游牧经济的机动性分析--以古代蒙古族的游牧经济为例

1800年以前,世界的军事优势一直控制在生活在亚欧大陆腹地的游牧民族手中.在此前两千五百多年间,游牧民族曾经在亚欧大陆纵横驰骋,东亚、南亚、西亚和欧洲的许多农业帝国纷纷被来自草原的游牧民族所吞并,其原因何在呢?本文认为,这正是游牧民族独特的生产方式赋予游牧民族的灵活的机动性所致.     

关于杜尔伯特蒙古族自治县农转牧情况及存在问题的调研报告

本文介绍了黑龙江省杜尔伯特蒙古族自治县农转牧发展情况、存在的问题及对策。     

社会工作视野下的城市少数民族流动人口问题

城市少数民族流动人口问题正逐渐成为社会关注的一大热点,文章主要对城市少数民族流动人口的现状、特点,对城市发挥的积极功能和城市少数民族流动人口问题的具体表现作一概述,并从社会工作这一新的视角分析了城市少数民族流动人口问题的成因,在此基础上就社会工作如何介入此问题提出一些建议.     

农业文化遗产的内涵及保护中应注意把握的八组关系

关于农业文化遗产的内涵及如何保护,学者及社会各界众说纷纭,莫衷一是。文章在梳理前 人相关研究和国际比较的基础上, 提出了农业文化遗产的完整概念及它与联合国粮农组织(FAO)“全 球重要农业遗产"(GIAHS)的区别。将农业文化遗产划分为十个大类,界定了各类农业遗产的特征与特 点。在结合国内外农业文化遗产保护实践的基础上,总结归纳了农业文化遗产保护过程中应当注意把 握的八组关系,即传统农业与现代农业的关系、遗产保护与农民利益的关系、生产功能与文化功能的关 系、保护主体与多方协调的关系、理论研究与实践推进的关系、现实保护与记忆留存的关系、政策导向与 制度建设的关系及保护主体与社会大众的关系, 提出了一些加强农业文化遗产保护的具体对策和 建议。     

Assessing the effects of land use and land cover patterns on thermal conditions using landscape metrics in city of Indianapolis,United States

Direct applications of remote sensing thermal infrared (TIR) data in landscape ecological research are rare due to limitations in the sensors, calibration, and difficulty in interpretation. Currently there is a general lack of methodology for examining the relationship between land surface temperatures (LST) derived from TIR data and landscape patterns extracted from optical sensors. A separation of landscapes into values directly related to their scale and signature is a key step. In this study, a Landsat ETM+ image of Indianapolis, Unites States, acquired on June 22, 2000, was spectrally unmixed (using spectral mixture analysis, SMA) into fraction endmembers of green vegetation, soil, high albedo, and low albedo. Impervious surface was then computed from the high and low albedo images. A hybrid classification procedure was developed to classify the fraction images into seven land use and land cover (LULC) classes. Using the fractional images, the landscape composition and pattern were examined. Next, pixel-based LST measurements were correlated with the landscape fractional components to investigate LULC based relationships between LST and impervious surface and green vegetation fractions. An examination of the relationship between the LULC and LST maps with landscape metrics was finally conducted to deepen understanding of their interactions. Results indicate that SMA-derived fraction images were effective for quantifying the urban morphology and for providing reliable measurements of biophysical variables. LST was found to be positively correlated with impervious surface fraction but negatively correlated with green vegetation fraction. Each temperature zone was associated with a dominant LULC category. Further research should be directed to the theoretical and applied implications of describing such relationships between LULC patterns and urban thermal conditions.

Bridging the divide in urban sustainability: from human exemptionalism to the new ecological paradigm

This paper reviews the main bodies of contemporary urban sustainability theory. From this analysis, two underpinning paradigms of urban sustainability are identified: (1) The ‘Human Exemptionalism Paradigm’ (HEP), which emphasizes the ability of humans to overcome environmental problems—see Urban Sociology, Urban Ecology, Urban Geography, Urban Psychology and Political Economy; and (2) The ‘New Ecological Paradigm’ (NEP), which emphasizes the criticality of ecological limits to human progress—see Urban Metabolism, Energy/Emergy Analysis and Ecological Footprinting. Each of these approaches is critically reviewed, highlighting their main assumptions, theoretical and practical foci. It is argued in the paper that if the related issues of urban sustainability and development are to be progressed, there needs to be: (1) a greater maturation of the NEP approaches, which are ‘relative newcomers’ to the area of urban theory; and (2) greater integration and dialogue between the HEP and NEP approaches to urban sustainability than has hitherto been the case.

Contribution analysis to analyze the effects of the health impact assessment at the local level: A case of urban revitalization

The health impact assessment (HIA) is a tool used to estimate the potential impact on health of non-health-related proposals prior to implementation. While it is increasingly used in Quebec, Canada, studies have not analyzed its medium-term impacts and potential long-term impacts. We conducted a contribution analysis using in-depth interviews with key stakeholders, as well as documents, observation and images related to HIA in order to analyze its impacts on the revitalization of road infrastructure, parks and green spaces, and residential housing. Our analysis not only reflects on the decision-making process through the adoption and implementation of HIA recommendations, but also on the link between actions implemented in the field and health outcomes.     

Urban community as resource: Evaluation of the mentors in Toledo schools program

We report findings from an evaluation of the Mentors in Toledo Schools program (MITS), which pairs adult community volunteers with elementary school students in need of reading support. Begun in 2012, MITS now operates in five elementary schools in Toledo Public Schools. A quasi-experimental study of 379 students (n = 128 mentored, n = 251 comparison) tested the effectiveness of MITS, using changes (fall to spring) in students’ scores on STAR Reading. Multilevel models demonstrate students who participated in MITS made statistically significant, and educationally meaningful, reading gains compared to students who did not participate. Further, an investigation of the importance of dosage revealed that number of mentoring sessions is related to students’ outcomes; students who participated in reading mentoring at least once per week showed the most educationally meaningful improvements. We also report qualitative feedback from adult program participants, including teachers, mentors, and site coordinators, to help contextualize the STAR Reading results. These findings speak to the opportunity for community volunteers to act as low-cost and effective supports for urban elementary school students who are at-risk for reading failure.     

Fostering CHANGE: Lessons from implementing a multi-country,multi-sector nutrition-sensitive agriculture project

Using agriculture to improve nutrition is an approach growing in popularity, with programs becoming increasingly complex and multisectoral. While there is an active line of research assessing the impacts of such programs, little has been written about the process of successfully implementing them. As such, this paper uses a multisectoral nutrition-sensitive agriculture program implemented in four African countries as a case study to address key challenges in and lessons learned from implementation. We highlight the overall flexibility of nutrition-sensitive agriculture but also the need to adapt certain aspects to the particular context, as well as the opportunities for cross-context learning (and the limits to this). Integrating rigorous evaluation into such complex programs and forging diverse cross-sectoral partnerships offer both rewards and challenges, upon which we reflect. Main lessons learned from the program include the importance of carefully sequencing interventions, retaining flexibility in implementation, allowing for considerable time for cross-sector integration and coordination, and considering community impacts when designing research.