共查询到19条相似文献,搜索用时 234 毫秒
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以唐山市为例,将生态安全格局与修复分区相结合,实现点线面共同指导分区。首先基于“压力—状态—潜力”框架,利用z-score标准化,在乡镇尺度上进行国土空间生态修复分区;其次构建生态安全格局,采用形态学空间格局分析与景观连通性提取生态源地,利用最小累积阻力模型识别生态廊道;最终通过生态安全格局对生态修复分区进行修正。结果表明:(1)研究区高退化压力区主要位于城市中部及各县区中心,并向四周递减;生态系统服务状态分布为北高中低,且高值区向低值区存在明显过渡;恢复潜力为由北向南先减少后增多。(2)修正后生态修复分区划分为生态保育区、生态潜在恢复区、生态优先修复区、生态修复治理区、生态修复利用区5大类型区,其中生态保育区依据生态源地与廊道所在位置划为一级保育区、二级保育区。 相似文献
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近年来我国沙棘产业发展迅猛,尤其是在我国的“三北”地区产生了良好的生态效益、经济效益和社会效益。内蒙古自治区一直以来都是我国沙害最严重的地区之一,沙棘产业正逐步成为该地区经济发展、环境改善、农民增收等新兴生态经济产业。基于此,从国内外沙棘发展的大背景入手,详细分析了内蒙古沙棘产业在国内的地位及其产业发展现状、存在问题,最后从生物学特性的角度分析了沙棘应对风沙的生态响应,为内蒙古沙棘产业、治沙、环境改善等提供参考。 相似文献
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柑橘产业是重庆市云阳县确定的两大农业主导产业(牛羊、柑橘)之一,通过近年来的发展,全县柑橘面积达到2万耐、产量达到15万t,再现了“两岸青山、一江碧水”的生态观光区、特色产业带,实现了增绿与增收的双赢。分析柑橘产业在生态涵养发展区建设中的现状、作用及存在的主要问题,提出了“坚持差异化发展,控制合理规模;加强产业扶持,提高综合效益;科学编制规划,管好用好资金”等对策。 相似文献
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澜沧江流域(兰坪段)生态修复存在问题与对策 总被引:3,自引:0,他引:3
生态环境退化是当今世界面临的重大问题之一,下面从自然条件、环境、土壤及地质分析了兰坪县澜沧江流域生态现状,找出现阶段存在问题及原因,指出修复育林是人工造林、低效林改造,人工造林是生态修复主要技术,而低效林改造是生态修复辅助技术。针对该地区生态修复提出的多条对策。 相似文献
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关于三峡库区柑桔产业发展的思考 总被引:1,自引:0,他引:1
重庆三峡库区柑桔产业既是保护三峡库区生态环境的重要产业,也是三峡库区经济发展和移民安稳致富的支柱产业,是我国甜橙发展的生态最适宜区,该产业经过6年多的发展取得了较大成效,已经初具规模。但是在库区柑桔产业迅速发展的过程中也存在一些问题,本文对存在的问题进行思考分析,并提出了对策。 相似文献
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为了加快污染矿区生态环境的修复,为煤矿区的污染复垦提供优势的植物资源。采用盆栽土配方法,将微生物与煤矿区适生植物进行组合,研究其生态效应。结果表明:接种VA菌根能提高荠菜、鬼针草、苍耳等植物的株高和生物量,促进煤矿区适生植物对土壤Cd、Cr、Cu、Ni、Pb等重金属的吸收,提高了荠菜、鬼针草和苍耳的重金属修复效果。 相似文献
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为了促进北京市昌平区蔬菜产业的可持续发展,推进北京市昌平区蔬菜产业的高质量发展,从而满足居民对绿色蔬菜的需求,对北京市蔬菜产业整体情况、昌平区蔬菜产业发展现状和蔬菜产业规划方向的背景及发展方向进行了综合分析,并提出北京市昌平区的蔬菜产业可以在未来发展品牌蔬菜、观光蔬菜及设施蔬菜的建议。 相似文献
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Since about 90% of the natural floodplain area of rivers in Europe has been reclaimed and now lacks river dynamics, nature rehabilitation along rivers is of crucial importance for the restoration of their natural function. Flood protection, self-purification of surface water, groundwater recharge, species protection and migration are all involved in this process. It is now generally recognised that rivers form natural arteries in Europe but are also of economic importance and are recognisable cultural landscape. Many examples are already available of successful small river restoration projects. Several species thought to be extinct have now reappeared and characteristic species have also expanded in recent years. This paper concentrates on the concept of setting targets for river restoration as exemplified by the Meuse River. A modelling exercise shows the restraints of current habitat configuration and the potential for habitat restoration along the river. A policy analysis, using a strategic approach, illustrates the influence of the decision making process on the targets for natural river development. River dynamics play a key factor in determining the potential for persistent populations of target animal species along the river, with the help of an expert system (LARCH, Landscape ecological Analysis and Rules for the Configuration of Habitat). The potentials for the increase of dispersion and biodiversity and the maximisation of ecological benefits at different scales, are also considered. 相似文献
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为了优化食用菌产业结构,促进食用菌产业的可持续发展。给出了调整优化食用菌产业结构、促进食用菌产业生态经济建设的一些措施;提出重视经济效益和生态效益,合理引导发展中小食用菌企业的思路。对食用菌产业优化和生态经济的发展具有一定的参考价值。 相似文献
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The goals of landscape planning are multiple for rural ecosystems of the resettlement area in the Hubei Province of China. They relate to the types, diversity and patterns of the ecosystems, and to the conservation of ecosystem functions and biodiversity. We were interested in the improvement of socio-economic conditions, and the promotion of the development of farmland ecosystems and natural forest ecosystems. The landscape planning took into account the conservation and the restoration of forestlands, and the reconstructions of farmlands, towns and villages. The areas of towns and villages were assigned by trade-off analysis balancing ecological, economic and social benefits. The spatial pattern of used lands was designed by a multi-criteria optimal spatial planning, resulting in the strengthening of some primary ecosystem functions. In the resettlement area forests will expand to a matrix, and cropland patches together with tree fences will form patch-corridor systems. Significant ecological, economic and social benefits can be derived from this landscape pattern.This revised version was published online in May 2005 with corrections to the Cover Date. 相似文献