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采用层次分析法(AHP),选取资源要素价值、生态环境质量和开发建设条件3个综合指标及19个项目指标,构建了圣堂山生态旅游资源评价指标体系,并对各个层次和各个项目指标进行权重确定和评分计算。通过评分计算,圣堂山生态旅游资源综合评分为9.13分,其中:资源要素价值得分6.74,生态环境质量得分1.65,开发建设条件得分0.74。表明圣堂山生态旅游资源质量优良,开发潜力巨大,但也存在区位优势不足、交通条件较差等不利条件。提出将瑶族村屯为主的乡村旅游与景区观光、休闲旅游相结合,以优越的生态环境为开发主导要素,改善交通条件、注重旅游产品的差异化等开发建议。 相似文献
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在对辽宁6个森林类国家级自然保护区生态旅游资源调查的基础上,通过层次分析法将其生态旅游资源的评价分为保护区特征、自然景观价值、科研教育价值和社会经济价值4个方向和14个评价因子,进一步确定各因子的权重,从而建立其评价模型.在评价模型的基础上,对位于辽宁省范围之内的6个森林类国家级自然保护区生态旅游资源进行综合评价.结果显示,综合价值最高的是白石砬子国家级自然保护区,其评价得分为82.14分,其他依次分别为老秃顶子国家级自然保护区(80.44分)、医巫闾山国家级自然保护区(78.13分)、仙人洞国家级自然保护区(75.52分)、努鲁儿虎山国家级自然保护区(73.6分)、海棠山国家级自然保护区(72.83分). 相似文献
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在介绍兰坪云岭省级自然保护区森林生态旅游资源的基础上,依据《中国森林公园风景资源质量等级评定》(GB/T18005-1999),对保护区的各类旅游资源进行了评价.结果认为,保护区及其周边有丰富的自然及人文景观资源,生态旅游质量等级综合评分值为40.49分,达到一级标准,具有发展森林生态旅游的良好物质基础. 相似文献
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综合考虑轿子山区域的生态旅游资源特征和所处环境,选取了资源自身特性、开发建设条件和生态环境质量三个二级综合指标,以及19个三级项目指标,构建了轿子山生态旅游资源评价指标体系,并采用层次分析法(AHP)对各个层次和各个项目指标进行权重确定和评分计算。通过评分计算,轿子山生态旅游资源综合评分为9.01分,可以看出,轿子山生态旅游资源质量优良,开发潜力巨大。在众多影响轿子山生态旅游资源质量的指标中,资源奇特度、资源多样度和资源吸引度等三项指标对资源综合质量贡献较大,而影响轿子山生态旅游发展的短板则是较差的内部交通和基础设施条件。最后对轿子山发展生态旅游给出了一些建议。 相似文献
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森林类自然保护区生态旅游资源综合评价——以黑里河国家级自然保护区为例 总被引：1，自引：0，他引：1
《河北林果研究》2015,(2)
为了提升黑里河保护区的竞争力,从生态旅游的发展背景出发,对森林生态旅游评价与规划的内涵进行研究与总结,选取旅游资源质量、区域环境质量及保护区开发利用条件作为考核指标,以内蒙古黑里河国家级自然保护区为案例进行实证研究,构建森林类自然保护区生态旅游资源评价指标体系。通过资源调查与评价发现,该保护区具有森林资源丰富、区位优势明显、客源市场开发潜力大等优势条件,也存在旅游服务设施不完善、适游期较短等发展限制因素。 相似文献
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在分析浙江古田山国家级自然保护区的地理区位、旅游区位和交通区位条件的基础上,从动植物种类多样、稀有,动植物物种典型且原始,自然景观与环境价值高,生态产业品牌潜力巨大等生态旅游资源以及乡村旅游资源、养生休闲资源和人文旅游资源等方面分析了其开展生态旅游的可行性,并对周边区域旅游竞合条件等进行了综合分析评价,为保护区开展科学有效的生态旅游提供参考。 相似文献
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《西部林业科学》2017,(5)
自然保护区生态旅游健康度是其克服各种阻力,维持生态旅游健康运营的能力。本文以自然保护区生态旅游健康度的概念为指导,采用层次分析法(AHP)构建了包括横向组成结构、纵向发展阶段、现状动态特征和综合协调能力4个维度、16个方向、58个指标的评价体系,并且通过问卷调查确定了各个指标的权重。为了保证评价的准确性,本文对58个具体指标采用了多主体评价的方式,获得每个指标的评价结果,再对58个指标的评价结果进行逐层分析,最终获得总体评价结果。对白石砬子、海棠山、医巫闾山3个国家级自然保护区生态旅游健康度的评价结果显示:白石砬子、医巫闾山2个自然保护区的生态旅游健康度处于"亚健康"状态,还有很大的改进空间;海棠山自然保护区生态旅游的健康度处于"不健康"状态,亟需改进。层次分析法建立的评价体系中的58个指标对自然保护区生态旅游健康度的影响程度各不相同,其中生态旅游资源贡献最大,加上保护功能发挥程度、环境条件、保护工作、市场需求度、与当地交通和旅行社的协调程度共7个指标影响程度占58个指标权重的39.202%,是评价一个自然保护区生态旅游健康度的核心指标。 相似文献
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由于沾益海峰自然保护区地理位置特殊，使保护区形成了高原和峡谷两大部分，造就了山地、湿地、天坑、洞穴、七彩峡谷等生态旅游资源和独特的喀斯特旅游资源。文章对旅游资源进行了分析评价，认为其旅游资源丰富，且独具特色，区位优势较为显著。提出了旅游接待区、喀斯特地区景观游、露营康乐游、科普探险游、七彩峡谷漂流、民俗风情游等生态旅游产品开发。 相似文献
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选取甘肃连城国家级自然保护区为研究对象,通过调查了解保护区天然林资源保护工程二期实施情况,从生态、经济和社会效益3个层面选取15个评价指标,建立评价指标体系,采用层次分析法(AHP)对甘肃连城国家级自然保护区天然林资源保护工程二期效益进行综合评价。结果表明,在综合评价中权重值表现为：生态效益>社会效益>经济效益,而在15个评价指标中,森林覆盖率权重值最大,生物多样性和森林蓄积量权重值略次之;职工年收入增长率、自然资源开发程度、社会知名度权重值最小,对综合评价的影响较小;三大效益评价值相差较大,生态效益评价结果为一级,经济效益评价结果为四级,社会效益评价结果为一级。评价结果表明,甘肃连城国家级自然保护区天保工程效益综合评价结果为一级,保护区天保工程实施成效显著。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(5):427-435
In Scandinavia, moose (Alces alces L.) sometimes cause severe browsing damage to economically-important pine. Moose-vehicle accidents have spurred construction of fences along roads, and these may interfere with moose migration between summer and winter ranges, or the road alone may be a barrier. If this happens and moose build up along roads, landowners may suffer economically. Therefore, this study investigated whether roads, fences or other factors influence the use of young pine stands by moose. Eighty stands along roads in northern Sweden were evaluated in which individually-browsed branches were counted on 9972 pines. Moose browsing was not significantly related to birch (Betula pendula Roth, B. pubescens Ehrh.) density, nor did it differ between pines (Pinus contorta Douglas or P. sylvestris L.). However, increased pine density, site productivity and proximity to a highway were associated with increased browsing. Further large-scale studies are needed to understand moose habitat selection and the effects of roads. 相似文献
