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段河 《内蒙古林业调查设计》2012,(1):55-56
森林资源是森林资源开发项目物质基础,它们直接关系到投资项目建设规模和开发方案的确定。在森林资源开发项目的决策分析与评价阶段,应对森林资源条件予以评价,为项目建设规模、开发方案的设计和效益评价奠定基础。文章就森林资源评价的含义、产生及发展、特点和内容进行初步的探讨。 相似文献
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为了提高森林资源监管水平、实现森林资源精细化管理,活用森林资源管理平台,广西森林资源"一张图"与森林资源管理平台相结合,在森林资源管理、林业专题开发、森林资源监测、森林资源更新等方面发挥了重要作用,有效地解决了资源管理中图属分离、标准不一、更新困难等问题,为森林资源信息化管理提供了新手段。 相似文献
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森林资源开发是在保护好现有森林资源,维护生态平衡的基础上对森林资源的全面经营和合理利用,促进林业产业可持续发展的有效途径。因此不断总结和探索森林资源开发模式,充分运用先进的科学技术,挖掘森林资源的内在潜力,促进林业经济的可持续发展是当务之急。 相似文献
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本文是以开发森林资源的多功能效益为主要目标,以混合整数规划模型理论为基础,建立起的森林资源开发规划模型。这个模型在规划期内,以开发森林资源多功能(木材生产、旅游地、野生动物栖息地)效益的资金净现值最大为目标,以森林资源永续利用、旅游地和野生动物栖息地的保护,以及林区道路的建设和维护等项内容为约束方程而建立的。应用这个模型可以计算出不同规划段内森林资源的多功能效益、木材产量、营造林地面积、旅游地面积、动物栖息地面积及建设和维修林区道路长度等项值。为我国系统地开发森林资源,提供了一种行之有效的方法。 相似文献
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赵红梅 《云南林业调查规划设计》2007,32(6):102-105
维西傈僳族自治县系“三江并流”世界自然遗产的中心腹地，蕴藏着丰富的森林资源、生物资源、旅游资源以及水资源。但由于该县为边疆、民族、山区、贫困县，丰富的自然资源尚未被开发利用，为此提出了保护好现有森林资源、积极发展旅游业、大力开发水电资源、加大生物资源开发利用等发展建议。 相似文献
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维西傈僳族自治县系"三江并流"世界自然遗产的中心腹地,蕴藏着丰富的森林资源、生物资源、旅游资源以及水资源.但由于该县为边疆、民族、山区、贫困县,丰富的自然资源尚未被开发利用,为此提出了保护好现有森林资源、积极发展旅游业、大力开发水电资源、加大生物资源开发利用等发展建议. 相似文献
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修建东江水库对生态环境的影响和恢复对策 总被引：1，自引：0，他引：1
湖南省东江水库总水面面积160km^2，总库容81.2亿m^3，由于修建中的淹没指数高于全国其他水电站，造成了对森林植被的破坏，增加了单位面积上人口的压力、加剧了水土流失。为迅速恢复生态环境，提出了实行林业分类经营、实施绿色食品工程、增加环保投入等发展对策。 相似文献
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Forest resource conservation has been widely accepted as a key to sustain the local and regional economic development. The forest edges are affected by anthropogenic activities including deforestation, forest fragmentation, selective logging, extraction of non-timber forest products, collection of medicinal plants, recreations, hydroelectric projects and its associated developmental activities, which alter the biodiversity. The present study intends to evaluate the edge effect on vegetation structure and species compositions in the tropical forest ecosystems at Periyar Wildlife Sanctuary in the Western Ghats. High species richness (number of species) and Shannon’s diversity indices were observed in the site III (completely undisturbed forest) compared to site I (adjacent to the village/ edge of the forest, which is next to the teak plantation, severely disturbed forest) and site II (in between the undisturbed forest and moderately disturbed forest) while density of tree species showed greater value in site II. Single species such as Tectona grandis (IVI of 80) and Terminalia paniculata (IVI of 112) were the dominant tree species in site I and site II, respectively, whereas, in site III Terminalia bellirica, Bishofia javanica and Syzgium gardneri shared the dominance. Perturbation leads to alien plant invasion particularly Lantana camara, Eupatorium odoratum and Ageratum conizoides. Site II is at forest transition level because the site is dominated by both natural species as well as plantation species such as Tectona grandis. This site seems to be a buffer zone on natural forest and plantations. Further studies are required to analyse the real patterns of regeneration and dynamic change due to human impact by long term monitoring with the establishment of permanent plots. 相似文献
