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The Role of “Long Forest” Belief of the Dai Nationality in the Conservation of Forest Resources: A Case Study of Manjingchengzi Village in Xishuangbanna
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作者 FAN Xi ZHOU Bo 《Journal of Landscape Research》 2017年第5期106-110,共5页
The core of"Long Forest"belief of the Dai nationality is to protect natural forests and forests for conservation of water supply as the home of ancestral gods of the nation and to maintain the ecological bal... The core of"Long Forest"belief of the Dai nationality is to protect natural forests and forests for conservation of water supply as the home of ancestral gods of the nation and to maintain the ecological balance by means of"Long Forest"worship,"Long Forest"taboo,the traditional customary law,and village regulation and non-governmental agreement.This paper takes Manjingchengzi Village in Xishuangbanna as an example to analyze the distribution of forest land in different periods over the past 60 years and explore the role of"Long Forest"belief in the conservation of local forest resources in a view to providing a frame of reference for regional ecological environment protection. 展开更多
关键词 The Dai nationality "Long forest" conservation of forest resources
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Local People's Perception of Forest Resources Conservation in Ekiti State, Nigeria
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作者 Arowosoge Oluwayemisi Grace 《Journal of Environmental Science and Engineering(B)》 2015年第3期132-140,共9页
关键词 森林资源保护 尼日利亚 历史文化价值 生物多样性 知觉 森林保护区 PFR 问卷调查
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The Dependency of Coastal Livelihood on Forest Resources, and Alternative Options in the Periphery of the Sundarbans Reserve Forest, Patharghata, Bangladesh
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作者 Abdul Alim Shaikh Mousumi Halder +2 位作者 Mohammad Badrul Alam Talukder Sk. Mohibullah Sanjoy Saha 《Open Journal of Forestry》 2021年第4期398-414,共17页
Dependency on forest resources poses a threat to the environment in Patharghata, Bangladesh. Therefore, this study explores the role of forest resource in the life and livelihood of coastal people as well as to unders... Dependency on forest resources poses a threat to the environment in Patharghata, Bangladesh. Therefore, this study explores the role of forest resource in the life and livelihood of coastal people as well as to understand the effectiveness of forest and status of forest dependency in and around south-central coast in Patharghata, Bangladesh. We collected data randomly from 105 household heads through both open and close-ended questionnaire. To investigate the forest dependency and people’s perception regarding alternative solutions, Microsoft excel software program has been applied. The findings reveal that usage of fuelwood in cooking, housing structure, fish catching, honey & fodder collection significantly contributes to household dependency on forest resources, while other variables seem to be insignificant. Our study amplifies that