广西石灰岩植被破坏造成的石漠化问题

介绍石漠化的概念、特点、主要成因及其危害,结合广西喀斯特岩溶地区的实际情况,指出人口过度增长、经济落后、人地矛盾加剧以及不合理的人为活动是造成石漠化的主要根源,植被破坏是石漠化产生的直接诱因,具体分析了广西喀斯特岩溶地区石灰岩植被遭受人为破坏而产生石漠化的过程,还介绍了广西石漠化治理工作的一些成功经验和生态恢复模式,为其他地区的石漠化治理提供参考和借鉴。

关于加强保护海南石灰岩生境及其生物多样性的建议

海南省委海南省人民政府:石灰岩生态系统是人类珍贵的自然遗产之一,拥有壮丽的天然景观和独特的专化物种,受到全球各大科研单位及环保组织的重视关注。2004年以来,海南省林业局联合国内外有关专家学者对海南石灰岩地区开展生物多样性调查。

柳州市龙潭、都乐公园植被的初步研究

龙潭、都乐公园位于广西中部的柳州市,总面积约9平方公里,为一典型的石灰岩地区,气候属亚热带。这里的石灰岩植被因受多年的保护而得到恢复,与同一地区内其他地方的光秃石山形成鲜明对比。本文讨论了龙潭、都乐植被现状和特点,本区植被属南亚热带石灰岩次生性藤一灌丛兼有小面积、星散的亚热带石灰岩常绿、落叶混交林。

昆明岩溶山地植物资源调查研究及园林应用价值

石灰岩地区岩溶山地是一种较为特殊的生境类型,土壤含钙高,土壤水分难以保存,环境干燥,该地貌在云南地质中占很重要的地位。研究生长其上的植物及其在园林中的开发利用有特殊意义。通过对昆明周边岩溶地区植物资源进行设置样地调查,对其中部分园林开发利用价值较高的植物资源进行了统计、归纳,对其前景提出了看法。

Study on the Characteristics of Main Vegetation Communities in the Limestone Region of Taihang Mountain

[Objective] The aim was to study the characteristics of main vegetation communities in the limestone region of Taihang Mountain,so as to lay foundation for the further improvement of site conditions and the scientific breeding of vegetation used to restore the mountain field in limestone region.[Method] Based on the investigation of various vegetation communities in controlled test area,forbidden region and barren hillsides in Daqing Mountain basin,Beishui Valley,Mancheng County,Hebei Province,the difference among controlled region,forbidden region and barren hillsides could be found through data analysis and composite score,and the modes of vegetation communities in controlled region and forbidden region were compared to select predominant species of arbor,shrub and grass in limestone region.[Result] Under the similar site conditions,nutrient content and physical properties of soil in controlled region and forbidden region were superior to those of barren hillsides,and persimmon had high nutrient content and better physical properties compared with oriental arborvitae in controlled region;soil water maintenance and litter characters in controlled region and forbidden region improved more obviously than that of barren hillsides,and shrubbery in forbidden region was the most excellent,arborvitae and persimmon in controlled region the second;the biomass and the coverage rate of vegetation communities in controlled region and forbidden region were higher than those of barren hillsides,and those of shrubbery in forbidden region were better than tussock in closing hill,while persimmon was better than arborvitae in controlled region.The predominant species of arbor,shrub and herbage were obtained through composite score.[Conclusion] From the aspects of soil nutrient,physical properties,soil water maintenance,litter characters,vegetation biomass,canopy density and coverage,controlled region and forbidden region were superior to barren hillsides,and the selection of predominant species of arbor,shrub and herbage considered both ecological and economic benefits.

茂兰——地球腰带上的绿宝石

贵州黔南布依族苗族自治州东南部与广西毗邻的荔波县，境内森林蓊郁，风光旖旎，山青水碧，四季常青，气候宜人，人杰地灵，是一方神秘而古老的热土地。这里居住着苗、水、布依、侗、壮、瑶等少数民族，少数民族人口占全县总人口的90％，民族风情浓郁。

中国南海岛屿植物多样性研究及产业化

项目属林业科学领域。岛屿物种因地理隔离存在较高的灭绝风险。该研究通过6家单位的产学研合作，对南海岛屿238个岛屿进行了科学考察，对一些重要的经济植物进行了评价和利用。取得如下研究成果：1首次对七洲列岛等82个岛礁进行系统的科学考察，发现新种14种，新记录植物700多种。系统地研究了岛屿的特有现象，记录海南特有种505种。首次发现海南石灰岩植被和植物群落，提出一个新的海南石灰岩植被分类系统。