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水电站建设会改变河流形态使河流变的均一化和非连续化,影响了河流环境的生境多样性,从而影响到河流生态系统的生物多样性和水獭的生活。这些影响主要表现在：大坝对河流的分割作用、水库水位上升淹没周围生境、工程施工影响等方面。海南岛各个市县以个人和集体投资兴修小型水电站的热潮正在兴起,而海南各地区在对这些小型电站的建设与管理方面却存在问题。文章就水电站建设尤其是海南岛兴修的小型水电站对河流生态系统及水獭的影响进行评价,并结合今后水电资源的开发提出生物多样性及水獭保护存在的问题和对策。 相似文献
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Amazonian deforestation and global warming: carbon stocks in vegetation replacing Brazil''s Amazon forest 总被引：8，自引：0，他引：8
Philip M. Fearnside 《Forest Ecology and Management》1996,80(1-3):21-34
Carbon stocks in vegetation replacing forest in Brazilian Amazonia affect net emissions of greenhouse gases from land-use change. A Markov matrix of annual transition probabilities was constructed to estimate landscape composition in 1990 and to project future changes, assuming behavior of farmers and ranchers remains unchanged. The estimated 1990 landscape was 5.4% farmland, 44.8% productive pasture, 2.2% degraded pasture, 2.1% ‘young’ (1970 or later) secondary forest derived from agriculture, 28.1% ‘young’ secondary forest derived from pasture, and 17.4% ‘old’ (pre-1970) secondary forest. The landscape would eventually approach an equilibrium of 4.0% farmland, 43.8% productive pasture, 5.2% degraded pasture, 2.0% secondary forest derived from agriculture, and 44.9% secondary forest derived from pasture. An insignificant amount is regenerated ‘forest’ (defined as secondary forest over 100 years old). Average total biomass (dry matter, including below-ground and dead components) was 43.5 t ha−1 in 1990 in the 410 × 103 km2 deforested by that year for uses other than hydroelectric dams. At equilibrium, average biomass would be 28.5 t ha−1 over all deforested areas (excluding dams). These biomass values are more than double those forming the basis of deforestation emission estimates currently used by the Intergovernmental Panel on Climate Change (IPCC). Although higher replacement landscape biomass decreases net emissions from deforestation, these estimates still imply large net releases. 相似文献
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水电站绿化规划与建设措施探讨 总被引：1，自引：0，他引：1
笔者分析了水电开发中电站工区的生态环境变化特点,提出在进行绿化规划时必须把握绿化建设的环保中心任务,以促进水电开发的可持续发展。 相似文献
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在我国全面停止天然林商业性采伐、国有林场深化改革、推进林业产业结构转型等背景下,森林旅游正在成为国有林场发展的支柱产业之一。将国有林场森林旅游发展与产业减贫及乡村振兴紧密结合,有利于实现国有林场多重效益和乡村振兴。文中分析国有林场森林旅游在减贫中的作用和机制,并总结国有林场森林旅游在促进减贫过程中存在的问题,包括国有林场森林旅游自身发展薄弱、可能抑制社区发展、农户管理参与度低、森林资源产权纠纷严重等。在此基础上,提出了应树立保护重于开发的意识、重视解决国有林场改革遗留问题、注重森林旅游与乡村产业振兴相融合、培养森林旅游专业经营管理人才、拓宽森林旅游金融支持渠道、积极处理林地纠纷等建议,以期推动国有林场森林旅游发展获得新动能,促进周边区域乡村振兴取得新进展。 相似文献