the share of forest income to the total household income was only 19% while other earning sources provide</span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;">d</span></span></span><span style="font-family:Verdana;"><span style="font-family:Verdana;"><span style="font-family:Verdana;"> 81% income. The result shows that respondent people collect forest resources primarily for cooking purpose with a share of 71% where 9% forest resources are collected as fodder followed by 8% forest resource collection as food and sheltering purposes. Moreover, the study found that using alternative cooking system, artificial instruments, declaring the forest as tourist spot, changes in housing structure, occupation are some effective options to reduce forest dependency. The study concludes that these alternative options need more financial and other support from the government, non-government and other civil society organizations to cut down forest resource dependency. 展开更多
关键词 forest resource Dependency Biodiversity conservation Sundarban Reserve forest Coastal Livelihood
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The Role of Sports Diplomacy in Advancing Environmental Security in Africa: Case of Forest Conservation in Kenya
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作者 Benjamin Mutuku Kinyili Shazia Chaudhry 《International Relations and Diplomacy》 2021年第5期199-210,共12页
Environmental security remains a key challenge in the late 19th through to the 21st century,whose solution has attracted a number of initiatives.Sports diplomacy has achieved great strides in achieving international,r... Environmental security remains a key challenge in the late 19th through to the 21st century,whose solution has attracted a number of initiatives.Sports diplomacy has achieved great strides in achieving international,regional,and local unity.However,the use of sports diplomacy in achieving environmental security has received much less research attention.This research examines the role of sports in diplomacy in achieving environmental security in Kenya.This study was anchored on the soft power theory and Conservation of Resources(COR)theory which offer frameworks for explaining the role of sports diplomacy in advancing environmental security.The study adopted exploratory research design.The target population was diplomats,marathoners,coaches,environmentalists,conservationists and government officials,academia as well as Water Resources Authority(WRA).The primary data were obtained through open and closed structured questionnaire.The collected data were analyzed through the use of frequency distribution,and thematic analysis.The study established that sports diplomacy advanced environmental security in Kenya,which was better for athletics and volleyball.Environmental security was also enhanced through training,sensitization,conservation efforts,and environmental education.Sport events also allowed a contact-platform for interaction between various groups involved in environment and forest conservation.This study recommends that sports diplomacy should be used in most of the regions