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在中国534个竹子种类中，遴选了153种笋用竹。其中刚竹属、箭竹属、牡竹属、寒竹属、香竹属和绿竹属占据笋用竹种类的78％。在笋用竹中，56种具有商业价值，其中的16种具有世界市场。通过对所有笋用竹的商业价值、形态特征、生态特征和种植特点的种植潜力指数评价，将笋用竹分为5个类别：第一类（9种）具有很高的商业价值，大面积种植前景，第二类（33种）可以区域性种植。 相似文献
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In the Shennongjia National Nature Reserve of Central China, the vegetative growth behavior of henon bamboo (Phyllostachys nigra var.henonis (Mitford) Stapf. ex Rendle) was studied from shoot recruitment to culm establishment. In May, bamboo shoots emerging from
the ground achieved an average density of 2.7 shoots m−2 during the sprouting phase of 16 days. However, about 32% of the new shoots died back before maturity. Insect damage, withering
death and rodent predation were responsible for 57%, 29% and 14% of the total shoot mortality, respectively. From May to June,
the shoots attained 400±23 cm during the height growth phase of 34 days, with a daily rate varying from 1 to 56 cm. All branches
and leaves unfolded during the branch spreading phase from June to August. Shoot production was positively related to the
density of standing culms, but negatively to both coverage and height of herb layers.
Foundation item: This research was financed by the Center for Development Research (ZEF) of the University of Bonn, Germany (P. 52015), the
National Natural Science Foundation of China (No. 30470284) and the Scientific Research Foundation for the Returned Overseas
Chinese Scholars (No. 2004-527).
Biography: Li Zhao-hua (1964-), male, Doctoral of Natural Science (Bonn University), Professor of Ecology (Hubei University, Wuhan
430062, P. R. China).
Responsible editor: Chai Ruihai 相似文献
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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 相似文献
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发展竹浆造纸 节约木材资源 总被引：4，自引：0，他引：4
随着社会经济水平的发展,中国纸及纸板的现有产品结构已不适应纸张消费市场的变化与发展,加剧了国内市场对进口纸及纸板的依赖性。竹材纤维细长,是制浆造纸的优质原料。竹浆纸的开发有利于节约木材资源,有利于环境保护。中国竹资源丰富,发展竹浆造纸的市场前景非常广阔。因此,在造纸工业中实现以竹代木,建立林纸一体化的竹浆生产基地,将成为节约木材资源,减少纸及纸浆的进口,使制浆造纸工业得以持续发展的有利途径。 相似文献
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Mao'ershan region is representative in the natural secondary forested region of the eastern mountainous region, northeast
China. The landscape nearest neighbor index and landscape connectivity index were calculated with ARC/INFO software for Mao'ershan
region. The spatial distribution of the landscape of the region was analyzed. The results showed that the landscape connectivity
index of non-woodland was significantly higher than that of woodland. The landscape connectivity index of natural forest was
nearly equal to zero, which means its fragmentation degree is high. The nearest neighbor index of plantation was lower than
that of natural forest and non-forestland. Among the man-made forests, the distance index of the coniferous mixed plantation
is the lowest, and its pattern is nearly glomeration. The landscape pattern of natural forest presented nearly random distribution.
Among non-forest land, the distance index of cut blank was the lowest, and its pattern was also nearly glomeration.
Foundation item: This paper was supported by the Key Project of State Department of Science Technology (2002BA515B040).
Biography: LI SHu-juan (1977), female. Lecture in Ocean University of China, Qingdao 266003, P. R. China.
