首页 | 本学科首页   官方微博 | 高级检索  
相似文献
 共查询到20条相似文献,搜索用时 734 毫秒
1.
新疆夏尔希里自然保护区生态质量评价研究   总被引:1,自引:0,他引:1  
新疆夏尔希里自然保护区是以寒温带原始状态的山地森林生态系统及特有、珍稀物种为主要保护对象的自然保护区.由于地理位置和自然条件独特,保护区聚集了不少形态上原始、分类上孤立的古老孑遗的珍稀物种,是中国为数极少的边界保护区之一.选取自然性、多样性、稀有性、代表性、面积适宜性、人类干扰、稳定性等指标,应用层次分析法和综合评价法.对夏尔希里自然保护区生态质量进行了综合评价.结果表明,该保护区生态质量为很好,具有较高的保护和研究价值.  相似文献   

2.
唐巍 《四川环境》2010,29(4):100-105
对川东北-川西输气联络线工程对四川驷马省级自然保护区自然资源、自然生态系统和主要保护对象的影响进行了评估。其主要结论是:在施工期,四川驷马自然保护区的森林面积将减少,水体质量将降低,部分野生动物将受到损伤或远离现有的栖息地,部分植物个体将被采伐,生态系统结构将发生变化,主要保护对象也将受到一定的影响;在运营期,四川驷马自然保护区自然资源、自然生态系统和主要保护对象受联络线工程的影响较轻。为了减轻影响,从控制影响因素方面提出了一些建议。  相似文献   

3.
何爱红 《资源开发与市场》2012,(12):1129-1130,1135
旅游资源经济价值的量化能促进资源的合理开发和保护利用,对旅游资源价值的评估是监测旅游资源的保护与可持续开发利用效果的理论基础。以甘肃国家级自然保护区为研究对象,运用游憩费用法对甘肃国家级自然保护区旅游资源的游憩价值进行了评估,计算出其游憩总价值。这些结果可为甘肃国家级自然保护区的旅游资源管理决策和旅游资源补偿提供一定的参考。  相似文献   

4.
生态农业的效益包括经济、生态和社会三方面的各项指标。衡量生态农业的效益,不能只看某一两项指标,而要从系统整体的结构和功能去看,因此需要进行综合的评价。对三大效益的评价,要有可比的量化标准,评价指标的变量来源应在现有统计制度的基础上,易于调查、测定、补充,使之具有较强的可操作性,才有普遍的应用意义。  相似文献   

5.
为弄清大渡河流域电站建设对虎嘉鱼等5种保护鱼类的影响情况,探索适宜的保护措施,在流域枯水和丰水期分别选择了电站建设上下游6个有代表性的断面采集水样,采用电感耦合等离子发射光谱法等方法测定了重金属元素等16个指标,用单因子和综合指数评价法对电站上下游水质进行了对比评价;采用实地调查的方法调查了5种保护鱼类在近10年间种群数量的变化趋势。结果表明:电站建设对水质综合影响指数在1.64—1.82之间,影响严重;5种保护鱼类种群数量近10年间急剧下降,目前已为未见或罕见。  相似文献   

6.
《环境教育》2006,(11):5-7
在自然保护区发展五十周年纪念大会上,国家环保总局局长周生贤指出,要以科学发展观为统领,以提高自然保护区管理水平和保护效果为重点,坚持严格保护、科学管理、合理利用、持续发展的方针,有效保护自然资源,维护国家生态安全,促进人与自然和谐,保障经济社会全面协调可持续发展。周生贤指出,实践证明,建设自然保护区是近代人类文明发展的一个伟大创举,是人类面对生存挑战做出的明智选择。1956年,经国务院批准,中国科学院与广东省人民政府建立了鼎湖山自然保护区,这是我国建立的第一个自然保护区。五十年来,在党中央、国务院的亲切关怀下,经过…  相似文献   

7.
在借鉴国内外森林生态系统服务功能基本分析方法的基础上,对庐山自然保护区的森林生态系统的价值进行了评估,得出庐山森林生态系统的服务总价值约为114221.26万元/a.其中,直接经济价值70855万元/a,占总价值的62.03%;生态价值为43357.26万元/a,占总价值的37.97%.此外,庐山的景观游憩价值63600万元/a,占总价值的55.68%,在庐山森林生态系统服务价值中占主要地位.因此,庐山森林生态系统服务功能的保护开发,一方面体现在森林生态功能的保护开发,另一方面要促进生态系统保护和旅游资源开发的有机结合.  相似文献   

