuarine waters

This study addresses the influence of calcium as hardening agent, on alginate gel bead stability and suitability for the growth of Phaeodactylum tricornutum Bohlin (Bacillariophyceae) in estuarine waters. Alginate beads produced with 1, 2, 4, 5 and 6% of CaCl₂ solutions were investigated for stability and suitability for growth of P. tricornutum cells, under mean salinity 27, at 220 and 440 rpm stirring laboratory conditions, and in devices placed under in situ estuarine conditions. Gel stability and suitability for cell growth were evaluated through bead diameter, bead disruption, dissolution and loss of spherical shape, cell viability and specific growth rates. Beads gelled with 5% CaCl₂ were found the most suitable to sustain gel stability and cell growth in the estuarine waters. These beads were surveyed during dredging operations in the Tagus estuary, both in situ and in estuarine water under laboratory conditions, showing significantly lowered growth rates possibly due to Mn, Co and As accumulated in the cells. Results confirmed that the monitoring tool presented is reliable and effective for the assessment of anthropogenic impacts.     

Overview of GIS Applications in Estuarine Monitoring and Assessment Research

Geographic information systems (GIS) tools are now considered integral in estuarine monitoring and assessment research. A synopsis is presented of our estuarine applications of GIS in the Northeast region of the U.S. The applications discussed cover sample site selection, support for field sampling activities, quality assurance of data, spatial display of geographic referenced information, quantitative spatial analysis of data, and communication of results.     

A time series of mercury accumulation and improvement of dietary feed in net caged Atlantic salmon (Salmo salar)

The study was undertaken to investigate the uptake of mercury in salmon throughout the entire farming period at the net cage. Mercury concentrations in muscle, liver, kidney, and gill and responses to the various dietary mercury concentrations were determined. The accumulation of mercury is in the order of kidney>gill=liver>muscle. The highest mercury peak concentrations were observed for both kidney and gill at the parr-smolt period, while liver and muscle mercury peaked one month later after caging at the grow-out site. High dietary sodium and calcium fed to the salmon contributed to the elevation of mercury in kidney and gill during the smolting process. The mercury burden over the grow-out period increased sharply with a linear relationship of mercury uptake. The tissue mercury burden per gram of growth was calculated using the slope of mercury burden and the slope of growth over the period of each stage. The results showed dietary mercury loadings on marketable salmon were within tolerance limits of FDA and US EPA. Rapid growth of salmon and low dietary mercury progressively reduces the uptake of mercury in salmon. The time series of mercury monitoring showed that mercury concentrations in salmon were greater at the parr stage in freshwater than at the grow-out stage in salt water.     

基于数据库的地下水监测数据管理方案与应用

地下水监测数据管理存在效率低、数据成果获取滞后等问题。本文以关系型数据库为核心,提出一种管理高效、数据成果即时获取、成果质量高的地下水监测数据管理方案,并建立了应用系统,使用两组数据进行实验对比分析。该应用系统可以实现规范、高效率、高质量和自动化的地下水监测数据管理模式。     

基于3S技术的中国红树林湿地监测研究概述

本文概述了基于3S技术的中国红树林湿地研究与监测现状。关于红树林湿地的监测研究,主要涉及了红树林湿地资源监测研究、红树林湿地动态监测研究中不同遥感处理软件的应用和红树林湿地监测系统研究;此外,还展望了3S技术在红树林监测中的发展前景以及建立中国红树林湿地监测系统的构想。     

湿地恢复研究综述

湿地恢复研究是当今恢复生态学研究的主要内容这一，从湿地恢复的基本概念入手，阐述了恢复与湿地恢复的基本内涵，简述了国内外湿地恢复研究的进展。以生态学原理为基础，分析了湿地恢复了３个基本原则，即可行性原则、稀缺性和优先性原则、美学原则。也阐述了湿地恢复的主要目标。从沼汉、河流及河缘湿地、湖泊出发，简述了湿地恢复的基本策略。文中还从生态、社会、经济相整合的角度剖析了湿地恢复的复合性问题。文章最后对湿地恢     

大监自动气象站实时数据传输监控方法探讨

应用VisualBasic编程语言,根据自动气象站数据采集卸载原理、实时数据传输流程开发了自动气象站数据实时监控程序,界面操作灵活简便、实用性和通用性强。该系统在云南省丽江市大监站投入运行,对已建成自动气象站的实时数据传输实现自动监控,保证数据传输质量,为提高自动气象站运行监控能力和资料共享应用都能发挥积极作用。