Rhizosphere and bulk soil enzyme activities in a <Emphasis Type="Italic">Nothotsuga longibracteata</Emphasis> forest in the Tianbaoyan National Nature Reserve,Fujian Province,China

The rhizosphere, distinct from bulk soil, is defined as the volume of soil around living roots and influenced by root activities. We investigated protease, invertase, cellulase, urease, and acid phosphatase activities in rhizosphere and bulk soils of six Nothotsuga longibracteata forest communities within Tianbaoyan National Nature Reserve, including N. longibracteata + either Phyllostachys pubescens, Schima superba, Rhododendron simiarum, Cunninghamia lanceolata, or Cyclobalanopsis glauca, and N. longibracteata pure forest. Rhizosphere soils possessed higher protease, invertase, cellulase, urease, and acid phosphatase activities than bulk soils. The highest invertase, urease, and acid phosphatase activities were observed in rhizosphere samples of N. longibracteata + S. superba. Protease was highest in the N. longibracteata + R. simiarum rhizosphere, while cellulase was highest in the pure N. longibracteata forest rhizosphere. All samples exhibited obvious rhizosphere effects on enzyme activities with a significant linear correlation between acid phosphatase and cellulase activities (p < 0.05) in rhizosphere soils and between protease and acid phosphatase activities (p < 0.05) in bulk soils. A principal component analysis, correlating 13 soil chemical properties indices relevant to enzyme activities, showed that protease, invertase, acid phosphatase, total N, and cellulase were the most important variables impacting rhizosphere soil quality.     

福建天宝岩国家级自然保护区生态区位的重要性

通过对福建天宝岩国家级自然保护区基本情况的调查和资源现状的综合分析,从原始性、多样性、典型性、珍稀性、稳定性、经济性、学术性等不同角度概述了保护区生态区位的重要性。     

天宝岩天然猴头杜鹃种群立木级结构特征研究

在对天宝岩国家级自然保护区不同海拔天然猴头杜鹃林乔木种群全面调查基础上,对猴头杜鹃林进行立木分级,采用动态可比性林木分级法研究了猴头杜鹃林种群结构。研究结果表明：不同海拔天然猴头杜鹃林均以Ⅳ级木占绝对优势,该级林木株数远远大于其他级林木数量。此外,各海拔天然猴头杜鹃林Ⅳ级木数量呈现高〉低〉中,而其在相应海拔所占比例却与海拔呈正相关;低海拔天然猴头杜鹃种群处在A型种群的前中期,中海拔种群处在A型种群的后期,高海拔天然猴头杜鹃种群则处在A型种群的中后期。     

梁野山产3种福建省新记录草本植物

报道了产自福建省武平县梁野山的3种福建省新记录草本植物,分别是台湾白前(Peucedanum formosanum Hayata)、细叶蓼(Polygonum taquetii H.Léveillé)、衡山金丝桃(Hypericum hengshanense W.T.Wang)。标本存放于华南农业大学林学院植物标本室(CANT)。     

Floristic analysis of the evergreen broad-leaved forest community from Jiulianshan National Nature Reserve in Jiangxi Province, China

Floristic composition of the evergreen broad-leaved forest in Jiulianshan Mountain was analyzed based on field investigations and community ecology. The community is rich in species diversity, with 144 spermatophyte families including 379 genera and 647 species, in which there are 6 gymnosperm families including 8 genera and 9 species, 21 monocotyledon families including 77 genera and 116 species, and 117 dicotyledon families including 294 genera and 522 species. Dominant families of the flora are Fagaceae, Lauraceae, Aquifoliaceae, Rosaceae, Ternstroemiaceae, Theaceae, Rubiaceae, Moraceae and Euphoarbiaceae, most of which are of tropical &; subtropical distribution. As for family systematic distribution, the ratio of tropical &; subtropical to temperate genera is 100:62.8 in 142 genera of 16 families. As for generic distribution in field investigation data, the tropical &; subtropical areal type accounts for the majority of genera, in which there are 205 genera belonging to the tropical &; subtropical areal type, 131 genera belonging to the temperate areal type, 35 genera belonging to the cosmopolitan areal type and 8 genera belonging to the endemic-to-China areal type. The ratio of the tropical &; subtropical to temperate genera was 100:63.9. Floristic composition of the evergreen forest community in Jiulianshan and the typical species of the zonal flora will provide a scientific foundation for stand rehabilitation and stand establishment approximating a natural evergreen broad-leaved forest community. This study also indicates that the sample data based on community research are valid and convenient for floristic and environmental analysis of the evergreen broad-leaved forest community from the Jiulianshan Mountain.     