in Kenya experiencing environmental perturbations and the current strategies should be applied in the sports diplomacy and environmental conservation as well as security.Further,the government is also encouraged to appoint more sports ambassadors with proper environmental knowledge to help in environmental management.The role of academicians in sports diplomacy and environmental security was found to be minimal where academicians should be at the forefront as the 21st century diplomats are incorporated into sports to be local ambassadors.Perceiving the significance of sports diplomacy and environmental security,there is need for coordination between various county governments to coordinate their efforts and in the process they should bring on board even the non sports actors to boost the role of sports in diplomacy and environment. 展开更多
关键词 sports diplomacy environmental security forest conservation soft power theory conservation of resources(COR)theory
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Orchid diversity and distribution pattern in karst forests in eastern Yunnan Province,China
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作者 Qiang Liu Xunfeng Wu +4 位作者 Haitao Xing Kuanbo Chi Wenhua Wang Liang Song Xiaoke Xing 《Forest Ecosystems》 SCIE CSCD 2023年第3期348-356,共9页
Global biodiversity loss and mass extinction of species have raised serious global concerns,especially in fragile ecosystems.Karst forest,a well-known fragile ecosystem,is served as a natural laboratory for biogeograp... Global biodiversity loss and mass extinction of species have raised serious global concerns,especially in fragile ecosystems.Karst forest,a well-known fragile ecosystem,is served as a natural laboratory for biogeographical,ecological,evolutionary,and taxonomic research.However,species richness and distribution patterns in karst forests largely remain unclear.Orchidaceae has been regarded as the“flagship”group of plant diversity.In this study,we use Wanfengshan Nature Reserve in southeast Yunnan,China,as a model to determine the conservation status of orchids in the karst forest by conducting systematic field surveys in the past three years from 2019 to 2022.In total,we identified 78 orchid species in 35 genera in Wanfengshan Nature Reserve.The dominant species were Bulbophyllum andersonii,Eria coronaria,Nervilia mackinnonii and Paphiopedilum micranthum.Multiple life forms were also observed,including epiphyte(14.29%),facultative epiphyte(18.18%),lithophyte(23.38%),and terrestrial(44.15%).Orchid species richness showed a bimodal pattern varied with altitude,the higher richness was recorded at 1,500-1,600 and 1,200-1,300 m,while the minimum was below 1,100 m.Each independent hill is rich in orchid species including‘endemic’species.A total of 25(33.8%)orchid species were considered threatened by the Redlist of Chinese Vascular Plants(Qin et al.,2017),including 3 CR species,5 EN species and 17 VU species.We call for more research addressing the mechanisms of ecological adaption,mycorrhizal interactions,and pollination of orchids in karst forests,and effective ways for recovery and conservation of orchids. 展开更多
