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COD分光光度法与标准方法对比实验 总被引:3,自引:0,他引:3
CODcr分光光度快速测定法具有简便,快速,节能,省试剂等优点。其测定结果与标准方法之间有良好的可比性,最低检测限为5.0mg/l 。 相似文献
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Pik AJ Dangerfield JM Bramble RA Angus C Nipperess DA 《Environmental monitoring and assessment》2002,75(2):179-199
Recent conceptual and technological solutions to biodiversityassessment allow large numbers of invertebrate specimens to beprocessed rapidly and provide researchers and practitioners with a unique tool for characterizing habitats. One applicationof these advances is the ability to detect and monitor small-scale habitat heterogeneity and so provide a measure of ecosystem restoration. This case study presents a test of theefficacy of using invertebrates to assess and monitor ecologicalrestoration following bush regeneration. Eight contiguous habitatpatches within a suburb of northern Sydney, Australia, were selected to represent areas that had undergone different bushregeneration techniques. A nearby and relatively undisturbed area of bushland was also sampled. A total of 57 806 ground-active invertebrate specimens from 35 different orders were collected in pitfall traps. 1 246 ant (Formicidae) specimens were further sorted into 46 ant morphospecies from20 genera. Analyses of the three taxonomic data sets, includingtwo different data transformations, demonstrated that: (i) invertebrate communities successfully characterized different sites, providing a high degree of differentiation among sites;(ii) ordinations of the sites allowed visual assessment of theimpact of each management technique on the habitat relativeto undisturbed habitats; and (iii) characterization of sitescould be achieved using abundance classes or binary countsof ant morphospecies, representing potential cost and timesavings. The project duration was a total of three personweeks and cost less than US$3,000 (1999 prices) to complete.Measurement of invertebrate assemblages will provide a toolfor both rapid assessment of management decisions and ameans by which to implement adaptive management and restoration. 相似文献
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MapInfo是目前流行的地理信息系统 (GIS)应用软件之一 ,由于其强大的地图功能 ,在地震监测预报中得到了越来越广泛的应用。安徽省地震局合肥遥测台网不久前完成了台网自己的速报软件的开发研制工作 ,其中运用了MapInfo部分图形操作功能。本文介绍MapInfo技术在台肥遥测台网地震速报中的一些具体应用 相似文献
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Sophie S. Parker Gregory B. Pauly James Moore Naomi S. Fraga John J. Knapp Zachary Principe Brian V. Brown John M. Randall Brian S. Cohen Thomas A. Wake 《Conservation biology》2018,32(5):1007-1019
When conservation strategies require new, field‐based information, practitioners must find the best ways to rapidly deliver high‐quality survey data. To address this challenge, several rapid‐assessment approaches have been developed since the early 1990s. These typically involve large areas, take many months to complete, and are not appropriate when conservation‐relevant survey data are urgently needed for a specific locale. In contrast, bioblitzes are designed for quick collection of site‐specific survey data. Although bioblitzes are commonly used to achieve educational or public‐engagement goals, conservation practitioners are increasingly using a modified bioblitz approach to generate conservation‐relevant data while simultaneously enhancing research capacity and building working partnerships focused on conservation concerns. We term these modified events expert bioblitzes. Several expert bioblitzes have taken place on lands of conservation concern in Southern California and have involved collaborative efforts of government agencies, nonprofit organizations, botanic gardens, museums, and universities. The results of expert bioblitzes directly informed on‐the‐ground conservation and decision‐making; increased capacity for rapid deployment of expert bioblitzes in the future; and fostered collaboration and communication among taxonomically and institutionally diverse experts. As research and conservation funding becomes increasingly scarce, expert bioblitzes can play an increasingly important role in biodiversity conservation. 相似文献
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珠江三角洲快速城市化地区生态安全研究——以佛山市为例 总被引:12,自引:1,他引:11
借助于统计学分析方法、Landsat7ETM+遥感影像解译及GIS综合评价手段,构建了相对生态压力比值REP、相对剩余生态容量值R REC及相对生态风险度指数RERI,对珠江三角洲快速城市化的典型城市佛山市进行了区域开发的生态承载力分析及生态风险度评价,揭示了佛山市域的生态安全总体态势及问题成因;并从区域可持续发展角度提出应重视在区域开发中尽可能科学合理地维护林地、湿地、农田、城市防护林带等自然及半自然景观要素的系统性与连续性,从宏观尺度上引导城市集聚并对城市化的不良生态后果予以积极预防和有效调控,从而降低城镇化的生态风险。 相似文献