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51.
休宁县传统山泉流水养鱼池是一种开放且自成体系的特殊生态系统,具有丰富的生态环境多样性、物种多样性和遗传多样性。鱼池依山傍水、就地取材而建,完美地镶嵌在林间旱地、溪泉两侧、村落民居中,尽显人文与自然生态和谐之美,是一种古老而先进的养殖设施。利用山区充沛的流水和饲草资源,产出极高品质的水产品,依靠复杂完善的生态链和食物网系统高效清除养鱼污染。其强大的生态功能和深厚的美学人文价值,对现代设施渔业以及城市景观建设具有积极的指导和借鉴意义。 相似文献
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从实现海洋开发可持续发展看,化解"三渔"问题具有重要性和紧迫性。论文利用系统研究方法对"三渔"问题的子系统渔业、渔民、渔村问题的本质进行归纳分析。研究表明,渔业生产过密化、渔民粘连化、渔村过疏化是"三渔"问题的系统性特征,而化解"三渔"问题应当从建设和谐海洋社会,特别是通过现代渔业转型、渔村重生及渔民市民化转型等思路来解决。 相似文献
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山东省沿海软骨鱼的种类与分布 总被引：1，自引：0，他引：1
山东省海域有软骨鱼40种,隶属于21科;介绍了软骨鱼的分布。 相似文献
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在知识的海洋中,如何让学生掌握更多的知识,这是每一位教师在思考的问题。本文主要从授之以渔角度阐述,讨论如何促进学生自主学习,提高教学质量和学习效率。 相似文献
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Sayeeda Rahman Md Anwarul Azim Majumder Rabiul Ahasan SM Moslehuddin Ahmed Palash Das Nuzhat Rahman 《International Journal of Consumer Studies》2016,40(2):152-159
Bangladesh has been suffering from rampant food adulteration for the last few decades. Dishonest businessmen use formalin illegally as preservative to prevent spoilage and increase shelf‐life of fish. Prolonged consumption of formalin adulterated fish may cause serious health hazards (i.e. cancers) which lead to increased morbidity and mortality. The aim of the review was to examine the extent and magnitude of illegal formalin treatment in fish sold in domestic markets of Bangladesh. A systematic review was conducted using conventional databases and non‐conventional approaches to identify the relevant studies. Out of nine studies, eight confirmed the presence of formalin in fish collected from the markets of four main cities. Large and imported fishes were found to be mainly affected. Formalin adulterated fish was reported in seven studies. The fish were tested using a locally developed kit, and the amount of formalin treated fish ranged between 0.5 and 50%. Two other studies used the spectrophotometric method and reported specific formalin levels. The study conducted in Dhaka found mean levels of formalin to be 402.35 mg/kg in imported fishes and 118.60 mg/kg in local fishes which were much higher than the WHO recommended levels. In another study conducted in Mymensingh, formalin levels ranged between 1.4 and 7.3 mg/kg in both marketed and freshly caught pond fishes. The use of accurate, simple, specific and sensitive techniques is therefore highly recommended. The government and other agencies should address the issue as a priority basis by formulating effective policies and programs to safeguard the health of the public. 相似文献
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Julia K. Christenson Gabrielle M. O'Kane Anna K. Farmery Alexandra McManus 《International Journal of Consumer Studies》2017,41(3):299-311
Although seafood is considered to be an important part of a healthy and balanced diet, many Australians still do not consume the recommended amounts for good health. Fish is an excellent source of protein, omega‐3 fatty acids and other nutrients, and studies have shown that seafood‐rich diets can have a lower impact on the environment than diets high in other animal proteins. Concerns about health and sustainability have led to an increased interest in understanding consumers' attitudes toward seafood. This review aims to assess the current knowledge on drivers and barriers to seafood consumption in the Australian context. Systematic search strategies were used to identify relevant peer‐reviewed journal articles from three electronic databases (SCOPUS, Web of Science and Science Direct) and grey literature reports from targeted government and industry websites. Accepted studies investigated drivers and/or barriers to seafood consumption in Australia through qualitative, quantitative, or mixed method designs. Initial searches identified 504 publications from which fourteen met the criteria for the review process. The reviewed studies revealed that influences on seafood consumption in Australia are similar to those identified in other developed countries. The leading drivers of seafood consumption are health, taste, and convenience, while the main barriers are price, availability, concerns about quality, and a lack of confidence in selecting and preparing seafood. Some possible intervention strategies targeted toward these factors are explored in the discussion. Future research should focus on designing and implementing specific interventions so that their effectiveness in increasing seafood consumption in Australia can be assessed. 相似文献
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淄博市南部山区山泉冷水资源丰富,水质清澈,无污染,常年水温恒定在14~16℃之间。20世纪80年代中期开始陆续引进虹鳟、金鳟、鲟鱼等冷水性鱼类进行人工养殖,为当地农村经济发展和渔农增收做出了积极贡献。但近几年,由于鱼池老化失修、品种单一退化、鱼病频繁发生、技术创新不足、市场开拓不力等矛盾日益凸显,养殖利润空间几乎被挤占殆尽,养殖产业受到极大冲击。本文提出构建优质冷水鱼产业集群的路径及措施,旨在按照现代渔业发展的要求,整合各种资源,发挥集群效应,为当地冷水鱼产业健康发展提供一种尝试。 相似文献