关键词 Orchid diversity Limestone forest resource investigation Threatened status Orchid conservation
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大熊猫国家公园成都片区昆虫资源调查初报
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作者 王萍萍 樊星 +4 位作者 陈洋 郑冰权 曾涛 余洋丽娜 冉江洪 《四川动物》 北大核心 2024年第3期349-360,共12页
2022年6—11月对大熊猫国家公园成都片区的昆虫资源开展了初步调查,共采集昆虫标本1214号,经鉴定隶属于13目95科424种。在昆虫类群组成上,鳞翅目Lepidoptera占优势,其次为鞘翅目Coleoptera、半翅目Hemip-tera,物种数占比分别为58.96%、1... 2022年6—11月对大熊猫国家公园成都片区的昆虫资源开展了初步调查,共采集昆虫标本1214号,经鉴定隶属于13目95科424种。在昆虫类群组成上,鳞翅目Lepidoptera占优势,其次为鞘翅目Coleoptera、半翅目Hemip-tera,物种数占比分别为58.96%、17.45%、6.37%。区内分布有国家二级保护昆虫2种(三尾凤蝶Bhutanitis thaidina和喙凤蝶Teinopalpus imperialis),全国危险性林业有害生物2种(星天牛Anoplophora chinensis和云斑白条天牛Batoc-era horsfieldi)。3种生境类型的昆虫多样性分析结果表明:Shannon-Wiener多样性指数和丰富度指数为次生林(6.63,29.62)>人工林(6.53,22.48)>居民农耕地(6.12,19.84);优势度指数为居民农耕地(0.07)>次生林(0.06)>人工林(0.04);均匀度指数为人工林(0.94)>居民农耕地(0.91)>次生林(0.88)。本调查结果丰富了大熊猫国家公园成都片区的昆虫资源基础数据,为生物多样性保护、评价和有害生物防控提供了依据。 展开更多
关键词 大熊猫国家公园 昆虫资源 多样性保护 危险性林业有害生物
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西藏天保工程二期建设成效监测评价
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作者 李锐 陈振雄 +4 位作者 杜志 丁山 张伟焕 邓成 米玛次仁 《中南林业调查规划》 2024年第2期14-21,共8页
根据西藏天保工程实施特点,构建包括资金执行、目标完成、建设管理过程、资源动态变化、生态状况、工程建设效益6个方面内容的监测体系,设置19项监测指标,确定指标权重,构建工程建设监测评价体系,通过定量评价与定性分析相结合的方式评... 根据西藏天保工程实施特点,构建包括资金执行、目标完成、建设管理过程、资源动态变化、生态状况、工程建设效益6个方面内容的监测体系,设置19项监测指标,确定指标权重,构建工程建设监测评价体系,通过定量评价与定性分析相结合的方式评价西藏天保工程二期建设成效。评价结果如下:①工程区整体得分为92.63分,属优秀。②三个工程实施县中整体得分最高的是芒康县91.57分,其次是江达县89.62分,贡觉县89.31分。③截至2022年工程期末,工程区的有林地面积增加10829.358hm^(2),森林覆盖率增长至42.10%,活立木蓄积提高了4.27%,单位面积蓄积增加3.67m^(3)/hm^(2)。④工程实施期间生态状况持续良好,生态效益提高,生态扶贫效果显著,社会经济效益显著,森林管护体系完善,森林资源保护政策深入人心,建立了天然林保护长效机制。 展开更多
关键词 天保工程 成效 监测 定量评价 定性分析 西藏
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Discussion on Spatial Optimization Modeling of Water Resource Conservation Forests and Management Practice of Forest Functions 被引量:1
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作者 Li Jianjun Zhang Huiru +2 位作者 Wang Chuanli Zang Hao Cao Xupeng 《Chinese Forestry Science and Technology》 2012年第3期63-63,共1页
According to the unification principle of system structure and system function of the Water Resource Conservation Forests,seven factors were selected from stand spatial structure,trees structure and healthy of woods,t... According to the unification principle of system structure and system function of the Water Resource Conservation Forests,seven factors were selected from stand spatial structure,trees structure and healthy of woods,the multifunction management optimization model target was confirmed by using nonlinearity multi-objective programming approach, and the target function-stand spatial structure homogeneity index was defined to establish spatial optimization models with restraining conditions set up in diversity of stand structure and spatial structure.The spatial structure of available typical stand in the wet land area in southern Donting Lake was optimized by means of selective cutting and reinforcement planting.The results showed that the spatial structure was improved obviously and trees diversity and stand health were not weakened.It’s suggested that the established optimization model can effectively guide multifunction management,stand structure optimization and the steadiness of ecological ecosystem and it is convenient and operable in practice,and it’s very important to protect and recover ecosystem of Water Resource Conservation Forests. 展开更多