8.
《油气田环境保护》2012,22(2):73-74
<正>0前言为贯彻《中华人民共和国环境保护法》,规范生物多样性评价指标和方法,掌握并了解全国和各地生物多样性的现状、空间分布及变化趋势,明确全国和各地生物多样性保护重点,整体上提高我国生物多样性保护的管理能力,  相似文献   

9.
自然保护区在维持生态平衡、保护濒危物种、开展科学研究以及促进社会主义物质和精神文明等方面发挥着越来越重要的作用。山西省现有4个省级以上森林和野生动物自然保护区,当前这些保护区存在的主要问题有:①管理体制不健全。目前我省已建的保护区,均隶属于森林经营局领导,由于森林经营局的中心任务是从事林业经营活动,因此造成了管理混乱。②科研人员严重不足,使保护区的科研工作难于深入开展而失去了生命力。③未充分发挥各方面的积极性。目前我省各保护区事业费由省林业厅划拨;业务性指导由省保护区管理站负责;人、财、物由森林经营局统管,形成内部条块分割现象,挫伤了各方面的积极性。④宏观失控,微观封闭。从我省已建的保护区来看,保护对象各有侧重;从全省角度看,它又是一个完整的体系。但现行管理体制  相似文献   

10.
国家可持续发展实验区政策实施效果评价研究   总被引:1,自引:1,他引:0  
探索科学有效的评价方法,量化评价实验区建设的实施效果,对推进国家可持续发展实验区与国家可持续发展议程创新示范区战略,进一步提升实验区与示范区建设质量具有重要意义。本文将创新驱动维度引入可持续发展评价体系,构建了包含三级指标、四大维度、五种权重方案的实验区可持续发展水平评价框架,使用熵值法与主观赋权法、灰色聚类法、序参量法三类各有侧重又相互关联的方法,以25个地级市型实验区及其所在省份2013—2016年发展成果的量化评估,探究了实验区政策的实施效果。本文使用的三类评价方法在实验区政策效果评价方面具有一致性,研究发现:各实验区可持续发展水平均有显著提升;与所在省份相比,实验区整体上跳出了传统发展空间锁定的发展模式,发展协调度提升更为显著;实验区在某些维度下可持续发展水平进步速率更快,但仍有部分实验区尚未探究出环境、经济等多维度协调发展的路径。  相似文献   

11.
The long‐term integrity of protected areas (PAs), and hence the maintenance of related ecosystem services (ES), are dependent on the support of local people. In the present study, local people's perceptions of ecosystem services from PAs and factors that govern local preferences for PAs are assessed. Fourteen study villages were randomly selected from three different protected forest areas and one control site along the southern coast of Côte d'Ivoire. Data was collected through a mixed‐method approach, including qualitative semi‐structured interviews and a household survey based on hypothetical choice scenarios. Local people's perceptions of ecosystem service provision was decrypted through qualitative content analysis, while the relation between people's preferences and potential factors that affect preferences were analyzed through multinomial models. This study shows that rural villagers do perceive a number of different ecosystem services as benefits from PAs in Côte d'Ivoire. The results based on quantitative data also suggest that local preferences for PAs and related ecosystem services are driven by PAs' management rules, age, and people's dependence on natural resources.  相似文献   

12.
Livelihoods of people living in many protected areas (PAs) around the world are in conflict with biodiversity conservation. In Mexico, the decrees of creation of biosphere reserves state that rural communities with the right to use buffer zones must avoid deforestation and their land uses must become sustainable, a task which is not easily accomplished. The objectives of this paper are: (a) to analyze the conflict between people’s livelihoods and ecosystem protection in the PAs of the Sierra Madre de Chiapas (SMC), paying special attention to the rates and causes of deforestation and (b) to review policy options to ensure forest and ecosystem conservation in these PAs, including the existing payments for environmental services system and improvements thereof as well as options for sustainable land management. We found that the three largest PAs in the SMC are still largely forested, and deforestation rates have decreased since 2000. Cases of forest conversion are located in specific zones and are related to agrarian and political conflicts as well as growing economic inequality and population numbers. These problems could cause an increase in forest loss in the near future. Payments for environmental services and access to carbon markets are identified as options to ensure forest permanence but still face problems. Challenges for the future are to integrate these incentive mechanisms with sustainable land management and a stronger involvement of land holders in conservation.  相似文献   

