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   624篇
  免费   31篇
  2024年   3篇
  2023年   10篇
  2022年   15篇
  2021年   17篇
  2020年   23篇
  2019年   34篇
  2018年   19篇
  2017年   37篇
  2016年   36篇
  2015年   27篇
  2014年   25篇
  2013年   83篇
  2012年   29篇
  2011年   27篇
  2010年   18篇
  2009年   24篇
  2008年   28篇
  2007年   37篇
  2006年   29篇
  2005年   26篇
  2004年   13篇
  2003年   20篇
  2002年   19篇
  2001年   16篇
  2000年   15篇
  1999年   4篇
  1998年   6篇
  1997年   4篇
  1996年   1篇
  1994年   3篇
  1993年   3篇
  1992年   1篇
  1991年   2篇
  1983年   1篇
排序方式: 共有655条查询结果,搜索用时 31 毫秒
41.
ABSTRACT Water is a resource that both unites and divides people in the Upper Hunter Valley of New South Wales, where many communities are facing the prospect of large‐scale open‐cut coalmining developments on productive mixed use land, or already live in proximity to mines and power stations. This article analyses conflicts over a proposed coal mine at Bickham in the Upper Hunter Valley, by contrasting the various protagonists' discourses of water scarcity, supply, and connectivity. It examines the ways in which the terms of opposition are narrowed to the arena of state and industry supported science and economic development, marginalising other cultural values and environmental ethics that are integral to opponents' discourses. Opponents have achieved some measure of success through contestation of the uncertain science of hydrological modelling, bolstered by the context of drought and increasing public acceptance of climate change science.  相似文献   
42.
ABSTRACT Set in the Aramia River basin, this article explores the intimate and interactive relationship between communities in Western Province, Papua New Guinea, and the water that dominates the environment in which they live. Located amongst tidal rivers, creeks and lagoons, Gogodala villages sit high on ‘islands’ of land. In this environment, water is the site of seasonal change and the space of movement. The Aramia River is synonymous with an ancestral figure called Sawiya who travelled in her canoe, naming, creating and populating the water and land of the area. As the ‘mother of all fish’, Sawiya controls the movement and abundance of fish and other aquatic resources. Water is embodied in Sawiya, whose capacities to both nourish and punish are the basis of seasonal variations in fish, and in the colour and clarity of water in the local lagoons and rivers. Set against the backdrop of the Ok Tedi Mine and recent logging operations on the Aramia, the article explores some of the ways in which water and its resources are defined and experienced in this rural community and the impact this may have on the exploitation and development of natural resources in PNG.  相似文献   
43.
通过对1965年前后两个阶段美国中餐业的变迁,蒙特利尔公园市中餐业的兴起及影响,圣盖博谷地区中餐业更深刻、更广泛变化的阐述,本文分析了新一代华人移民在多元文化背景和与主流社会的磨合中,所追求的生活方式和包括饮食习惯在内的文化认同。  相似文献   
44.
We examine here the discourses surrounding the lunchbox taken to school by children: aspects both of the contents and of how children consume and understand these.1 The observations presented here form part of the preliminary stages of a broader project examining ‘Men, Children and Food’. The project itself is part of a large research programme – ‘Changing Families, Changing Food’ – funded by the Leverhulme Trust (award number F/00118/AQ) from 2006 to 2008, and situated at the University of Sheffield, working in collaboration with colleagues at Royal Holloway University of London. Our aims, in ‘Men, Children and Food’, are to explore the experiences of fathers (and other male figures in the household) and of children, in relation to food practices, including ways in which the two interconnect. View all notes Examples within and beyond the UK suggest that the lunchbox is a container for various aspects of the private and public. What traces can be found inside of wider social relations, including processes of care and surveillance? We argue that the lunchbox consists of intersecting spatialities, within which children constitute a public face, and create identities, relationships and subjectivities; this perspective frames opportunities for priorities in future empirical research with children.  相似文献   
45.
This paper poses the question: what is the role of cultural capital at the interface of environment, economy and society, and what other factors affect this role? A review of Pierre Bourdieu's concept of cultural capital and later developments of this concept by ecological economists serves to establish the values that comprise cultural capital, and its relationship to natural capital and economic capital. These relationships are investigated through a case study of a small coastal community, Coles Bay and the Freycinet Peninsula, in Tasmania. Three study groups are identified which comprise the communities associated with this place; long‐term residents, repeat visitors and tourists making a single visit. The complexity of the relationships of people with place are revealed through an examination of the different forms of capital (social, cultural and economic) relating to the different study groups. The dynamics of the social, economic and environmental realities of Coles Bay and the Freycinet Peninsula are seen to be complex and interlinked, with the potential to provide a model for action in communities of similar character and location.  相似文献   
46.