关键词 water resource conservation forest southern Dongting lake WETLAND spatial structure of stand HOMOGENEITY index optimization modeling
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Mangrove Forest Characterization in Southeast Côte d’Ivoire
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作者 Isimemen Osemwegie Dibi N’da Hyppolite +2 位作者 Christine Stumpp Barbara Reichert Jean Biemi 《Open Journal of Ecology》 2016年第3期138-150,共13页
Mangrove ecosystems are faced with far more existential threats of erosion than their terrestrial counterparts. Consequences of their degradation vary from decline in edible aquatic stocks, coastal erosion and aquatic... Mangrove ecosystems are faced with far more existential threats of erosion than their terrestrial counterparts. Consequences of their degradation vary from decline in edible aquatic stocks, coastal erosion and aquatic weeds invasion. Mangrove forest dynamics was assessed from multi-temporal analyses of remotely sensed satellite images (mosaics of 1989/90 and 2014/15) within 233,900 hectares. Ground-truthing was accompanied by field measurements in selected forest stands to characterize structure, estimate biomass and carbon pools. With conservation as overriding goal, a socio-economic survey was conducted to underpin the factors influencing mangrove forests over-exploitation and qualitatively assess the sensitivity of the locals to resources decline. The region recorded fifty percent loss of mangrove area during the 25-year period. Low leaf area index (1.02 - 2.52 m<sup>2</sup>·m<sup>-2</sup>) confirms canopy openness. Above-ground root biomass (kg per root) ranged between 110.67 and 382.64. The roots demonstrate capacity to fix up to 176 Mg C ha<sup>-1</sup> with average carbon content of 46 percent. Highest carbon pools were in the Eloka-To forest stands, in near natural conditions. Despite harsh environmental conditions, potential for natural regeneration was evidenced by seedlings density (individuals per m<sup>2</sup>) up to 76. Pilot survey revealed high dependence on mangrove resources for direct income (70 percent) and daily energy needs (60 percent). Despite the heightened awareness of the impending dangers posed by mangrove deforestation and willingness to conserve, riverine communities are incapacitated by lack of viable economic alternatives. External interventions are therefore imperative to achieve conservation goals with long-term implications for climate change adaptation and mitigation. 展开更多
关键词 Carbon Pool Climate Change conservation DEGRADATION Mangrove forest resources
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林长制对森林资源保护的影响探究 被引量:1
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作者 王长俊 《广东蚕业》 2023年第7期41-43,共3页