13.
Croatia, like many other transition countries has undergone radical changes in its nature protection models. This paper discusses a historical overview, present situation and future possibilities for nature conservation in Croatia. A conservative top-down approach to nature protection was applied in the past in Croatia and is now being replaced by a prevalent bottom-up approach. Social context is crucial to introducing participatory conservation, therefore special concern is given to the perception of the local population towards protected area management in Istria as a case study in Croatia. Survey data were used to assess the conservation knowledge of local populations and their perception towards Protected Areas (PAs), leadership activities and management authorities in Istria County. This paper examines the perceptions of 313 residents living in and around six natural PAs located in Istria. The results revealed a moderate general knowledge about PAs in Istria and environmental issues, and a low awareness of institutions managing PAs, eagerness to participate in the activities of PAs and general support for the conservation cause. Understanding the perception of local residents enables the creation of feasible, long-term strategies for the implementation of participatory conservation. The research identifies the need for greater human, technical and financial efforts to strengthen the management capabilities of local agencies responsible for PAs. The process of participatory conservation optimization in Croatia is underway and world experiences must be observed in order to create a congruent, site-specific model with the best possible results.  相似文献   

14.
Accurate monitoring of the effectiveness of protected areas (PAs) in decreasing deforestation is increasingly important given the vital role of forest protection in climate change mitigation. Recent studies on PA effectiveness have used remote-sensing imagery to compare deforestation rates within PAs to surrounding areas. However, remote-sensing data used in isolation provides limited information on the factors contributing to effectiveness. We used landscape-modelling techniques to estimate the effectiveness of ten PAs in Madre de Dios, Peru. Factors influencing PA effectiveness were investigated using in situ key-informant interviews. Although all of the PAs studied had positive effectiveness scores, those with the highest scores were ecotourism and conservation concessions, where monitoring and surveillance activities and good relations with surrounding communities were reported as possible factors in decreasing deforestation rates. Native community areas had the lowest scores, with deforestation mainly driven by internal resource use and population growth. Weak local governance and immigration were identified as underlying factors decreasing the effectiveness of protection, whereas good relations with surrounding communities and monitoring activity increased effectiveness. The results highlight the need to combine remote sensing with in situ information on PA management because identification of drivers and deterrents of deforestation is vital for improving the effectiveness of protection.  相似文献   

15.
A commonly overlooked aspect of conservation planning assessments is that wildlife managers are increasingly focused on habitats that contain non-native species. We examine this management challenge in the Gila River basin (150,730 km2), and present a new planning strategy for fish conservation. By applying a hierarchical prioritization algorithm to >850,000 fish records in 27,181 sub-watersheds we first identified high priority areas (PAs) termed “preservation PAs” with high native fish richness and low non-native richness; these represent traditional conservation targets. Second, we identified “restoration PAs” with high native fish richness that also contained high numbers of non-native species; these represent less traditional conservation targets. The top 10 % of preservation and restoration PAs contained common native species (e.g., Catostomus clarkii, desert sucker; Catostomus insignis, Sonora sucker) in addition to native species with limited distributions (i.e., Xyrauchen texanus, razorback sucker; Oncorhynchus gilae apache, Apache trout). The top preservation and restoration PAs overlapped by 42 %, indicating areas with high native fish richness range from minimally to highly invaded. Areas exclusively identified as restoration PAs also encompassed a greater percentage of native species ranges than would be expected by the random addition of an equivalent basin area. Restoration PAs identified an additional 19.0 and 26.6 % of the total ranges of two federally endangered species—Meda fulgida (spikedace) and Gila intermedia (Gila chub), respectively, compared to top preservation PAs alone—despite adding only 5.8 % of basin area. We contend that in addition to preservation PAs, restoration PAs are well suited for complementary management activities benefiting native fishes.  相似文献   

