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《广西林业》2011,(Z1):176-177
"十一五"期间是广西野生动植物保护与产业发展、自然保护区建设取得辉煌成绩的5年.
到"十一五"期末,广西记录的维管束植物8564种,种类数量仅次于云南、四川,居全国第三位,其中广西特有野生植物744种,特有种161种,濒危保护植物特有值位居全国第一;红树林植物种数23种,居全国第三位;红树林面积8375公顷,约占全国1/3;兰科植物300多种,属于特别珍贵的兜兰属植物有13种,占中国的50%,占全球的18%.野生动物1145种,物种数量居全国第二,其中受保护哺乳动物共有166种,哺乳动物特有值(EV)居全国第六;650种鸟类中仅保护鸟类就483种,特有值排在全国第三位. 相似文献
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钦州市红树林保护与管理现状及对策 总被引：3，自引：0，他引：3
钦州市有真红树植物 9种 ,半红树植物 3种 ,红树林伴生植物 4种。红树林面积30 5 7 3hm2 ,被占红树林面积 10 74 9hm2 。法制法规的不完善和管理上的混乱使得多年来红树林资源遭受很大的破坏 ,红树林质量明显下降。在明确林业部门为红树林管理与保护的主管部门后 ,应加快建立红树林保护区 ,加速红树林资源恢复 ,加强科学研究和宣传教育 ,维护红树林海岸生态系统平衡 ,实现资源的合理配置和可持续发展 相似文献
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广东省沿海红树林现状和发展 总被引：2，自引：0，他引：2
广东沿海红树林是沿海防护林体系的重要组成部分 ,它的管理和造林是生态环境建设的一个内容。对沿海红树林的调查表明 :广东沿海红树林现存面积 14670hm2 ,其中湛江市各县 (市、区 )红树林占总面积 84 .8% ;全省主要红树林植物有 2 6科 4 0种 (其中真红树 10种 ,半红树 11种 ,伴生植物 19种 )。红树林主要树种有 :秋茄、红海榄、木榄、桐花树、无瓣海桑、白骨壤、海漆、榄李、角果木、老鼠勒等。文中对红树林推广造林和恢复发展作了评价 ,为推进红树林建设提供科学依据。 相似文献
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关于“中德海南热带林保护与恢复项目”——东寨港、清澜港自然保护区和三亚市红树林保护与恢复子项目活动的基本设想 总被引：2，自引：0，他引：2
东寨港、清澜港自然保护区和三亚市红树林，总面积3944hm^2，占全省红树林面积的85．0％，包含了全省所有的红树物种(15科19属33种)，仅比全国少2种，东寨港自然保护区还被列入“拉姆撒尔湿地名录”，是国际重要湿地。东寨港、清澜港自然保护区内拥有许多濒危、珍稀鸟类等物种。因此加强对上述三地的红树林资源保护与恢复，对保护全省、全国乃至全世界红树林资源及其生态系统均具极为重要的意义。专家们通过实地考察，提出对“三地”红树林的保护、恢复与子项目活动内容等设想。 相似文献
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湛江市是除海南岛外我国红树植物种类最多的地区，是我国红树林主要分布区之一，也是广东省红树林分布最广、面积最大、红树林物种最丰富的地级市，其中红树植物有12科、16属、17种。本文简要地介绍了湛江市红树林资源状况、中荷合作广东雷州半岛红树林综合管理和沿海保护项目在保护红树林方面所取得的一些成效，以及此项工作的开展对湛江市可持续发展具有的重要意义。 相似文献
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在红树林生态系统中,水鸟多样性被认为是衡量红树林生态系统健康的重要指标。水鸟对环境因子的敏感性不同会导致其栖息地选择的差异,这些差异共同影响了红树林水鸟的物种多样性。开展红树林水鸟多样性及其影响因子分析,从景观尺度研究影响水鸟多样性的因子,可为广东省红树林生态系统健康评估及水鸟保护提供重要参考。文章分析了广东省红树林水鸟物种组成及动态变化,并应用冗余分析(Redundancy analysis, RDA)方法探讨了影响红树林水鸟多样性的因子及相关性。结果如下:(1)广东红树林水鸟物种数、国家重点保护物种数和香农指数分别由2018年的56种、10种和2.492 1提升至2022年的88种、23种和2.742 3;(2) RDA检验显示水鸟类群各典型轴对物种-景观因子关系方差的累积解释均超过96%,且蒙特卡罗排列检验具有显著性(p<0.05),说明前两个典型轴可以很好地解释水鸟物种与景观因子变量之间的相关性;(3) RDA分析表明红树林面积、滩涂面积和水产养殖池面积是影响水鸟多样性的正向因子,人为干扰因子如道路和建设用地面积是影响水鸟多样性的负向因子。 相似文献
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钦州市红树林资源现状与保护对策 总被引：1，自引：0，他引：1
钦州市有红树植物9种，半红树植物3种，红树林伴生植物4种。红树林面积3057.3hm^2，被占红树林面积1074.9hm^2，红树林面积中树高等级在2m以下2353.4hm^2，占77％，盖度在70％以下1646.8hm^2，占54％；Ⅱ级自然度红树林有2180.6hm^2，占红树林面积的71％；质量明显下降，建议尽快理顺有关管理部门的关系并建立红树林保护区，以保护和恢复钦州市的红树林资源，实现生态平衡和资源的可持续发展。 相似文献
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2006年1～6月对深圳市三洲田森林公园兽类资源进行调查,结果表明：该公园共有兽类25种,隶属7目、16科、21属,其中食虫类1种、翼手类3种、鳞甲类1种、食肉类7种、偶蹄目2种、兔形目1种、啮齿类10种。国家二级重点保护野生动物3种,列入中国红皮书中的易危动物3种。16种东洋型种类,占种类数的64％;5种古北型种类,占20％;4种广布型种类,占16％。文章分析了三洲田森林公园兽类3种生态分布类群,提出了保护管理的建议。 相似文献
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福建哺乳动物区系研究 总被引：3，自引：0，他引：3
通过综合收集福建哺乳动物相关研究记载,重新整理了福建哺乳动物种类名录,并对其区系进行了研究。结果表明:福建省有哺乳动物147种(含亚种,下同),其中海洋哺乳动物27种,隶属2目7科16属;陆栖哺乳动物120种,隶属于8目27科70属;属于国家一级重点保护动物5种,国家二级重点保护动物42种。福建的海洋哺乳动物分布类型以外洋型为主(20种),沿岸型(4种)和河海型(3亚种)较少;生态类型以温水种最多(12种),广温种(7种)和暖水种(6种)其次,冷水种最少(2种)。陆栖哺乳动物中东洋界种类90种,古北界种类20种,国内广布种10种,体现出较高的南北类群渗透性。 相似文献
