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1.
镇江市不断深化农业经营机制改革,大力发展产加销一条龙,贸工农一体化经营,把一家一户农民家庭小生产同国内外大市场有机联系起来,提高了农民的组织程度和专业化生产水平,协调了一二三产业间经济利益,建立了新的经济关系的优质,高产,高效,高创汇的市场产农业及新型组织管理体系,加快了农业生产社会化,产业化,市场化,现代化进程,使农业产业走向市场迈出了可喜的一步。  相似文献   

2.
记述了唐古拉山东段高寒灌丛的分布,组成,结构,生长,演替,主要类型及其与当地畜牧业的关系,探讨了生态特征,稳定原因和价值,提出了经营利用建议。  相似文献   

3.
卢发艺 《环境教育》2004,(12):58-59
一、研究目的确 由于人类排放的污染物,使水的物理,化学性质发生变化或生物群落组成发生变化,从而降低了使用价值的现象叫做水污染。我的家乡在一个偏僻的小山村,本来这里是山清水秀,但近几年,随着经济的发展,偏僻的小山村也热闹起来,运木头的车子来来往往,采金的机器日夜轰鸣。农农的饭桌上丰富了,衣着光鲜了,笑容灿烂了。可是原本清澈见底的小河,变浑浊了,河水变小了,干涸了。  相似文献   

4.
野马     
我是一匹野马, 一匹久违了草原的野马。 当我还是马驹时, 我在草原上飞驰。 用我的前蹄, 越过柔软的草丛, 跨过清漱的小澳。 和我的同伴们一起, 接受风雨雷电的洗礼, 享受来自大自然的气息。 后来,我长大了, 可革原失去了以前的美丽, 那是因为一种生物入侵, 它们毁了草地, 它们污染了小澳, 它们让我颠沛流离, 可我却无能为力…… 我开始为命运叹J忽, 生命里没有了精彩的演蜂, 没有了快活的路戏, 没有了伴我的鸟善虫鱼。 孤独的我,象个幽灵, 在记忆中搜寻肴逝去的涟漪。 再后来,我老了, 最后,我将死去, 一匹没有草原…  相似文献   

5.
文章针对黄冈市矿业经济发展的需要,在充分考虑黄冈市地区经济发展,矿产资源分布,矿业经济合理布局的必要性的基础上,对黄冈市矿业经济布局作了详细深入研究,提出了“一个中心,四个矿业规划区,五类开发矿种,十个矿业基地”的布局构架,为该市矿业经济发展提供了明确的发展思路,并指出了发展重点,也为政府宏观调控和矿政管理提供了依据。  相似文献   

6.
青蛙无语     
童年,如果说乡村是个摇篮,那么蛙声就是眠歌了。夜晚,你忽听得断续的蛙鸣替代了隐隐的犬吠,立即感到一身的轻松和温暖——冬已去了。在千万的生灵中,最先感到春风柔和的就是那冬眠的蛙了,它就像熟睡的婴儿能感应轻手轻脚的妈妈来到摇篮的旁边,突然伸一个懒腰睁开了眼。蛙鼓一敲,算是春天开始了绿色的竞赛,尖红的小草绿了,鹅黄的柳叶绿了,麦苗的海更是把女儿绿任意泼洒,汩汩滔滔,涌向天际与绿云相拥。薄雾飘了起来,露珠在苇叶上挂着,牧童坐在水牛背上,沿着小河缓缓地走过去。这时青蛙勾肩搭背,隐在苇叶下,呱呱—呱呱——谈…  相似文献   

7.
《环境教育》2007,(11):7-9
群贤齐聚大会堂,高朋满座听报告。齐心协力谋发展,又是五年春光好。2007年10月15日,中国共产党第十七次全国代表大会隆重召开,全国振奋、世界瞩目。十七大报告从5个方面、15处论述了环境保护,并将建设生态文明作为全面建设小康社会奋斗目标新要求之一,这在历届党的政治报告中是第一次,充分表明我们党把环境保护工作融入了科学发展的全局,放到了十分重要的战略位置,是我们党关于环境保护理论认识一次新的飞跃,充分体现了环境保护工作进入了党和国家发展大局,进入了经济社会建设主战场,进入了重要战略机遇期,环境保护的责任加重了。  相似文献   

