共查询到18条相似文献，搜索用时 125 毫秒
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在分析了罗山县林业生产现状和存在问题的基础上,论述了该县林业发展的有利条件,探讨了林业发展的前景,并提出了该县应从根本上转变对林业的认识等发展林业的对策 相似文献
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贵州"数字林业"建设分析 总被引：1，自引：0，他引：1
针对信息技术的发展和林业发展的应用需要,对“数字林业”的概念、发展现状及存在问题进行了阐述。根据当前贵州省林业管理实际,遵循数字化林业建设的原则,提出贵州省数字林业系统建设的目标、内容和系统设计原则。 相似文献
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海南岛森林资源的特点及林业可持续发展对策 总被引：3，自引：0，他引：3
分析了海南岛森林资源的特点,指出林业生产存在的主要问题。根据其特点,构建森林资源可持续经营管理的基本模式,并对海南林业可持续发展提出相应的对策。 相似文献
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党的十六大报告提出 ,要继续深化行政管理体制改革 ,建立行为规范、运转协调、公正透明、廉洁高效的行政管理体制。在新一轮机构改革中 ,国家遵循什么原则调整林业行政机构呢 ?中央最近作出了重要决策。中共中央、国务院颁发的《关于加快林业发展的决定》明确指出 :“根据加快林业发展的需要 ,强化林业行政管理体系 ,加强各级政府的林业行政机构建设”。这是中央文件第一次就林业行政机构问题作出明确具体的规定 ,也是鲜为少有的强调行业机构建设的文件。说明林业机构建设摆到了国家政权建设和公共服务体系建设的突出位置 ,强化林业行政机构… 相似文献
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邵阳市旅游资源类型与旅游经济开发 总被引：5，自引：1，他引：4
文章分类概述了邵阳市旅游资源及其开发条件,提出了邵阳市域旅游经济开发的构想,即搞好整体规划,突出开发重点,发展交通,开辟旅游线路,加速培育人才,广开投资门路。 相似文献
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邵阳竹文化生态旅游开发 总被引：3，自引：0，他引：3
邵阳市竹文化具有悠久的历史、优美的自然景观、意味无穷的竹景文化艺术、源远流长的竹工艺文化和绿色饮食文化等特色。将竹文化和生态旅游结合形成一种新型特色旅游模式加以研究开发,对地方旅游经济发展颇有指导意义。文中阐述竹文化生态旅游的概念、基本特征和意义,具体分析了邵阳发展竹文化生态旅游的优势,提出了邵阳竹文化生态旅游开发以欣赏观光型、休闲体验型和文化商贸型为主的基本模式及应采取的相应对策。 相似文献
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生态足迹是近年来测度生态可持续发展的一种定量方法,也是一种用来度量人类活动对生态系统压力和响应的一条新途径。通过对邵阳市2000—2004年的生态足迹进行了定量计算,结论为：邵阳市2000～2004年人均生态足迹均高于期间的人均生态承载力且每年的生态赤字平均为-0．331hm^2;从生态足迹结构组成来看,邵阳市消费集中在粮食和能源消费上;从时间变化来看,邵阳市的人均生态足迹、人均生态承载力、总生态足迹、总生态承载力、生态赤字均呈减少趋势。并利用GM（1,1）模型对邵阳市的生态足迹和生态承载力进行了建模预测,试图为邵阳市相关部门进行人口增长的控制、自然资源利用等决策提供参考。 相似文献
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欠发达地区社区旅游研究--以湖南省邵阳市为例 总被引：10，自引：0，他引：10
文章探讨了社区旅游的特点,社区旅游开发的基本原则及欠发达地区开展社区旅游的重要性,提出了典型的欠发达地区－邵阳市社区旅游开发的措施。 相似文献
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基于遥感与GIS的黄土丘陵区生态监测系统研究——以定西地区4县为例 总被引：11，自引：2，他引：9
基于遥感和GIS技术建立的甘肃中部黄土丘陵重点地区生态环境监测系统的初步监测结果表明,近10a来定西4县黄土丘陵区土地利用/土地覆盖变化显著。其中:增加最为显著的是菜地和果园,分别增加了275%和164%,说明试验区农业产业结构有较大的调整,即从单一的粮食生产转为与经济作物相结合的模式;减少最为显著的是河流和宜林宜草荒地,分别减少了68%、63%和67%,说明该地区对未利用土地的开发程度较大;该地区多年来推行水土保持和退耕还林工作,所以混交林和防护林增加的幅度较大,分别增加了43%和46%;该地区的连续建筑用地、分散建筑用地和交通用地都有较大幅度的增加,分别增加了34%、13%和21%,说明该地区经济的迅速发展和城市化的趋势。遥感与GIS为生态监测系统的建立与应用提供了丰富的数据源和强大的数据处理手段。 相似文献
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African dry forests provide non-timber forest products (NTFPs) of high commercial value, such as frankincense and gum arabic. Nonetheless, their deforestation and conversion to croplands is intensifying. Expected higher financial return from crop production is a main driver of conversion, but research supporting this underlying claim is scarce. We compared the financial returns for two crop production options (sesame and cotton) and forest use, in a dry forest area known for its frankincense production in northern Ethiopia. Net revenue was highest for sesame and lowest for cotton agricultural use. The forest based revenue was intermediate. The revenues from the crop production options were more sensitive to a range of uncertainties than the forest land use. Our results show that forest land use that includes commercial NTFPs is financially competitive to some commercial crop options and offers returns of better reliability. The hypothesis that forest based revenues are lower than crop based ones is not supported by our results. Therefore, the continued deforestation of dry forests cannot be explained by lower returns alone, but other factors such as awareness, market access, property right and institutional issues may also play a role to drive deforestation and conversion of dry forests to croplands. 相似文献
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最优增长路径下的中国碳排放估计 总被引：9，自引：0，他引：9
