高山针叶林

高山针叶林高山针叶林
  1. 亚高山针叶林土壤有机层有效氮动态及其对外源C、N增加的响应

    Dynamics on soil available nitrogen in organic layer and its responses to carbon and nitrogen supply in two subalpine coniferous forests of western Sichuan

  2. 升高CO2浓度和温度对针叶林的影响以及在川西亚高山针叶林研究中的展望

    Effects of Elevated Atmospheric CO_2 and Temperature on Coniferous Forest and Perspectives to Study on the Subalpine Coniferous Forest in Western Sichuan

  3. 土壤反硝化速率均维持在一个较低的水平,川西亚高山针叶林不同恢复阶段土壤的反硝化速率差异不显著(P0.05)。

    Denitrification rates in all the forest soils were low and forest restoration stage had no significant effect on denitrification rates ( One-way ANOVA , P0.05 ) . Denitrification rates were not closely related to water content , the pH value , organic matter and total nitrogen .

  4. 通过80片亚高山针叶林土壤有机物层切片的显微观察和统计,并结合微生物(CFU)的培养观察,对亚高山针叶林土壤有机物分解过程中土壤动物和土壤微生物的作用进行了研究。

    Eighty thin-sections of the subalpine coniferous organic layer were used for observing the effect of microorganisms and animals on the needle decomposition . The distribution patterns of fungal spores and bacteria along the upper 8 cm soil profile of the forest floor were counted using the plate culture method .

  5. 森林水文生态效应及在川西亚高山针叶林群落中的研究麦吊杉群落在贡嘎山东坡海拔2200~2800m之间呈带状分布。

    Picea brachytyla community , one of the main representative types of the subalpine dark coniferous forests in southwest China , zonally distributes on the east-facing slope of the Gongga Mountains at the altitude of 2200 ~ 2800m .

  6. 中国西部亚高山针叶林资源查询系统

    A Query System of Subalpine Coniferous Forest Resources in West China

  7. 川西亚高山针叶林土壤生态过程的研究

    Advances in Soil Ecosystem Process of Subalpine Forest in Western Sichuan

  8. 中国西南亚高山针叶林的生态学问题

    Ecological Problems of Subalpine Coniferous Forest in the Southwest of China

  9. 川西亚高山针叶林土壤颗粒的分形特征

    Fractal characteristics of soil particles under subalpine coniferous forests in Western Sichuan

  10. 亚高山针叶林群落系统的生态学过程和持续性机制

    Ecological Processes and Sustainable Mechanisms of the Subalpine Coniferous Forests

  11. 中国西部亚高山针叶林凋落物的生态功能

    The Ecological Function of Litters in Subalpine Coniferous Forests in Western China

  12. 亚高山针叶林人工恢复的生态学过程研究

    Researches on ecological restoration process of Subalpine Coniferous Plantations in Western sichuan , China

  13. 川西亚高山针叶林人工恢复过程的土壤性质变化

    Changes of soil properties during artificial recovery of subalpine coniferous forests in Western Sichuan

  14. 川西亚高山针叶林生产力和光能利用效率研究现状

    Research of Conifer Forest Productivity and Light Use Efficiency in Subalpine Region of Western Sichuan

  15. 藓类生态学研究以及在川西亚高山针叶林群落的工作概况

    Advance in Moss Ecology and Research Outlines in the Subalpine Coniferous Communities of Western Sichuan

  16. 然而,亚高山针叶林的植物多样性变化对土壤微生物影响还未见报道。

    However , Changes in plant diversity how to influence soil microorganism in subalpine coniferous forests is still uninvestigated .

  17. 长江上游亚高山针叶林土壤水分入渗性能及影响因素

    Water Infiltration and the Influential Factors of Soils Under Subalpine Coniferous Forests in the Upper Reaches of the Yangtze River

  18. 结果表明群落多样性指数和均匀性指数最大的都是位于中海拔(1800-2500m)受到中度干扰的次生灌丛、针阔混交林和亚高山针叶林。

    The results showed that the diversity index and the evenness index were largest in the mid-altitude where there was mid-disturbance .