推行林长制改革,强化地方党委政府保护发展林草资源的主体责任和主导作用,是全面贯彻习近平生态文明思想和新发展理念的重大实践,也是守住自然生态安全边界的必然要求。文章分析了森林资源保护工作中林长制的价值和意义,指出了林长制对... 推行林长制改革,强化地方党委政府保护发展林草资源的主体责任和主导作用,是全面贯彻习近平生态文明思想和新发展理念的重大实践,也是守住自然生态安全边界的必然要求。文章分析了森林资源保护工作中林长制的价值和意义,指出了林长制对森林资源保护的影响,阐述了林长制在森林资源保护工作中的应用措施,希望为有关人员提供参考。 展开更多
关键词 林长制 森林资源保护 生态保护 影响 应用
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四川省天然林资源特点与管护对策研究 被引量:1
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作者 武启飞 张文 +2 位作者 王纪杰 曾念念 李悦 《贵州林业科技》 2023年第2期99-104,共6页
本文基于四川省2019年底完成的森林资源管理“一张图”成果和近五年森林资源一类清查数据,应用数理统计的方法,分析了四川省天然林资源现状及分布特点,探讨了四川省天然林资源管护中存在的问题。结果表明:四川省天然林资源总量丰富,但... 本文基于四川省2019年底完成的森林资源管理“一张图”成果和近五年森林资源一类清查数据,应用数理统计的方法,分析了四川省天然林资源现状及分布特点,探讨了四川省天然林资源管护中存在的问题。结果表明:四川省天然林资源总量丰富,但地域分布不平衡,生态区位重要,但天然林质量不高,天然林资源分布与社会经济发展水平呈负相关;天然林管护中存在管护力度不足、技术落后、体制不健全等问题。提出了完善保护制度、加强监管力度、完善补偿机制、平衡生态与民生、探索管护新机制,强化科技支撑几大对策,旨在为天然林持续保护和修复提供决策依据,为天然林保护修复制度方案的制定提供参考。 展开更多
关键词 四川省 天然林资源 现状及动态 存在问题 对策及建议
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西藏天保工程二期生态服务功能效益计算对比
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作者 李锐 陈振雄 +2 位作者 张伟焕 邓成 丁山 《绿色科技》 2023年第14期75-79,84,共6页
对西藏天然林资源保护工程2010年末和2020年末的森林资源状况进行了调查,从实物量和价值量2个方面对森林保育土壤、林木养分固持、涵养水源、固碳释氧、净化大气、生物多样性保护等六大生态服务功能效益进行了量化对比。结果表明:工程... 对西藏天然林资源保护工程2010年末和2020年末的森林资源状况进行了调查,从实物量和价值量2个方面对森林保育土壤、林木养分固持、涵养水源、固碳释氧、净化大气、生物多样性保护等六大生态服务功能效益进行了量化对比。结果表明:工程区森林生态服务功能效益的实物量、价值量年均增长2.34%,生态状况持续良好,生态系统稳定,工程的实施有效地改善了生态环境,取得了显著的生态效益。以期在评估西藏天然林保护工程二期建设成效的同时,也为西藏森林生态系统的生态系统服务功能评估提供了有效的测算方法和依据。 展开更多
关键词 天保工程 生态服务功能 依据 对比 西藏
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祁连山水源涵养林枯枝落叶层水文生态功能 被引量:52
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作者 常宗强 王金叶 +2 位作者 常学向 王艺林 贾玉琴 《西北林学院学报》 CSCD 北大核心 2001年第z1期8-13,共6页
通过对祁连山水源涵养林凋落物及其分解过程以及蓄积量随时间变化的分析 ,研究了枯枝落叶层的持水、截留作用和蓄水保土效益 ,认为祁连山水源涵养林枯枝落叶层的水文生态功能最终体现在水土保持和水源涵养效能上 。
关键词 水源涵养林 枯枝落叶层 蓄积量 森林水文功能
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黄前库区森林土壤蓄水能力研究 被引量:37
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作者 李德生 张萍 +2 位作者 张水龙 尹建道 鲁法典 《南京林业大学学报(自然科学版)》 CAS CSCD 北大核心 2004年第1期25-28,共4页
对黄前库区森林主要类型刺槐林和油松林土壤涵蓄降水作用的研究结果表明:森林土壤的渗透性能以刺槐林地最好,阳坡油松林次之,阴坡油松林最差;森林土壤恢复持水,即连续涵蓄降水的能力较强,2h恢复的持水量可相当于20.5~33.2mm的降水;3种... 对黄前库区森林主要类型刺槐林和油松林土壤涵蓄降水作用的研究结果表明:森林土壤的渗透性能以刺槐林地最好,阳坡油松林次之,阴坡油松林最差;森林土壤恢复持水,即连续涵蓄降水的能力较强,2h恢复的持水量可相当于20.5~33.2mm的降水;3种森林类型的地表径流量和土壤侵蚀量均表现为阳坡油松林最大,阴坡油松林次之,阳坡刺槐林最小;降雨量越大,地下径流出现的时间越早,高峰期出现的时间越晚;同样降雨量情况下,3种森林类型地下径流和高峰期出现时间均表现为阴坡油松林最晚,阳坡刺槐林次之,阳坡油松林最早。 展开更多
关键词 库区集水 森林土壤 蓄水能力 水源涵养
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宁夏六盘山地区不同森林类型土壤的蓄水和渗透能力比较 被引量:68
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作者 张雷燕 刘常富 +3 位作者 王彦辉 时忠杰 何常清 鲁兴隆 《水土保持学报》 CSCD 北大核心 2007年第1期95-98,共4页
通过对六盘山香水河小流域的华北落叶松、杂灌丛、华山松和白桦等4种森林植被类型的土壤水文物理性质的调查和分析比较,发现它们在土壤容重、持水能力和渗透性方面都存在差异:不同林地的最大持水力受土壤分层的厚度、总孔隙度大小的影... 通过对六盘山香水河小流域的华北落叶松、杂灌丛、华山松和白桦等4种森林植被类型的土壤水文物理性质的调查和分析比较,发现它们在土壤容重、持水能力和渗透性方面都存在差异:不同林地的最大持水力受土壤分层的厚度、总孔隙度大小的影响,范围变化在313.4-604.8 mm之间;稳渗速率在5.94-8.65 mm/m in之间。通过比较得出杂灌丛土壤的涵养水源功能最强,应该增加灌木林的营造。 展开更多
关键词 六盘山 森林土壤 涵养水源
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辽西半干旱区几种人工林生态系统涵养水源功能研究 被引量:42
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作者 罗跃初 韩单恒 +3 位作者 王宏昌 刘建民 魏晶 吴钢 《应用生态学报》 CAS CSCD 2004年第6期919-923,共5页