Hamstrung by weak institutions that undermine conventional environmental regulatory tools, policymakers in developing countries are increasingly turning to voluntary approaches. To date, however, there have appeared few evaluations of these policy experiments. To help fill this gap, we summarize arguments for and against the use of voluntary regulation in developing countries, review the nascent literature on the topic, and present case studies of agreements negotiated between regulators and leather tanners in an industrial city in Mexico, a national environmental audit program in Mexico, and a national public disclosure program in India. Admittedly few in number, these three case studies nevertheless suggest that although voluntary environmental regulation in developing countries is a risky endeavor, it is by no means doomed to failure. The risks can be minimized by emphasizing the dissemination of information about pollution and pollution abatement options and by avoiding voluntary approaches in certain situations—those where regulatory and nonregulatory pressures for improved environmental performance are weak and where polluters can block quantified targets, individual sanctions for noncompliance, and other widely accepted prerequisites of effective voluntary initiatives.  相似文献   
47.
In a study at the largest northeastern Iowa food pantry between 2004 and 2006, we found that neither working nor accessing government benefits has a meaningful impact on lessening the odds that a person will need long‐term food assistance. In other words, the working poor are at greater risk for making recurrent visits to the food pantry than those who do not work. Pantry clients who work are more likely to have sacrificed food to pay for other life necessities. Moreover, government benefits do not seem to provide an adequate food safety net. As a result, nonprofits are experiencing increased pressure to fill the gap. If we wish to maintain the government responsibility to alleviate hunger in our country, benefits for eligible citizens must be increased or food assistance nonprofits need more government support. Otherwise we should face the fact that as an undeclared public policy, our society tolerates hunger.  相似文献   
48.
本文以上海老城厢城市景观演变的历史过程为主线,分析了主导这一过程的驱动因素及其相互间的关系。在人为侵占与河浜自然属性的交互作用下,"因浜成路"一直是上海老城厢独具特色的城市扩展方式;19世纪下半叶,传统的环境基础加上西方公共卫生观念的介入,使原来民间层面上的"因浜成路"发展为官方主导下的"填浜筑路",主干河浜消亡的速度骤然加快。这虽然局部改善了老城厢的市容与卫生状况,却对整体的水网生态和后来的城市环境造成了不利影响。这一过程中的内在规律,恰从区域可持续发展的角度,对城市化进程中人与自然间的耦合关系和互动尺度做出了注解,因而具有一定的启发意义。  相似文献   
49.
明清时期国家对于汉水下游的水利管理制度经历一个变迁的过程,与这一区域的水利问题的日益突出密切相关,垸田的发展以及带来的问题是主要的因素。钟祥至沙洋的汉江干堤极易溃决,并且关系到整个下游地区的安全,因此在人力组织、资金筹集、岁修维护上,国家的政策表现出明显的倾斜性,相对于沙洋以下的区域,给予了充分的重视。沙洋以下,天门、潜江、沔阳等州县所在区域主要以垸田为主,国家将这一区域的堤防修筑与维护主要交由地方来进行。垸堤岁修维护采取堤甲制的组织形式,由垸民完成,一方面没有固定的资金,另一方面在正常年景之下,垸民可以获得基本的物质生存,因此垸堤的维护面临相当的困难。  相似文献   
50.
Within the site of Kutná Hora-Denemark (Kutná Hora distr., central Bohemia – Eneolithic, ?ivná? Culture, 3000–2800 BC), 893 frog bones or bone fragments were present in five archaeological features. All identified specimens are of the Common Frog (Rana temporaria Linnaeus, 1758). Males predominate, according to humeral morphology, and only adult individuals are present. The most important findings come from feature 36, where an accumulation of 739 frog bones (MNI = 123) were found, of which 10% (NISP) were burned. This and other contextual evidence indicates that they relate to activity of the Eneolithic people in the settlement. The predominance of hind leg bones and other circumstantial evidence suggest that the frogs were part of the human diet. Behavioural studies of this species suggest that the frogs were gathered from small ponds during the months of March or April. Similar findings are rare.  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