从能源消费、水泥生产和森林碳汇3 个方面对中国未来的碳排放进行了较为全面的估计。其中,能源消费碳排放是在能源-经济框架下利用经济动力学模型对最优经济增长路径下的能源需求进行预测得到的,同时考虑了能源结构的演化及不同能源品种在碳排放系数上存在的差异;水泥生产碳排放则是在对水泥产量预测的基础上进行的,认为水泥产量与城市化进程存在一定的联系,而城市化进程遵循“S曲线”发展规律;森林碳汇是通过引入CO2FIX模型,分别对原有森林与新增可造林的固碳能力进行估算,最终合成了中国未来的净碳排放曲线。结果发现,能源消费碳排放在2031 年达到高峰,为2637 MtC,对应的人均GDP低于OECD国家的实证经验;人均排放高峰出现在2030 年,为1.73 tC/人,远低于美国欧盟和日本2006 年水平;水泥生产碳排放增长放缓,2050 年控制在254 MtC左右,占工业总排放的12%;森林碳汇至2050 年可累计吸收6806.2 MtC,年吸收量逐渐下降;净排放也于2033 年达到峰值,为2748 MtC。 相似文献
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Africa's Albertine Rift region faces a juxtaposition of rapid human population growth and protected areas, making it one of the world's most vulnerable biodiversity hotspots. Using satellite-derived estimates of forest cover change, we examined national socioeconomic, demographic, agricultural production, and local demographic and geographic variables, to assess multilevel forces driving local forest cover loss and gain outside protected areas during the first decade of this century. Because the processes that drive forest cover loss and gain are expected to be different, and both are of interest, we constructed models of significant change in each direction. Although rates of forest cover change varied by country, national population change was the strongest driver of forest loss for all countries – with a population doubling predicted to cause 2.06% annual cover loss, while doubling tea production predicted to cause 1.90%. The rate of forest cover gain was associated positively with increased production of the local staple crop cassava, but negatively with local population density and meat production, suggesting production drivers at multiple levels affect reforestation. We found a small but significant decrease in loss rate as distance from protected areas increased, supporting studies suggesting higher rates of landscape change near protected areas. While local population density mitigated the rate of forest cover gain, loss was also correlated with lower local population density, an apparent paradox, but consistent with findings that larger scale forces outweigh local drivers of deforestation. This implicates demographic and market forces at national and international scales as critical drivers of change, calling into question the necessary scales of forest protection policy in this biodiversity hotspot. Using a satellite derived estimate of forest cover change for both loss and gain added a dynamic component to more traditionally static and unidirectional studies, significantly improving our understanding of landscape processes and drivers at work. 相似文献
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YAO Yonghui ZHANG Baiping ZHOU Chenghu LUO Yang ZHU Jun QIN Gang LI Baolin CHEN Xiaodong 《地理学报》2002,12(4):413-419
Remote-sensing and field data of Guizhou forest resources in 2000 are processed using ArcGIS, with the production of forest resource distribution map, forest age class structure map, and forest canopy distribution map. Analysis of these data shows that: (1) though there are multiple types of forest resources, forest coverage is low (only 25.27%, excluding sparse woodland, shrub and underage-forest); (2) the geographical distribution of forests is quite uneven, mainly in the southeast of the province and in Zunyi prefecture; (3) the zonal evergreen broad-leaved forests have been seriously destroyed, with striking secondary features, i.e., coniferous forest and shrubbery account for the greatest proportion of Guizhou forests; (4) the timber-forest is much larger in area than shelter-forest and economic forest; (5) young-and-middle aged forests are more widely distributed than near-and-over matured forest; and (6) the forest of Guizhou is not enough to effectively protect the environment of karst mountain areas of the province. 相似文献