首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   120篇
  免费   6篇
  国内免费   1篇
林业   29篇
农学   3篇
基础科学   12篇
  2篇
综合类   56篇
农作物   1篇
畜牧兽医   12篇
园艺   3篇
植物保护   9篇
  2024年   2篇
  2022年   4篇
  2021年   2篇
  2020年   7篇
  2019年   4篇
  2018年   5篇
  2017年   4篇
  2016年   7篇
  2015年   9篇
  2014年   15篇
  2013年   8篇
  2012年   4篇
  2011年   6篇
  2010年   2篇
  2009年   6篇
  2008年   5篇
  2007年   8篇
  2006年   5篇
  2005年   8篇
  2004年   2篇
  2003年   2篇
  2002年   3篇
  2000年   2篇
  1996年   2篇
  1993年   3篇
  1992年   1篇
  1988年   1篇
排序方式: 共有127条查询结果,搜索用时 453 毫秒
111.
“海南风物异中华”,但因长期以来对海南旅游购物环节缺乏足够重视,文章分析了海南旅游商品如何由原来的具有使用价值上升为具有使用价值和价值的两重性,得出只有通过产业化开发进而在国际旅游岛的建设中发挥应有的作用.  相似文献   
112.
研究以广东海洋大学湖光校区的西湖景观为例,结合学校特色和区域发展现状分析了项目设计的定位,在遵从人性化、多元性、感受学术、注重交流和展现空间秩序的原则下,阐述了项目立意构思。从项目基地环境情况出发,分析了"一环""二带""多节点"的全园景观格局,又根据场地周边的基地现状与功能,探讨了观赏休憩区、自习交流区、湿地畅游区、学园自治区4个功能分区的具体规划。以入口广场、晨习廊道、栈桥水景、学园自治小庭院、流光台、海洋音乐喷泉等为重点,介绍了景观的细部设计。项目旨在将校园文化与现代园林完美结合,建设园中园的现代校园游园场所。  相似文献   
113.
Ecotourism is a sustainable use of forest resources, as compared to traditional uses such as logging or mining. However, whether turning forests into tourist sites can generate incomes comparable to the lucrative traditional activities is less clear. We estimated the recreational values of the Belum-Temengor Rainforest Complex (BTRC) in Perak, Malaysia, and compared it with the alternative of one-time consumptive revenues from logging. Based on data from an on-site survey of 367 visitors to BTRC, direct non-consumptive use values were computed using the individual travel cost approach and the truncated Poisson count data model. The annual direct non-consumptive use value was RM14.66 million based on the estimated number of nights spent and willingness-to-pay per trip. The future cash flows of recreation demand were RM614 million, RM970 million, and RM1.86 billion for the next 30, 50, and 100 years, respectively. Own-price, cross-price, and income elasticities of recreation demand were also computed. Visitors’ on-site travel cost, alternative-site travel cost, income, ethnicity (Malay), and marital status (Single) were associated with recreation demand. Our main conclusion is that the direct non-consumptive use values from recreation demand and other indirect use and non-use values from forest conservation exceed the one-time consumptive revenues from logging.  相似文献   
114.
基于WebGIS的济南市旅游信息系统设计与实现   总被引:3,自引:0,他引:3  
针对济南市旅游业发展情况,采用了WebGIS基于ASP的实现技术及地图网络发布工具Surpermap,设计了基于WebGIS的旅游信息系统.该系统使旅游者能够获得图文并茂的、可交互的动态旅游图,同时,该系统的构建为济南市的旅游管理和旅游业发展提供可靠的信息和依据.  相似文献   
115.
文中采用问卷调查和现场访谈相结合的方式,对山西平遥古城的中外游客进行调查。利用SPSS对调查结果进行数理统计,分析了影响游客客主交互行为的人口学特征因素、旅游经验因素、障碍类因素、旅游动机类因素、环境因素。从因素的作用机制及结合平遥古城的相关统计或调查分析来看,在大多数因素方面,它们对平遥古城的客主交互机会和效应都是有利的,平遥古城具备良好的旅游客主交互基础。  相似文献   
116.
作为现代散文的一个重要方面,山水游记散文在现代散文中取得了很大成就,可谓名家辈出,妙文不断。朱自清、俞平伯、郁达夫作为现代散文的重要作家,以山水散文为载体,突出了朱自清散文的素朴与典雅,俞平伯的中国古典情致式的感伤,文人士大夫式的凄艳,郁达夫的浪漫率真与忧郁感伤。他们的个人风格与其气质经历有很大关系,真正体现了"文如其人"。  相似文献   
117.
Remote and unique destinations present difficulties when attempting to construct traditional travel cost models to value recreation demand. The biggest limitation comes from the lack of variation in the dependent variable, defined as the number of trips taken over a set time frame. There are various approaches that can be used for overcoming limitations of the traditional travel cost model in the context of remote destinations. This study applies an adaptation of the standard model to estimate recreation benefits of bear viewing at Katmai National Park and Preserve in Alaska, which represents a once-in-a-lifetime experience for many visitors. Results demonstrate that visitors to this park’s Brooks Camp area are willing to pay an average of US$287 per day of bear viewing. Implications of these findings for valuing recreation at other remote destinations are discussed.  相似文献   
118.
A widespread outbreak by Salmonella infantis, infecting a total of 226 people, occurred in Finland at the beginning of August 1986. Of those infected, 107 were railway passengers, 91 were airline passengers and 28 were employed in a food processing establishment. The outbreak among the railway passengers was caused by egg sandwiches, the airline passengers were infected by a meal served on board and the catering employees by the breakfast served in the establishment. The outbreak was caused by food prepared in the establishment's kitchen. The employees' breakfasts had probably been contaminated by an employee who was a symptom-free Salmonella infantis carrier, and a number of the employees subsequently became infected, leading to widespread contamination of the food prepared in the establishment. The spread of the outbreak was further influenced by a heatwave at the time and by shortcomings in the cold storage facilities. The kitchen's hygiene supervision and the quality control of its output were reorganized after the outbreak.  相似文献   
119.
选择与旅游活动最为相关的因素一游客作为研究对象,探讨游客选择野象谷景区作为旅游对象的行为意识。以客源地、年龄、受教育程度等游客基本特征和出游次数、出游方式和伙伴等游客旅游行为特征分析游客对景区的选择;以游客自我保护意识、对景区的要求以及游客希望采取的管理措施探讨游客的保护意识。以制作警示牌、加设高架栈道、聘请亚洲象跟踪人员等措施减少游客因观看亚洲象带来的危险。  相似文献   
120.
分析了福建入境旅游客源市场的基本格局,引用1996-2005年的入境游客数据,采用灰色预测模型,对日本、“东盟五国”(新、马、泰、菲律宾和印尼)、美国、加拿大、“欧盟四国”(英国、德国、法国、意大利)、澳大利亚、新西兰、俄罗斯等15个主要客源国和我国港澳台地区的入境游客数量发展态势进行预测。并提出了开拓福建入境旅游客源市场的对策。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号