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Human-mediated seed dispersal is recognised as an important, but under-researched, issue. To assess the potential for tourists to act as unintentional seed dispersal agents, we reviewed published and unpublished data on seed dispersal via clothing, vehicles (cars) and in/on horses and donkeys, all of which can be used by tourists. Seeds from 754 species of terrestrial plants have been collected from these vectors, 15% of which are internationally recognised environmental weeds. Seeds were collected from personal clothing and equipment (228 species), the fur of donkeys and horses (42 species), horse dung (216 species) and vehicles (505 species). Most were herbs (429 species) or graminoids (237 species) and native to Europe. Annual Poa, White Clover, Kentucky Bluegrass and Yorkshire Fog were the most frequent species. There have been eight studies specifically on tourists, which identified 12 species on clothing, 26 on vehicles and 133 from horse dung. Methods that minimise the risk of tourists as human-mediated dispersal agents may therefore be appropriate for some tourism activities/destinations: suggestions are made. Further sampling using standardised experimental techniques is required to assess the relative risk associated with specific tourist activities and locations and determine which, and how much, seed is transported. 相似文献
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Paul Mwebaze Jim Monaghan Nicola Spence Alan MacLeod Martin Hare Brian Revell 《Journal of Agricultural Economics》2010,61(1):97-121
The risk of non‐indigenous plant pests entering the UK via international trade in fresh produce is increasing. The objective of this article is to identify existing and emerging supply sources for UK fresh produce importers and examine the extent to which they could provide invasion pathways. We tested the hypothesis that increased imports of fresh produce from new sources outside the European Union could increase the risks of non‐indigenous insect pests. We use a bio‐economic model approach in which the number of species arrivals is a function of the volume of imports, whereas the volume of imports itself is a function of gross domestic product, relative import prices and seasonality. The study has identified clear trends, which show import volumes of fresh produce and species detections increasing from new supply sources. If this trend continues in the future, then the UK inspection agency should expect to confront species from new suppliers in much greater numbers, given that import volumes of fresh produce are income elastic. 相似文献
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本文详述了狗的屠宰检疫、检验等技术要点。目前狗肉制品已成为大众食品。因此,对于人们的健康,对于公共卫生都有着重要意义,所以,做好其检疫、检验工作尤为重要。 相似文献
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随着我国改革开放逐步深入和外向型经济的快速发展,口岸通关的提速和便捷已成一个十分重要的投资条件。而我国传统的通关模式已不能适应快速发展的经济和对外贸易的需要。因此,就新加坡与我国通关模式进行介绍分析比较,并提出我国实施新型通关模式的建议。 相似文献
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结合社会实践,分析我国检验检疫面临的新问题与新挑战,提出要加快检验检疫制度标准化的进程,促进有关检验检疫法律法规的完善,加强政策制度的建设,填补法律空白,弥补法律漏洞,提高政策执行的可行性与科学性;加大检验检疫部门的行政监管力度,做到科学监管、依法监管、人性监管;完善我国检验检疫机构的行政配置,提高检验检疫机构的职能设置与国际标准的融合度,进而推进我国检验检疫事业的可持续发展,维护国家在进出口贸易中的经济利益,捍卫国家主权与形象尊严。 相似文献
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基于国际物流呈现的新形势,即国际物流更加集成化、标准化和网络化,同时国际物流园区更加便利化、国际物流业务更加多样化,阐述了国际物流与出入境检疫检验的密切关系,分析提出了国际物流的发展对检疫检验的新要求,为国际物流的快速发展提供参考。 相似文献
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文章根据模糊综合评判原理,建立了检验检疫标准化工作对出口企业运行绩效作用贡献率计算模型。根据计算结果,检验检疫标准化工作对我国整体企业出口增长率作用的贡献率为5.97%,对企业经济效益作用的贡献率为6.40%,对企业核心竞争力作用的贡献率为7.93%;对不同性质企业运行绩效作用贡献率的研究显示,对出口增长率、经济效益和核心竞争力作用贡献率最高的分别是国有企业、外商独资企业和中外合资企业;对不同专业领域企业运行绩效作用贡献率的研究显示,对出口增长率、经济效益和核心竞争力作用贡献率最高的分别是其他类企业(如卫生、化妆品、鉴定、认证认可、管理服务等领域企业)、机电领域企业和化矿金领域企业。 相似文献
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改革开放以来,我国的畜牧养殖业发展迅速,养殖的规模越来越大,对推动经济发展、促进食品生产加工繁荣起到了非常重要的促进作用。但与此同时,畜牧养殖过程中也会因为技术、环境或人为等因素的影响而导致养殖的动物感染疫病,不仅会给养殖管理增加了难度与工作量,还会因为动物疫病的隐藏性、传染性,以及检验检疫过程中出现的疏漏,给下游的食品生产加工质量带来直接影响,进而影响消费者的身体健康。所以,加强对动物养殖生产环节的检验检疫力度与质量,是保证食品源头安全的重要手段。 相似文献