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《Scandinavian Journal of Forest Research》2012,27(3):206-217
The root systems of 2-yr-old Picea glauca, Picea mariana and Pinus banksiana seedlings were submitted to various frost temperatures during an artificial frost to induce different levels of root damage. Frost-damaged and control seedlings were placed in a greenhouse under high and low soil moisture regimes. Seedling growth and physiology were evaluated periodically. Seedling survival was reduced when root damage reached levels of 60-80%. Root systems of all three species showed partial to total recovery by the end of the experiment. In general, root freezing damage caused reductions in seedling growth, with these reductions becoming less significant over time. Root damage had little to no effect on black spruce and jack pine seedling physiology, while white spruce CO 2 uptake decreased with increasing root damage. Shoot nitrogen content of all three species decreased slightly with increasing root damage. 相似文献
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《Scandinavian Journal of Forest Research》2012,27(1):53-61
This study investigated the stand structure in pine, spruce and deciduous forests in the border district of Finland and Russia. A total of 46 mature forest stands was selected as pairs, the members of each pair being as similar as possible with respect to their forest site type, age, moisture and topography. The stands were then compared between the two countries by means of basal areas and number of stems. The proportions of dominating tree species were 2-12% lower, and correspondingly the proportions of secondary tree species higher, in Russian forests. The density of the forest stock was also higher in each forest type in Russia. The forests in the two countries differed most radically in terms of the abundance of dead trees. The amount was two to four times higher in Russian deciduous and spruce forests, and in pine forests the difference was 10-fold. The stand structures indicated that Russian coniferous stands, in particular, were more heterogeneous than intensively managed pine and spruce stands in Finland. 相似文献
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《Scandinavian Journal of Forest Research》2012,27(1):15-27
The root collar diameter and the height:diameter ratio are of particular importance in container-grown seedlings where a high density in the containers may produce spindly seedlings. Temperature regimes and light quality are known to affect plant growth. The aim of this study was to identify responses in Picea abies (L.) Karst. seedlings grown with light providing different red:far-red ratios and under temperature regimes with alternating day (DT) and night temperature (NT) from negative (DT < NT) to positive (DT > NT) difference (DIF) between DT and NT. Experiments were conducted in controlled environment chambers and in a daylight phytotron. Only limited thermoperiodic responses appeared in P . abies seedlings with respect to seedling height and dry weight accumulation. The formation of terminal buds, however, was clearly delayed in seedlings grown at negative DIF. The results indicate a requirement for day extension light that is high in far-red, to prevent terminal bud formation under natural short-day conditions. An extended study should be conducted to clarify the minimum level of light intensity and the optimal light quality needed to prevent terminal bud formation under natural short-day conditions. 相似文献