8.
本文分析评价了温州市农业资源,农业开发条件与潜力,提出了农业区域开发的指导思想,总体目标与主要任务,确定了农业商品生产基地,划分了农业开发区,阐述了农业区域开发的对策与措施。  相似文献   

9.
市场经济的逐步形成,给企业提出了高标准的要求,一大批优秀企业脱颖而出,产品畅销国内外,为国争了光,为民致富闯出了一条新路。但是·也有一些企业.因种种原因,经营效果不好或不够好,以致造成企*亏损。在亏损企业中·有一部分是排放污染物的单位,有的还是重点污染源,他们破坏了生态.污染了环境,这些单位的领导,对缴纳排污费,多数有为难情绪,持消极态度·极个别的同志有抵触情绪,甚至拒缴排污费。那么亏损企业究竟该不该缴纳排污费呢?最近.我们走访了一些亏损企业,发现企业亏损之原因很多,大致可分如下几种情况:l、政…  相似文献   

10.
综述了我国铜冶炼厂在生产中的三废主要状况、三废治理方法及其效果,近年来,由于在生产中利用了先进的冶炼技术和设备,促进了三废更易治理,而且对环境保护更加有效,针对目前三废存在的问题,提出了一些建议,并讨论了一些问题。  相似文献   

11.
土地利用变化所引起的环境影响及其环境安全评价已成为全球变化研究的核心。根据区域环境质量评价方法,引入信息熵的概念,以武汉市为例分析了近14年土地利用结构变化对环境的影响,并从土地-环境-经济三方面对其作了比较分析。结果表明,武汉市的整体环境趋于恶化,分区环境质量变化不平衡,生态系统经济价值总态势趋于下降。  相似文献   

12.
大规模的农业扩张和全球气候变化导致东北地区发生剧烈的土地利用/土地覆盖变化。本研究分析了研究区1976—2008年的土地利用变化和生长季各月气温的变化趋势,并结合农业扩张程度,探究LUCC对农业扩张和气候变化的响应,为指导农业发展规划和保障国家粮食安全提供理论依据。结果表明,1976—2008年农田面积逐步增加,生长季气温一直呈上升趋势。1976—2001年生长季气温的上升趋势不稳定,气温变化程度较大;2001—2008年,农业扩张放缓,生长季气温上升趋势显著,且上升趋势一直增加,气温变化比上一时期更稳定;且这两个时期农业扩张和气候变化对土地利用强度的影响在南北和东西方向上均存在明显差异。  相似文献   

13.
咸宁市咸安区耕地资源变化态势与对策   总被引:1,自引:0,他引:1  
耕地的减少是咸宁市咸安区面临的一个主要问题.在分析1949~2000年咸安区耕地变化的基础上,应用相关分析法分析了近10年来引起该区耕地变化的原因:人口增加、经济发展及土地管理政策等,并提出了严格控制人口增长,控制城市规模,加强土地管理,切实保护耕地及建立耕地流转制度以推动适度规模经营等措施.  相似文献   

14.
采用气候倾向率、趋势系数、普通克里格插值、Mann—Kendall检验、小波分析等方法对陕北高原1960-2009年最高气温、最低气温的时空变化特征与突变特点进行分析。结果表明,近50年来陕北高原最高、最低气温均有明显增温趋势,分别为0.3℃/10a和0.32℃/10a;最高、最低气温增温幅度存在季节差异,最高气温在春季增温幅度最大,最低气温在冬季增温幅度最大;最高、最低气温增温的地区差异也较显著,最高气温增温趋势从北向南呈间隔分布,最低气温增温趋势从西向东逐渐递减;最高、最低气温升温突变显著,分别为1994年和1993年;最低气温突变早于最高气温,说明最低气温比最高气温敏感。  相似文献   

15.
典型区耕地变化与GDP值变化的脱钩研究   总被引:3,自引:0,他引:3  
研究目的:为了深入分析耕地占用与GDP值增长之间的关系,研究不同区域之间耕地数量变化与GDP值变化的差异性与相似性,有利于平衡耕地占用与GDP值增长之间的矛盾,同时有利于“状态-压力-响应”体系的研究。研究方法:主要是应用脱钩理论,引入了脱钩指数来分析不同区域各时点耕地数量变化与GDP值变化之间的关系,同时运用相关分析与回归分析的方法,确立了不同研究区耕地数量与社会经济指标之间的相关性,建立了耕地面积与GDP值的回归曲线。研究结论:耕地数量的变化与GDP值之间的关系因地域差异而表现不同,但是也存在一些相似点,即各个区域相对脱钩与绝对脱钩的年份基本一样;此外脱钩理论有利于进一步深化土地利用的研究。  相似文献   

