村镇水污染治理的措施

农村的水污染问题已十分严重,成为新农村建设的制约因素之一。本文概述了村镇目前的水污染状况,指出治理村镇水污染的必要性。结合村镇自身及其水污染的特点,建议村镇治理水污染要根据自身发展状况、因地制宜的选择处理工艺。提出了几种经济、高效、节能和简便易行的治理措施。     

How to promote residents’ use of green space: An empirically grounded agent-based modeling approach

One focus of those responsible for making urban policies has been the improvement of green space effectiveness, including environmental plans and eco-city initiatives. In the evaluation of policy effectiveness, residents’ needs, values and preferences are critical but often overlooked. This study proposes an agent-based model (ABM) for simulating the effectiveness of policy measures on residents’ decision making with regard to the use of green space. Using a residential questionnaire survey conducted in Shanghai, China, we model individual decision making with artificial neural networks that account for the heterogeneous characteristics and imperfect rationality in the decision-making process, and compare three policy scenarios in local green space provision. The results of the model illustrate the unequal effectiveness of green space policies among different social groups and different types of green space (i.e., urban parks, neighborhood parks, and community gardens), and the sensitivity analysis suggests the key factors in different stages of green space provision. Based on the results, we argue that tailored policies are needed in order to meet residents’ heterogeneous needs; in fact, relatively “soft” policies, particularly those that promote social interaction and participation, play a significant role in the appeal of green space use. Finally, policy suggestions are provided for the optimization of green space provision.     

浅析节约型城市园林绿化建设和管理

本文对节约型城市园林绿化的建设和管理进行了探讨。就城市园林绿化如何提倡和推广资源的节约和合理利用。提出了相应的解决措施。     

从特色农业到外向型农业产业化——安徽省李兴镇农村经济发展的个案研究

外向型农业产业化是农村商品经济发展到一定阶段而产生的。作者在对安徽省李兴镇调研的基础上描述和分析了这一过程。在特色农业的起步阶段，主要形式是“市场+农户”，这种形式的主要缺陷是不能解决小生产与大市场的矛盾。为了克服这一缺陷，形成了外向型农业产业化的雏形:“大户+社会化服务+农户”。这种形式的运作取得了很大的成功，但是这种形式的进一步发展也而临一些制约因素。本文探索了进一步发展外向型农业产业化的路径依赖。