16.
Protected areas (PAs) are cornerstones of biodiversity conservation, but small parks alone cannot support wide-ranging species, such as the tiger. Hence, forest dynamics in the surrounding landscapes of PAs are also important to tiger conservation. Tiger landscapes often support considerable human population in proximity of the PA, sometimes within the core itself, and thus are subject to various land use activities (such as agricultural expansion and road development) driving habitat loss and fragmentation. We synthesize information from 27 journal articles in 24 tiger landscapes to assess forest-cover dynamics in tiger-range countries. Although 29% of the PAs considered in this study have negligible change in overall forest cover, approximately 71% are undergoing deforestation and fragmentation. Approximately 58% of the total case studies have human settlements within the core area. Most changes—including agricultural expansion, plantation, and farming (52%), fuelwood and fodder collection (43%), logging (38%), grazing (38%), and tourism and development (10%)—can be attributed to human impacts largely linked to the nature of the management regime. This study highlights the need for incorporating new perspectives, ideas, and lessons learned locally and across borders into management plans to ensure tiger conservation in landscapes dominated by human activities. Given the increasing isolation of most parks due to agricultural, infrastructural, and commercial developments at the periphery, it is imperative to conduct planning and evaluation at the landscape level, as well as incorporate multiple actors and institutions in planning, instead of focusing solely on conservation within the PAs as is currently the case in most tiger parks.  相似文献   

17.
In the present study, forest biomass (fuelwood, leaf fodder, leaf-litter and non-timber forest products) consumption patterns have been evaluated in the villages of Govind Wildlife Sanctuary, Uttarakhand, Western Himalaya, India. The average fuelwood consumption in the selected villages was estimated at 3.14 kg/capita/day and its energy equivalent was found 52.74 MJ/capita/day. The average leaf fodder and leaf-litter consumption was estimated at 2.70 and 2.40 kg/unit/day, respectively, and the same pattern was estimated for energy equivalent. People's perception on impacts of conservation measures and resources utilization rights were also analysed. Our results emphasized the need for regular assessment of forest resources, particularly in protected areas, where access to natural resources have been denied due to legal restrictions. The study could be a pilot to strengthen the conservation measures across the protected area network by understanding the dynamics of anthropocentric activities and their subsequent impacts on forest resources.  相似文献   

18.
Geographic information systems and remote sensing technologies have become an important tool for visualizing conservation management and developing solutions to problems associated with conservation. When multiple organizations separately develop spatial data representations of protected areas, implicit error arises due to variation between data sets. We used boundary data produced by three conservation organizations (International Union for the Conservation of Nature, World Resource Institute, and Uganda Wildlife Authority), for seven Ugandan parks, to study variation in the size represented and the location of boundaries. We found variation in the extent of overlapping total area encompassed by the three data sources, ranging from miniscule (0.4 %) differences to quite large ones (9.0 %). To underscore how protected area boundary discrepancies may have implications to protected area management, we used a landcover classification, defining crop, shrub, forest, savanna, and grassland. The total area in the different landcover classes varied most in smaller protected areas (those less than 329 km2), with forest and cropland area estimates varying up to 65 %. The discrepancies introduced by boundary errors could, in this hypothetical case, generate erroneous findings and could have a significant impact on conservation, such as local-scale management for encroachment and larger-scale assessments of deforestation.  相似文献   

19.
High densities of people living around protected areas (PAs) in South Asia require management strategies to balance conservation goals and livelihood needs. Based on a survey of 777 households around five PAs in India and Nepal, this paper provides a comparative perspective of Indian and Nepali households’ views of protected area benefits and costs, their attitude toward conservation in general, and attitude toward protected area staff. Results indicate mixed responses towards tourism, varying from very favorable in Nepal to less favorable in India. The majority (81%) held positive attitudes towards the existence and importance of PAs but had negative perceptions of PA staff (69%). Most residents perceived benefits from access to fuel wood, fodder and other PA resources including benefits from tourism, while crop and livestock losses from wildlife were the main costs. Households overall positive attitudes towards the PAs and conservation despite high losses from living around PAs suggests that local residents may support conservation if their livelihood needs are met. Comparisons of household attitudes and perceptions suggest that locally based strategies rather than top-down approaches are likely to be more effective. Extending PA benefits to smaller landholders, households that are highly resource-dependent or experiencing higher income losses from human-wildlife conflicts, and less educated residents are particularly important to balance costs and losses from living around protected areas.  相似文献   

20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号