福建龙栖山国家级自然保护区的保护与建设

福建龙栖山国家级自然保护区在保护好自然资源的前提下,实施科学区划、有效管理的手段,充分利用实验区的资源,使保护区获得较高的经济、社会和生态效益,有力地推动了保护区的自身建设与周边地区的发展。     

Community features ofIndocalamus wilsoni in the Shennongjia National Nature Reserve, China

Four vegetation types, namely coniferous and broadleaved mixed forest, secondary deciduous broadleaved forest, open shrubs and meadow, with dwarf bamboo (Indocalamus wilsoni) are compared on their floristic composition, life form, community structure, and survivorship of bamboos. Disturbance of conifer-logging two decades ago promoted the species diversity, but negatively influenced the survivorship of dwarf bamboo which is dominate on the forest floor. Open shrubs bear more species diversity and more geophytes in its life-form spectrum than its background vegetation subalpine meadow, however, dwarf bamboo is growing much better in the open shrubs than in the meadow. It seems dwarf bamboo probably favorites to occur in the vegetation at gentle slopes with a mediate canopy cover. Its mass flowering in the secondary deciduous forest suggests that a simultaneous flowering and following dieback maybe irrupt in the recently coming years over the subalpine Shennongjia in China, which will be not only alter the floristic composition and community structure of the old bamboo stands, but also influence the survivorship of this rare species. Biography: Li Zhao-hua (1964-), male, Ph. D Candidate in the Ceter for Development Researches (ZEF) of Bonn University, ZEF, Bonn University, Walter-Flex-Str. 3, D-53113 Bonn, Germany. Responsible editor: Chai Ruihai     

长白山国家级自然保护区森林火灾现状与对策

针对吉林长白山国家级自然保护区森林防火工作的特点,分析了森林火灾的特殊性,指出了森林防火工作存在的问题,并提出了相应对策与建议.     

湖南小溪国家级自然保护区蕨类植物区系研究

在文献和实地调查基础上,统计分析了小溪国家级自然保护区蕨类植物区系特征及其与相邻区系间的关系。结果表明:(1)该区蕨类植物丰富,共有蕨类植物34科、77属、273种(含变种),优势科为鳞毛蕨科、水龙骨科、蹄盖蕨科等5科,优势属为鳞毛蕨属、蹄盖蕨属、铁角蕨属等18属,但属内分化程度较低;(2)科和属的地理成分均以热带成分为主,说明小溪与热带联系紧密,但种的地理成分以温带性质的亚热带山地成分为主,其中尤以东亚成分中的中国—喜马拉雅型占绝对优势(占小溪总种数的38.5%);(3)在相邻6个蕨类植物区系中,物种的丰富程度由高到低依次为井冈山、梵净山、壶瓶山、小溪、八大公山、猛洞河;小溪蕨类植物区系与壶瓶山、梵净山蕨类植物区系关系密切,与八大公山、井冈山蕨类植物区系关系较为密切,与猛洞河蕨类区系关系较疏远。     

福建泉州湾河口湿地自然保护区生态问题及对策

泉州湾河口湿地自然保护区地处泉州湾内湾,属于典型的潮汐河口水陆边缘地带,是全市重要的自然生态资源,但随着全市经济的快速发展,其面临的压力也日益增大。因此,如何搞好泉州湾湿地资源的保护、建设和管理,是当前人们面临的重要生态问题。文章就保护区的有关生态问题提出了相应的见解,目的在于为建立和完善泉州湾的浅海岸生态系统提供一些有价值的借鉴。     

福建闽江源国家级自然保护区长柄石杉群落结构与物种多样性分析

对福建闽江源国家级自然保护区长柄石杉群落的植物组成、生活型谱、垂直结构和物种多样性进行了调查分析,结果表明:群落有维管植物83科154属198种,生活型谱显示群落包括藤本在内的高位芽植物占总种数的66.67%,其中以小高位芽和矮高位芽植物占优势;地下芽也占一定比例,达14.14%,且以蕨类植物为主。群落垂直结构分化明显,分为乔木层、灌木层、草本层。物种丰富度指数、Simpson指数、Shannon-Wiener指数和Pielou均匀度指数分析表明:群落草本层与灌木层的物种丰富度、物种多样性指数明显大于乔木层与层外层,而群落各层次的均匀度无显著差异。     

福建省九阜山自然保护区竹类植物资源与开发利用

福建省尤溪县九阜山自然保护区竹类植物资源共有9属23种,主要的竹林类型有毛竹林、福建酸竹林、箬竹林、苦竹林。列出了每种竹类植物的属名、学名、用途、生境及分布海拔,并提出开发利用建议。     

"福州之肺"--福州国家森林公园

福州国家森林公园是在创建于1959年的福州树木园的基础上建立起来的。她位于福州北郊,总面积4.2万公顷,属南亚热带北缘低山丘陵地貌,公园三面环山,南临八一水库,距市中心7公里。1988年经原林业部批准建立“福州森林公园”。1993年又批准为“福州国家森林公园”。是福建省首家国家级森林公园,已故的原全国人大常委会副委员长方毅同志为公园题写了园名。同年,经省编委批准增挂“福建省园林绿化中心”牌子。福州国家森林公园具有丰富的旅游资源。由于地理环境和森林的防护效应,形成了园区内特有的小气候。这里冬暖夏凉,夏季平均气温比福州市区…     

