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51.
For gardeners, the garden is a significant aspect of identity. The number of people who garden and consider themselves environmentally friendly is growing. This exploratory study investigated whether “environmental gardening identity” is a measurable construct that motivates environmentally-friendly home gardening cultivation practices above that predicted by the previously validated environmental identity scale (EID, Clayton, 2003). A mail questionnaire was sent to a random sample of 800 urban-suburban self-identified gardeners (61% return rate.) The survey contained four sections: (1) the environmental identity scale (EID); (2) a new scale instrument designed to measure environmental gardening identity (EGID), (3) multiple choice questions addressing specific gardening practices, and (4) demographic questions. Results show that environmental identity, as measured by the EID, significantly predicts ecological gardening behavior. Additionally, it was found that the environmental gardening identity scale (EGID) comprises five subscales, all of which are highly correlated with the environmental identity scale (EID), and three of which explain the variability in gardening practices above that explained by the EID. However, it does not appear that these three subscales of the EGID specifically measure identity. Additional analyses show that respondents' reasons to have a garden are linked to the strength of both EID and EGID, especially for those respondents who garden as a way to connect with nature. 相似文献
52.
随着新的教育、教学技术的不断涌现和新的教学模式的提出,传统的实验教学模式已经不能满足现代素质教育的要求,急需新的更为先进的教学模式来提高实验教学的效果。在此背景下,笔者通过研究探究式教学模式,并将此模式应用到大学物理实验教学中,取得了良好的效果。 相似文献
53.
54.
Frances Sharples Fred J. Brenner Bruce Piasecki Arthur J. Stewart Helga Van Miegroet 《Environmental management》1990,14(2):279-285
Frances Sharples is a terrestrial ecologist in the Environmental Science Division of the Oak Ridge National Laboratory in
Oak Ridge, Tennessee, operated by Martin Marietta Energy Systems, Inc., under Contract No. DE-AC05-840R21400 with the US Department
of Energy. Publication No. 3413, Environmental Sciences Division, ORNL. 相似文献
55.
Allotments are a valued part of the British cultural landscape, with benefits often associated with exercise and fresh food. However, there are other significant but less tangible values that are often implicit in green-space research, but which require further substantiation. This article sheds light on the role of allotments as places where people engage in meaningful relationships with the natural world. Drawing on in-depth qualitative data, we develop a co-constructionist understanding of the human–nature relationships which exist between plot-holders and the non-human agents they encounter. These non-human elements are implicated in formulating important social values, such as identity, knowledge and community. Furthermore, they are seen to help collapse the natural-social dualism, which is often cited as a root cause of unsustainability, and enrich the lives of plot-holders in diverse and significant ways. Advocacy for their inclusion in urban communities is discussed in relation to the development of socially and environmentally sustainable cities. 相似文献
56.
57.
Frances G Sussman 《Journal of Environmental Economics and Management》1984,11(1):84-89
A modification of Freeman's model of willingness to pay for reduction of environmental risk to life is presented. Rather than treating work-related, consumption-related, and exogenous hazards as additive components of an overall level of safety, the revised model acknowledges the interdependence of these components. The results derived from this approach imply that (a) willingness to pay for a marginal reduction in risk depends upon the individual's initial level of utility; and (b) willingness to pay for a reduction in a given component of safety is related to the level of each component risk. The results of the revised model become more dramatic at higher levels of risk. 相似文献
58.
Debier C Ylitalo GM Weise M Gulland F Costa DP Le Boeuf BJ de Tillesse T Larondelle Y 《Environmental pollution (Barking, Essex : 1987)》2005,134(2):323-332
In order to better understand the fate of metals during the biodegradation of organic matter in soils, an in vitro incubation experiment was conducted with metal-rich and metal-free leaves of Arabidopsis halleri introduced in a non-contaminated soil. During incubation of these microcosms, we followed the partitioning of Zn and Cd between the solution and their solid components, by determining the metal contents of six soil fractions and dissolved metals after granulo-densimetric separations at selected times. Microbial biomass and exchangeable metals in K(2)SO(4) solutions were also determined at the same times, and two main stages were identified. The first one takes place after a fast abiotic transfer of Zn and Cd from readily soluble plant tissues onto fine soil constituents, keeping metals away from the liquid phase: during about 14 days, microbial biomass increased as well as metal contents of some soil fractions, particularly those rich in particulate organic matter. During the second stage, between 14 and 60 days and for the metal-rich microcosms, Zn and Cd contents in solution increased, while microbial biomass decreased instead of staying constant as in control. A change of Zn and Cd speciation is assumed, from non-toxic adsorbed forms to more toxic species in solution. Remaining metal-rich plant residues seem to create a stable organic C compartment in the soil. 相似文献
59.
In rural Africa, wild foods provide diversity, vitamins and minerals in the diet. They are also important at times of food shortage. This paper discusses issues concerning wild food use in semiarid West Africa, and presents the results of a study of the use of wild plant foods in northeast Nigeria. Interviews with farmers and herders identified a total of 67 wild foods, coming from 53 species of plant. Knowledge of wild foods varied according to ethnic group and gender. Some wild foods caused side effects if eaten in excess. Land-use change due to agricultural expansion seems to be increasing the areas where wild foods are most commonly found. Wild foods are important as a supplement to daily diet, and at times of food scarcity. In addition, they provide an opportunity to generate income when they are collected and traded. The paper concludes that wild foods are an important coping strategy for rural communities. Further research is needed to determine whether local institutions and community-based natural resource management regimes are sufficient to conserve this resource. 相似文献
60.
Emma Frances Bloomfield Denise Tillery 《Environmental Communication: A Journal of Nature and Culture》2019,13(1):23-34
This study uses a topical, rhetorical approach to analyze how climate change denial circulates online through the 25 most popular posts on the Watts Up With That and the Global Warming Policy Forum Facebook pages. These groups adopt the appearance of credibility through reposting and hyperlinking, thus establishing a supportive, networked space among other skeptical sites, while distancing readers from original sources of scientific information. Visitors use a variety of rhetorical strategies to echo posts’ main themes and to discredit alternative viewpoints. Differences between the topoi and rhetorical strategies of WUWT and the GWPF show that the climate change denial community is multifaceted and makes use of social media affordances to craft the appearance of legitimacy. This project contributes to our knowledge of how scientific information is co-opted, manipulated, and circulated in online spaces and how online features shape environmental discourse practices. 相似文献