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本文分析了CAD在设计中引起的正面和负面影响,并进行了系统的阐述,从而使设计者在应用中能够保持客观的态度。 相似文献
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《Scandinavian Journal of Forest Research》2012,27(2):131-138
The effects of soil scarification (mounding), slash removal and clear-cut age on the natural regeneration in clear-cuts was evaluated using data from four sites in southern Sweden. The treatments were carried out during a good seed and establishment year for birch ( Betula pubescens Ehrh. and B. pendula Roth). Scarification had the strongest positive effect on the density of naturally regenerated seedlings, especially in birch, but also in pine ( Pinus sylvestris L.) and spruce [ Picea abies (L.) Karst]. Slash removal had a positive effect on birch density. No statistically significant effect of clear-cut age was found. In addition, no statistically significant interactions between clear-cut age and scarification or slash removal were found. The ingrowth of field vegetation was the fastest in areas that were not scarified, less rapid in areas scarified on old clear-cuts, and the slowest after scarification in fresh clear-cuts. In conclusion, it may be possible to control the density of birch during a good establishment year for birch. If birch is desired, the best combination of treatments is to remove the slash and scarify; otherwise, these treatments should be avoided. 相似文献
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《Scandinavian Journal of Forest Research》2012,27(5):472-479
Based on an enquiry, risk perception among non-industrial private forest owners is described in relation to climate change and forestry hazards. Of the respondents, 11% took action to remedy the effects of climate change. Out of a given set, hazards were ranked according to each respondent's experience of recent substantial financial loss to the estate and in relation to his or her willingness to make investments aimed at risk reduction. For each hazard, the respondent assessed the risk in four classes ranging from very high to negligible risk. Six hazards were considered most problematic in all three aspects: browsing damage, falling timber prices, damage by wind, spruce bark beetle, root rot and pine weevil. A majority of the respondents claimed to take action to reduce the risk associated with at least one hazard, while 35% did not know whether they did. Excluding climate change, the need for decision support was the largest in relation to damage by wind owing to a combination of perceived high risk and a high level of ignorance in relation to whether risk-reducing measures were taken. 相似文献
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Srisuda Thippayarugs Banyong Toomsan Patma Vityakon Viriya Limpinuntana Aran Patanothai Georg Cadisch 《Agroforestry Systems》2008,72(2):137-148
In situ produced plant residues contain a mixture of different plant components of varying quality. To assess synergistic
or antagonistic interactions occurring during the decomposition and mineralization of such mixtures, individual plant parts
(stems, leaves, leaf litter and roots) or the mixture of stems, leaves and leaf litter of the agroforestry species pigeonpea