黑龙江牡丹峰国家级自然保护区的特征与经营管理措施

系统阐述了牡丹峰自然保护区的自然地理特点与主要保护对象 ,对保护区进行了综合评价 ,并针对保护区的保护现状提出了具体的建议和经营管理措施     

Carbon storage of a subtropical forest ecosystem: a case study of the Jinggang Mountain National Nature Reserve in south-eastern China

The carbon cycle of forest ecosystems plays a key role in regulating CO2 concentrations in the atmosphere. Research on carbon storage estimation of forest ecosystems has become a major research topic. However, carbon budgets of subtropical forest ecosystems have received little attention. Reports of soil carbon storage and topographic heterogeneity of carbon storage are limited. This study focused on the Jinggang Mountain National Nature Reserve as an example of a mid-subtropical forest and evaluated soil and vegetation carbon storage by field sampling combined with GIS, RS and GPS technology. We classified the forest into nine forest types using ALOS high-resolution remote sensing images. The evergreen broad-leaved forest has the largest area, occupying 26.5% of the total area, followed by coniferous and broad-leaved mixed forests and warm temperate coniferous forest, occupying 24.2 and 22.9%, respectively. The vegetation and soil carbon storage of the whole forest ecosystem were 1,692,344 and 5,514,707 t, with a carbon density of 7.4 and 24.2 kg/m^2, respectively, which suggests that the ecosystem has great carbon storage capacity. The topographic heterogeneity of the carbon storage was also analysed. The largest vegetation storage and soil storage is at 700–800 and 1000–1100 m, respectively. The vegetation carbon storage is highest in the southeast, south and southwest.     

福建省闽江源国家级自然保护区钟萼木群落特征研究

采用随机样地调查法,对福建省建宁闽江源国家级自然保护区钟萼木群落进行调查,结果表明:该群落物种较丰富,共有植物39种,隶属于26科34属;Shannon-Wiener多样性指数为1.89,Pielou均匀度指数为0.33,Simpson生态优势度指数为0.52;钟萼木在该群落中处于优势种地位,其伴生物种较丰富,但伴生树种间的关系不稳定。     

云南大围山国家级自然保护区种子植物区系多样性特征

报道大围山种子植物区系的研究结果:大围山内现有野生维管植物238科1 121属3 299种,分别占全国维管植物总科、属、种数的65.38%、34.92%、12.15%.其中种子植物188科994属3 027种及变种,平均种密度高达19.69种·km-2,是全国植物物种多样性最丰富的自然保护区之一.区内种子植物的古老性、珍稀性、多样性和完整性极具代表性.其种子植物区系具有4个显著特征:1)种类组成丰富,属内种系相对贫乏,分化程度较弱;2)植物区系起源古老,古老的特有属丰富;3)大围山是多种区系成分的交汇地带,但热带分布的科占绝对优势;4)大围山植物区系与中南半岛特别是北部湾植物区系的联系紧密,同时与东亚植物区系亦有密切联系.     

武夷山自然保护区可持续经营对策

总结了福建武夷山自然保护区生物多样性保护与社区经济协调发展的经验,针对当前发展中存在的问题,从政策、技术方面,提出可持续经营对策。     

福建将石自然保护区野生观赏植物研究

对福建将石自然保护区野生观赏植物按观花、观果、观叶、垂直绿化和岩石植物5类进行统计和资源评价,并对长叶榧(Torreyajacki)、小紫槭(Acercordatumvar-microcordatum)、亮叶腊梅(Chiomo nanthusnitens)、福建野鸦椿(Euscaphisfukienensis)、乌冈栎(Quercusphillyraeoides)、红凉伞(Ardisiacrenatavar-bicolor)和马醉木(Pierispolita)进行生态学特性和园林用途研究与评价,为这些野生观赏植物的开发利用提供依据。     

四川白水河国家级自然保护区植物群落分布和优势种

通过野外植被调查,并根据《四川植被》分类的原则和依据,四川白水河自然保护区自然植被可分为6个植被型11个群系纲和25个群系。其中,1 400～2 000 m海拔段主要分布有14个群落类型,2 000～2 500 m分布有3个群落类型,2 500～3 000 m分布有3个群落类型,3 000～3 500 m分布有9个分布类型,3 500～4 000 m有4个群落类型分布,4 000～4 800 m有2个群落类型。通过重要值统计不同海拔段各个群落类型的乔木、灌木和草本层的优势种。建议通过建立有效保护体系、加强宣教、监测管护和科学研究达到对保护区植物植被资源的保护。