共查询到18条相似文献,搜索用时 62 毫秒
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系统动力学是一种以反馈控制理论为基础、计算机仿真技术为手段,研究复杂社会经济大系统的方法。随着可持续发展战略的提出,该方法得到了广泛应用。综述了近年来系统动力学方法在我国可持续发展战略中的研究进展,着重介绍了该方法在区域资源生态承载力方面的研究,提出了系统动力学研究的方向。 相似文献
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环境友好型社会是一种人与自然和谐共生的社会形态。其核心内涵是人类的生产和消费活动与自然生态系统协调可持续发展。与资源节约型社会相比,环境友好型社会更为强调生产和消费活动对于自然生态环境的影响,强调人类必须将其生产和生活强度规范在生态环境的承载能力范围之内,强 相似文献
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切实加强和改善对金融的管理指导、支持服务,促进金融可持续发展,是推动区域经济实现科学发展的基础条件和必然要求。运用AHP-EVM组合赋权法和耦合协调度模型建造金融与区域经济的耦合协调评价指标体系,对环渤海地区的金融及区域经济耦合协调的演化过程进行分析,提出了促进环渤海金融与区域经济协调发展的政策建议。 相似文献
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通江县地处川东秦巴山区。全县62万人,幅员4100km~2,境内光、热、水、土地、生物资源丰富,通江银耳驰名中外。但曲于多方面原因,到目前为止,全县大部分农民的温饱问题尚未得到彻底解决,仍属于全省典型的老、山、边、穷地区。为了改变该县的面貌,在省系统办、省开发办、省科委、省国土局的领导下,省自然资源研究 相似文献
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The agricultural and industrial development of small cities is the primary environmental management strategy employed to make full use of extra labor in the rural areas of China. The ecological and economic consequences of this development strategy will affect over 100 million people and change the organization of the Chinese landscape. In this study, we examined the agricultural development of Shunde, a small city in Guangdong Province, over the period 1978 until 2000. Our analysis of the ecological and economic dynamics of the agricultural system revealed the dominant role of labor in the intensification of agricultural production, even though the use of fuels, fertilizers and machines also increased during this time. The Shunde agricultural system was examined from both biophysical or donor-based and human utility or receiver-based perspectives, using emergy and economic methods, respectively. After 22 years of urbanization, the Shunde agricultural system was still able to fill 96% of the local demand for agricultural products using only 6% of its total yield compared to using 14% of the total yield in 1978. Aquaculture developed quickly during the study period as grain production decreased. In 2000, the production of fish, pork, and vegetables accounted for 92% of the total emergy output of the system; however, the emergy buying power of the money received in exchange was lower than the emergy contained in the products exported. The excess emergy exported is the basis for a high quality diet delivered to city dwellers at a relatively low price. In the 1980s, the productivity of both land and labor increased; but after 1992 the productivity of labor decreased, causing the efficiency of the whole agricultural system to decrease. We recommend that processing plants be established for the main agricultural products of Shunde to decrease the emergy loss in trading and to increase employment. The effect of including monetized ecosystem services in the balance between the emergy delivered to the markets in agricultural products and the emergy buying power of the money received was to decrease the emergy gained by the Shunde agricultural system. 相似文献
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We investigate the potential of mapping institutional work in communities as a method for both analyzing and formulating local development strategy. Twelve Canadian case communities experiencing dramatic ups and downs (‘boom and bust towns’) serve as the empirical base. Analytically, we find that institutional work for strategy takes on very diverse forms, some of them not described in the literature, and further identify a special class of institutional work associated with leadership. Normatively, we demonstrate that mapping institutional work can be a structured process of self-reflection underpinning strategy. For the Canadian case study, we find that lack of local autonomy is often a stumbling block for strategy. More broadly, we conclude that mapping institutional work for strategy works best when governance evolutions are grasped as context, and when strategy itself is understood in its complex, multifaceted nature: a narrative, a way of linking institutions, and an institution in itself. 相似文献
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湛江市位于祖国大陆的最南端,地形以平原、台地为主,土地资源利用受台风、干早等自然因素的影响。作者对湛江市土地资源可持续利用的限制因子进行了分析,提出了滋江市土地资源可持续利用的对策和措施。 相似文献
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论旅游景区循环经济的策略 总被引:8,自引:1,他引:8
本文尝试将循环经济的理论与方法导入旅游业,提出了旅游业循环经济的内涵,以及旅游景区循环经济的概念与发展模式,井着重就旅游景区循环经济的实施策略进行了研究。 相似文献
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重庆地区土地人口承载力 SD 模型研究 总被引:2,自引:0,他引:2
本文建立了重庆地区土地人口承载力的系统动力学模型,模型包括人口、土地利用、种植业、渔业、林业、畜牧业和粮食储备7个子系统。作者分析了模型的主要结构及其功能,并对模型进行了仿真模拟,同时提出政策建议。本文模型可作为决策者进行决策分析的工具。 相似文献
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从群落生态学的角度对茶园节肢动物群落动态变化进行了初步探讨.通过对安徽省黄山市休宁县农家茶园的调查,获得了关于茶园节肢动物群落的组成、个体数量及其物种数等数据.结果表明,4-5月份茶园一般不需要进行施药防治,此时天敌种类和数量相对较多,对害虫起控制作用,这一时期应做好害虫测报和防治准备,为茶农防治茶园害虫提供科学方法. 相似文献