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Coffee agroforestry is a conservation strategy that has shown promise to support the diversity of bird, bat, and insect communities, but few studies have focused on non-volant mammals in coffee farms. We assessed mammal diversity within coffee agroforestry systems in Kodagu, India and investigated the impacts of the non-native shade tree species, Grevillea robusta, on mammal diversity. Twenty farms, with varying amounts of G. robusta planted within the coffee farm, were sampled throughout three rainfall zones during the 4-month study period. We captured six species of small mammals, with indirect methods yielding an additional five species, totaling 11 mammal species. Contrary to current ecological thought, we found that increased amounts of G. robusta did not have a negative impact on either abundance or richness of mammals. Small mammal abundances were higher at farms with greater amounts of herbaceous ground cover and larger, mature shade trees, while small mammal species richness was found to increase with an increase in tree species richness as well as greater amounts of herbaceous ground cover. Additionally, small mammal abundance was higher at coffee farms closer to forested areas. Based on these findings, we suggest the maintenance or cultivation of shade tree richness, mature shade trees, and herbaceous ground cover within coffee farms and preservation of forested areas within the landscape to enhance coffee agroforestry habitat for non-volant mammals. We hope that these habitat requirements will be incorporated into conservation strategies for the promotion of biodiversity within coffee agroforestry systems. 相似文献
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Åshild Ø. Pedersen Nigel G. Yoccoz Rolf A. Ims Therese Sigurdsen 《Forest Ecology and Management》2010
Voles and shrews are key species in northern forest ecosystems. Thus, it is important to quantify to what extent new forestry practices such as planting of non-native tree species impact these small mammals. In northern Norway stands of coastal subarctic birch forests have increasingly been converted to non-native spruce stands during the last century. This leads to changes in the forest floor vegetation and soil conditions that can be expected to negatively impact the community of ground-dwelling small mammals. In this 10-year trapping study we contrasted seasonal small mammal population abundances in spruce plantations with four birch forest varieties. Six different small mammal species were trapped (in descending order of abundance; common shrew Sorex araneus, red vole Myodes rutilus, field vole Microtus agrestis, grey-sided vole M. rufocanus, pygmy shrew S. minutus and water shrew Neomys fodiens). None of the voles appeared to exhibit temporal dynamics resembling population cycles. The three most numerous species were clearly less abundant in the spruce plantations compared to the other forest types. Autumn abundances were most impacted by spruce plantations, indicating that growth rates in the reproductive season were