从森林生态系统树冠截留降雨、枯落物持水及土壤蓄水 3个层次对辽西半干旱区 5种人工林生态系统的涵养水源功能进行了定量研究 .结果表明 ,各人工林生态系统树冠对降雨的平均截留率为1 4 5 8%~ 37 1 9% ,依次为沙棘林 >油松沙棘混... 从森林生态系统树冠截留降雨、枯落物持水及土壤蓄水 3个层次对辽西半干旱区 5种人工林生态系统的涵养水源功能进行了定量研究 .结果表明 ,各人工林生态系统树冠对降雨的平均截留率为1 4 5 8%~ 37 1 9% ,依次为沙棘林 >油松沙棘混交林 >杨树沙棘混交林 >油松纯林 >杨树纯林 ;枯落物层厚度为 1 6~ 4 1cm ,枯落物贮量为 1 890 4~ 6 4 2 5 2kg·hm-2 ,枯落物层厚度和贮量均为沙棘林 >油松沙棘混交林 >杨树沙棘混交林 >油松纯林 >杨树纯林 ,枯落物最大持水量取决于枯落物贮量及其最大持水率 ,枯落物最大持水量为 5 95 7 7~ 1 9332 9kg·hm-2 ,依次为沙棘林 >油松沙棘混交林 >杨树沙棘混交林 >油松纯林 >杨树纯林 ;各人工林生态系统 0~ 4 0cm土壤层非毛管蓄水量为 2 3 70~ 37 85mm ,依次为沙棘林 >杨树沙棘混交林 >油松沙棘混交林 >杨树纯林 >油松纯林 .在 5种人工林生态系统中 ,沙棘林的涵养水源功能最好 。 展开更多
关键词 辽西半干旱区 人工林 涵养水源 树冠截留 枯落物持水 土壤蓄水
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北京密云水库流域水源保护林区径流空间尺度效应的研究 被引量:19
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作者 秦永胜 余新晓 +1 位作者 陈丽华 刘松 《生态学报》 CAS CSCD 北大核心 2001年第6期913-918,共6页
通过 1 0 a的森林水文定位观测 ,对比研究了北京密云水库流域水源保护林和对照荒坡地径流在坡面尺度 (约 0 .9hm2 )和小流域尺度 (约 2 .7hm2 )上的空间尺度效应。结果表明 ,荒坡地和水源保护林地的径流系数在坡面和试验流域尺度上与降... 通过 1 0 a的森林水文定位观测 ,对比研究了北京密云水库流域水源保护林和对照荒坡地径流在坡面尺度 (约 0 .9hm2 )和小流域尺度 (约 2 .7hm2 )上的空间尺度效应。结果表明 ,荒坡地和水源保护林地的径流系数在坡面和试验流域尺度上与降雨量呈显著的对数相关关系 ;在坡面尺度和小流域尺度 ,荒坡地径流系数都显著地大于水源保护林地 ;而且随着降雨量级的增大 ,荒地与水源保护林地的径流系数之差在小流域尺度比坡面尺度更大 ;随着研究尺度从坡面到小流域的扩展 ,荒地径流系数显著增大 ,而水源保护林地的径流系数变化微小。这一尺度效应说明水源保护林对水文过程具有较大的调蓄能力 ,表现为较强的水源涵养作用。 展开更多
关键词 尺度 水源保护林 径流系数 密云水库
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广西雅长林区野生兰科植物资源现状与保护策略 被引量:14
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作者 冯昌林 邓振海 +5 位作者 蔡道雄 吴天贵 贾宏炎 白灵海 赵祖壮 苏勇 《植物科学学报》 CAS CSCD 北大核心 2012年第3期285-292,共8页
广西雅长林区野生兰科植物资源丰富,约有52属156种,其中雅长保护区几乎每座山头都有兰科植物的分布,但其种类与居群基株数量等分布不均匀,且不连续,呈现出破碎化现象,其中面积较大的局部密集分布区有16处。文中根据野生兰科植物的资源... 广西雅长林区野生兰科植物资源丰富,约有52属156种,其中雅长保护区几乎每座山头都有兰科植物的分布,但其种类与居群基株数量等分布不均匀,且不连续,呈现出破碎化现象,其中面积较大的局部密集分布区有16处。文中根据野生兰科植物的资源现状及生物生态学特性,针对目前兰科植物保育存在的问题,分析人畜干扰及自然条件变化等不利因素,从兰科植物维持机制角度出发,提出雅长野生兰科植物的保护应以就地保护为主、迁地保育为辅的保育措施与策略:保护区应加快建设的步伐,构建野生兰科植物种质资源基因库,同时对密集分布区在人畜干扰大的区域,优先拉设铁丝网围护,并派专人巡护,重点保护,确保野生兰科植物及基因库安全。 展开更多
关键词 野生兰科植物 资源现状 保护策略 雅长林区 广西
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祁连山水源涵养林组成结构及生长状况 被引量:16
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作者 王金叶 张学龙 +2 位作者 张虎 王艺林 金铭 《西北林学院学报》 CSCD 北大核心 2001年第z1期4-7,共4页
祁连山水源涵养林受立地水热条件影响和自然、历史干扰 ,多世代演替林型共存 ,分布占祁连山三个垂直气候带 ,主要由干性灌丛林、青海云杉林、祁连圆柏林、湿性灌丛林四种类型 ,组成简单、结构单一 ,呈现高寒半干旱、半湿润气候特点 ;青... 祁连山水源涵养林受立地水热条件影响和自然、历史干扰 ,多世代演替林型共存 ,分布占祁连山三个垂直气候带 ,主要由干性灌丛林、青海云杉林、祁连圆柏林、湿性灌丛林四种类型 ,组成简单、结构单一 ,呈现高寒半干旱、半湿润气候特点 ;青海云杉林是祁连山水源涵养林的主体 ,相对其它森林类型其组成、层次结构复杂 ,生产力较高 ;干性灌丛林分布在立地条件较差的浅山地带 ,是祁连山水源涵养林的先锋林型 ;湿性灌丛林分布在山地森林草原带以上 ,是地带性顶极群落。 展开更多
关键词 水源涵养林 组成结构 生长状况
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不同类型水源保护林水资源保护功能的分析和评价 被引量:11
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作者 石青 余新晓 +1 位作者 郭浩 杨爱荣 《水土保持通报》 CSCD 北大核心 2004年第4期31-33,共3页
针对北京市密云县密云水库上游清水河流域现有水源保护林类型现状,对油松林、刺槐林、板栗林及混交林4个林分类型的截留降雨、枯枝落叶容纳雨量、林地土壤蓄水、减少地表径流及净化水质能力进行了分析、比较和评价。结果表明,在最小消... 针对北京市密云县密云水库上游清水河流域现有水源保护林类型现状,对油松林、刺槐林、板栗林及混交林4个林分类型的截留降雨、枯枝落叶容纳雨量、林地土壤蓄水、减少地表径流及净化水质能力进行了分析、比较和评价。结果表明,在最小消耗水资源和有利于水资源积累的前提下,水源保护林中的油松水资源消耗较少,混交林次之,刺槐林、板栗林最多。因此建议水源保护林营造应加大耗水能力小和净化水质的树种比例。 展开更多
关键词 水源保护林 水资源 保护功能 水资源消耗
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