(Cajanus cajan) or of crop residues of peanut (Arachis hypogaea) or of the weed hairy indigo (Indigofera hirsuta) were incubated in pots for 19 weeks. Periodically, remaining plant residues were sieved out (>2 mm), weighed and N content
as well as soil mineral N determined. Above- and below-ground residues of peanut decomposed fastest and showed the largest
N release in agreement with their high N concentration and low-acid detergent fibre (ADF) : N ratio. Hairy indigo was hypothesized
to be of lower quality than pigeonpea because of its high-polyphenol content. However, it decomposed faster than pigeonpea,
largely because of the higher N and lower lignin concentration of its components. Ranking of individual plant components for
N mineralization resulted in the following pattern, leaves > leaf litter > roots > stems. In mixtures of the different plant
components a similar species order in decomposition was obtained, e.g. peanut > hairy indigo > pigeonpea. The amount of N
released from the mixture was dominated by stem material that comprised 46–61% of the mixture. The interactions in mixtures
were relatively small for peanut (generally high-quality components) as well as for pigeonpea (low proportion of high-quality
components, i.e. N rich leaf material). However, a positive interaction occurred during later stages of N mineralization in
the mixture of hairy indigo as it had a significant proportion of N rich components and absence of highly reactive polyphenols.
Thus, for plants with low to intermediate chemical quality attributes, manipulating plant composition (e.g. by varying harvest
age, affecting stem and leaf proportions) will be important to obtain significant interactions during decomposition when its
components are mixed. 相似文献
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A. Rigueiro-Rodríguez M. R. Mosquera-Losada E. Gatica-Trabanini 《Agroforestry Systems》2000,48(3):245-256
The use of organic waste materials such as milk sewage as an organic fertilizer could have the dual advantages of organic-waste
disposal and reduced dependence on inorganic fertilizers. The effects of fertilization with (1) conventional mineral fertilization,
(2) milk sewage sludge at 40 kg N ha−1 target rate and (3) no fertilization on pasture production and tree growth were examined in an experiment consisting of two
pasture mixtures under a one-year-old Pinus radiata plantation with a density of 2500 trees ha−1. The two pasture mixtures were: (1) Dactylis glomerata L. var. saborto (25 kg ha−1) + Trifolium repens L. group Ladino (4 kg ha−1) + Trifolium pratense L. var. Marino (1 kg ha−1); (2) Lolium perenne L. var. Tove (25 kg ha−1) + Trifolium repens L. group Ladino (4 kg ha−1) + Trifolium pratense L. var. Marino (1 kg ha−1). The experiment began in the spring of 1995 using a randomized block design with three replicates in Castro Riberas de Lea
(Lugo, Galicia, north-western Spain). Plot size was 12 × 8 m2, with a 1 m buffer strip between plots. Two-year data showed that fertilization with either material had a positive effect
on pasture production, with no significant difference between the two fertilization treatments. Tree growth in the milk sewage
sludge plot was significantly higher than in the control plots. Inorganic fertilization increased pasture production, but
affected tree growth negatively. The results show that milk sewage sludge could be used as a fertilizer in silvo-pastoral
systems.
This revised version was published online in June 2006 with corrections to the Cover Date. 相似文献