more influenced than winter declines. Species associated with productive forest habitats (i.e. field vole and common shrew) were most impacted by tree species conversion. Still young spruce plantations inter-mixed with birch trees and the ecotone habitat, sustained small mammal abundances comparable to the native birch forests. This implies that managing spruce plantations to maintain a mix of different tree species and high spatial heterogeneity (i.e. more ecotones), will reduce the negative impacts on the small mammal community. On the contrary, if young spruce plantations, as they age become spruce monocultures covering larger parts of the landscapes than they do presently, the negative effects on small mammal communities may be larger than observed in the present study. 相似文献
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2019年7月,使用网格法布设了11台红外相机首次对广东曲江沙溪省级自然保护区大中型兽类资源进行了调查研究,调查累计102天,累计回收1 123个相机工作日的数据,共拍摄到兽类独立有效照片数103张,鉴定出兽类3目6科9种,分别为黄腹鼬Mustela kathiah、鼬獾Melogale moschata、斑林狸Prionodon pardicolor、豹猫Prionailurus bengalensis、野猪Sus scrofa、小麂Muntiacus reevesi、赤腹松鼠Callosciurus erythraeus、倭花鼠Tamiops maritimus和红腿长吻松鼠Dremomys pyrrhomer,其中,斑林狸和红腿长吻松鼠为沙溪自然保护区新纪录种;发现相对多度指数最高的兽类是野猪,为29.39,分布最广泛的地栖兽类是鼬獾;建立兽类累积曲线发现前31天兽类种数上升较快,后71天趋于平缓;研究进一步证实了红外相机技术可以作为保护区兽类补充调查的重要手段,可以在保护区兽类物种编目、相对多度指数、分布现状与凭证标本等收集上发挥重大作用。 相似文献
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Paula Gon?alves Sandra Alcobia Luciana Sim?es Margarida Santos-Reis 《Agroforestry Systems》2012,85(3):383-395
Non-flying mammal richness and distribution were studied in a landscape matrix consisting of a highly managed agro-silvo-pastoral system dominated by a cork oak woodland (montado) to test the predictions of the Intermediate Disturbance Hypothesis (IDH). Sampling consisted on detection of mammalian signs of presence, along with the use of scent stations and small mammal live-trapping. Results were analyzed using generalized linear models, considering land uses, landscape metrics and grazing intensity and gave support to the predictions of the IDH. Pure forestry and intensive agricultural uses showed lower species richness than the silvopastoral system, whilst landscape heterogeneity and riparian corridors were shown to be most beneficial to mammal species richness, with small mammals being directly and negatively affected by grazing intensity. The increasing use of the montado for raising cattle has led to landscape homogenization by means of grazing and shrub clearance for pasture cultivation and this, combined with incremented stocking rates, constrains species richness. In this landscape context, watercourses assume a relevant role as patches of suitable habitat providing shelter, food, movement corridors and dispersion routes for mammals. Recent options of fencing forest patches with good forest natural regeneration or with a high diversity/density of Mediterranean maquis, and restoring degraded watercourses, both to improve landscape heterogeneity, appear to positively affect the mammal community. This is a current challenge in terms of monitoring and research. 相似文献