16.
This article elaborates on and discusses gendered dimensions of climate change response in Swedish municipalities. There are indications that attitudes and behaviour to the environment and climate change are gendered. This evidence together with our own work further indicates that gender awareness is most probably an important influence on how municipalities respond to climate change. The aim of this study was to investigate if and how gendered aspects of climate change response are integrated in the Swedish response to climate change. The potential causal relationships between a high level of awareness of the gendered aspects of climate change and the levels of climate change response were investigated. We asked whether there is a positive relationship between gender awareness and the quality of the communities' climate change policies and practice. Indications of such a relationship prompt a change in research priorities – paying more attention to gender – and in subsequent policy developments.  相似文献   

17.
The impacts of land use and land cover (LULC) change in buffer zones surrounding protected ecological reserves have important implications for the management and conservation of these protected areas. This study examines the spatial and temporal patterns of LULC change along the boundary of Rio Abiseo National Park in the Northern Peruvian Andes. Landscape change within four ecological zones was evaluated based on trends expected to occur between 1987 and 2001. Landsat TM and ETM imagery were used to produce LULC classification maps for both years using a hybrid supervised/unsupervised approach. LULC changes were measured using landscape metrics and from-to change maps created by post-classification change detection. Contrary to expectations, tropical upper wet montane forest increased despite being threatened by human-induced fires and cattle grazing of the highland grasslands inside the park. Within the park’s buffer zone, tropical moist forest remnants were fragmented into more numerous and smaller patches between 1987 and 2001; this was in part due to conversion into agricultural land. The methods used in this study provide an effective way to monitor LULC change detection and support the management of protected areas and their surrounding environments.  相似文献   

18.
The hydrologic response to statistically downscaled general circulation model simulations of daily surface climate and land cover through 2099 was assessed for the Apalachicola‐Chattahoochee‐Flint River Basin located in the southeastern United States. Projections of climate, urbanization, vegetation, and surface‐depression storage capacity were used as inputs to the Precipitation‐Runoff Modeling System to simulate projected impacts on hydrologic response. Surface runoff substantially increased when land cover change was applied. However, once the surface depression storage was added to mitigate the land cover change and increases of surface runoff (due to urbanization), the groundwater flow component then increased. For hydrologic studies that include projections of land cover change (urbanization in particular), any analysis of runoff beyond the change in total runoff should include effects of stormwater management practices as these features affect flow timing and magnitude and may be useful in mitigating land cover change impacts on streamflow. Potential changes in water availability and how biota may respond to changes in flow regime in response to climate and land cover change may prove challenging for managers attempting to balance the needs of future development and the environment. However, these models are still useful for assessing the relative impacts of climate and land cover change and for evaluating tradeoffs when managing to mitigate different stressors.  相似文献   

19.
Integrated watershed management (IWM) is a priority, especially in semiarid regions that are concurrently affected by population growth, land use change, soil erosion, and poor governance. In developing countries, IWM is often done without any support tool, scientific data, or deep knowledge of territory characteristics. The aim of this study was to present a case study to apply a decision support tool to prioritize areas for territory management. A simple, quantitative multi‐criteria analysis was applied in a semiarid basin of the Ecuadorian Andes to identify the zones of greatest concern for implementation of resource conservation and management practices at a local and regional scale. In addition to describing the current state of the conditions of this basin, our results suggest scenarios of change in relation to official population projections based on spatial analysis of land use change. Analysis resulted in a scattered distribution of priority values within the watershed, so a hierarchical rule was incorporated to define priorities at the subwatershed (SW) scale. Our analysis identified four SW of very high priority and urgent need to implement management practices. Based on projections of future change due to population growth and land cover change, the number of subbasins that require more attention was doubled. Finally, this study includes zones for management or conservation of the land, according to the Sustainable Development Goals.  相似文献   

20.
一个完善的制度是保证旅游业持续发展的关键.在新制度经济理论的指导下和界定制度变迁相关概念的基础上,分析了制度变迁对旅游发展的效应.从制度变迁对旅游发展是否存在效应、正效应还是负效应、具体效应与不同区域的效应有无差异等方面构建了研究框架和主要内容.  相似文献   

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