  19. 与反硝化作用相比,硝化作用对亚高山针叶林土壤氮损失的影响可能更大。

    Results from this research suggest that gross nitrification is more responsible for the nitrogen loss from soils as compared with denitrification .

  20. 本研究探讨了利用土壤颗粒粒径分布的分形维数来定量表征川西亚高山针叶林土壤的特征。

    The quantitative symbolization of the characteristics of subalpine coniferous forest soil by the fractal dimension of soil particle size distribution was discussed in the paper .

  21. 川西亚高山针叶林土壤的硝化和反硝化作用研究在马兰黄土中,影响三氮转化的主要作用有硝化作用和反硝化作用。

    Nitrification and Denitrification in Subalpine Coniferous Forest Soil of Western Sichuan , China ; In Malan Loess , the three nitrogen transform by nitrification and denitrification .

  22. 中国西南地区的亚高山针叶林是该区天然林保护工程的主体,是重要的生态屏障。

    Subalpine coniferous forests are a principal part of Natural Protection Project in southwestern China and important ecological screen to the upper reaches of the Yangtze River .

  23. 分析了云南西北部碧塔海自然保护区的亚高山针叶林林窗大小对林窗植被和更新的影响。

    Effects of gap size on regeneration of subalpine coniferous forests in northwest Yunnan , and species diversity , structure , distribution of the gap vegetation were analyzed .

  24. 同时,研究表明该区亚高山针叶林有效更新的林窗阈值面积大约为75m2.图4表3参22

    Adapt to shade environment , and the threshold gap size keeping on regeneration may be about 75 m 2 in the subalpine coniferous forests . Fig 4 , Tab 3 , Ref 22

  25. 据已有资料分析塔塔加地区土壤动物群落之性质属于高山针叶林土壤动物类型。苏南丘陵不同林分类型土壤质量评价

    According to the previous study , the soil animals in Ta-Ta-Chia belong to the Alpine coniferous soil animal type . Soil quality assessment of different forest stands in the hilly region of southern Jiangsu province

  26. 本文归纳分析了中国西部亚高山针叶林主要类型及不同恢复演替阶段的枯枝落叶贮量、持水性能及其养分归还量和养分利用效率等凋落物的生态功能。

    The ecological functions of litter of different succession stages of the main subalpine coniferous forests in western China were systematically analyzed , including the amount , water holding capacity , nutrients return and utilization efficiencies .

  27. 中国西部亚高山针叶林由于其特有的地理位置和重要的生态经济价值,作为长江中上游生态屏障对平衡长江流域水分有着积极的意义。

    For its own geographic position and important eco economy value , it accentuates the positive significance of the subalpine coniferous forests in western China as the ecological barrier of the middle and upper reaches of the Yangtze River .

  28. 有关亚高山针叶林枯枝落叶层的水源涵养和养分归还研究已成为该区域亚高山针叶林生态功能研究的重要问题和热点,对植被恢复与重建具有十分重要的指导作用。

    Therefore , the research in relate to the function of water supply conservation and nutrients return of litter layer of subalpine coniferous forests has become the important issues and hotpots in this area , and this can well guide the vegetation restoration and rehabilitation .

  29. 本文研究了长江上游支流大渡河的水源地&贡嘎山东坡亚高山针叶林分布区土壤水分入渗性能及其影响因素,结果表明:研究区土壤稳渗率均较大;

    Water infiltration property and the influential factors of soils under subalpine coniferous forests on east slope of the Gongga Mountain , which is the water source of the Dadu River and lies in the Upper Reaches of the Yangtze River , were studied in this paper .

  30. 同时,该系统也可查询任意一个或多个省级行政区或县级行政区的属种分布及其组合情况,从而使得行政区和亚高山针叶林属、种的双向查询变得非常简单。

    The system allows one query the distribution status of all genera or species and their combination situation at any one or more provincial or county levels in terms of administration district , which makes it easy to query genus-species database bi-directionally between administration area and subalpine coniferous forest .