Responsible editor: Zhu Hong 相似文献
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借鉴"三生共赢"的理念,文中首先梳理田园综合体的概念、国内外发展研究状况及其植物种植应用;再以河南省唐河县"福星田园"为例,通过实地调研、资料统计等方法分析其现状,采用单一种植、多样混植、单一为主多样为辅的3种种植方法,将单一功能的莲产基地打造为集多功能于一体的综合型园区,将场地零散土地整合打造成多样化的特色果园,挖掘与"福"字相关的葫芦、梅花、竹等植物打造福星文化广场,将单一种植的艾叶基地打造成康体疗养基地;最后总结适合田园综合体的特色植物选择、种植及多功能协调方法,为我国田园综合体植景营造提供参考。 相似文献
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西双版纳自然分布竹类资源19属60种,天然竹林面积14 317hm2,占西双版纳总面积的5.92%是中国乃至世界上竹类资源最为丰富的地区之一。中国科学院西双版纳热带植物园从20世纪60年代初就开始进行竹类资源的种类与分布、人工栽培与利用以及迁地保护等方面研究,并在园内建立了一个面积为8 hm2竹类资源迁地保护区。到目前为止,已从中国热区和东南亚国家收集保存竹类资源27属211种,现已有11种开花结果,用其种子繁殖育苗并栽培同一区内,长势较好,该竹类资源的迁地保护已成为中国从事竹类资源植物研究与保护的重要基地,并为地方经济的发展提供重要的资源贮备。 相似文献
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以湖北省杉木主要栽培区的92块标准地优势木解析资料为基础数据,利用7种理论生长方程以及其中5种模型的差分方程进行优势高生长模型的拟合,选择较优树高生长模型分别采用导向曲线法和差分方程法编制立地指数表,并通过检验和对比分析选择较适于本地区杉木人工林立地指数表的编制方法和类型。结果表明:理论生长方程及其差分方程构建的树高生长模型均具有良好的拟合优度,两者的决定系数分别超过了0.85和0.98,经模拟检验和残差分析,后者拟合精度明显优于前者,而理查德理论模型及其差分方程均优于其他生长方程构建的模型。选择理查德模型和考尔夫模型差分方程为基础方程,以20a为标准年龄和2m为指数级,分别采用相应的导向曲线法和差分方程法编制单形和多形立地指数表,两者均达到了显著性检验,但多形立地指数表预测精度更高,更适于湖北省杉木人工林的立地评价。 相似文献
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Bark samples ofMagnolis officinalis were collected from a 7-year-old trial plantation with 13 provenances in Jingning County of Zhejiang Province on June 25,
2000. The contents of magnolol and honokiol ofM. officinalis were analyzed by the method of HPLC (High Performance Liquid Chromatogram). The results showed that such qualitave traits
as the content of magnolol, content of honokiol, total content of key phenol, and the ratio of magnolo to honokiol differ
significantly between the provenances. The provenances with a sharpened leaf tip from the western part of Hubei Province has
a highest content of phenols, and that with a concave leaf tip from the Lushan Mountain has a lowest content of phenol. All
these four qualitative traits were genetically controlled, with a heritability between 0.8342 and 0.9871 in terms of provenance.
In addition, both longitudinal and latitudinal geographical variations could be found, with longitudinal variations being
dominant. As a result, 3 superior provenances from Wufeng, Enshi and Hefeng of the western part of Hubei as well as 10 high-quality
individuals were
Foundation Item: This paper was supported by the “Ninth-Five” Plan of Zhejiang Scientific and Technological Commission (No. 961102111).
Biography: TONG Zai-kang (1963-), male, Associate professor in Zhejiang Forestry College, Lin’an 31300, P. R. China: and presently
doctoral student in Nanjing Forestry University.
Responsible editor: Song Funan 相似文献
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The exoticSonneratia apetala in Leizhou Peninsula, has shown outstanding fast-growing ability in restored mangrove forests, at the middle and high tide
intertidal zone, with year-round fresh water input from drainage. By setting plot and selecting standard tree, investigation
and measurement on height growth, diameter growth, biomass, productivity, and so on, were made in aS. apetala plantation at age of six at Lanbel, Fucheng, Leizhou Peninsula in May 2001. The investigating results showed that the mean
annual height growth of plantation was 2.03 m and mean annual growth of diameter at breast height (DBH) was 2.35 cm. There
exists a significant correlation between the diameter at ground surface (DGS) and DBH. The average biomass of a single standard
tree in dry weight was 95.647 kg/m2. A ratio of above-ground biomass to under-ground biomass was 1.60. The stand biomass of unit area was 22.955 kg/m2, singletree wood volume was 88.23 dm3, and the annual wood volume productivity (P
A) of the same year was 0.407. The forest energy accumulation was 424.851 MJ/m2, with annual solar energy fixing rate of 40.68×10−7%. It is concluded thatS. apetala species had characteristics of outstanding high biomass accumulation and could be used as coastal planting tree species in
southern China.
Foundetion item: The paper was supported by the project of integrated mangrove management and coastal protection (IMMCP) in Leizhou Peninsula,
Guangdong Province.
Biography: Han Wei-dong (1963-), male, associate professor, in Zhanjiang Ocean University, Zhanjiang 524088, Guangdong; and presently
as postdoctoral researcher in Life Science College, Xiamen University, Xiamen 361005, Fujian, P.R. China
Responsible editor: Zhu Hong. 相似文献
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LIU Zu-gen ZHU Jiao-jun HU Li-le WANG He-xin MAO Zhi-hong LI Xiu-fen ZHANG Li-jun 《林业研究》2005,16(3):193-199
In order to understand the effects of thinning on microsite conditions and natural regeneration in the larch plantation, thinning experiment was conducted in a 40-year-old Larix olgensis plantation in Qingyuan County in eastern Liaoning Province, China in 2003-2004 Five thinning treatments （0%, 10.2%, 19.8%, 29.7% and 40.3% thinned） were designed on the same site. After thinning, canopy openness and the microsite conditions such as photosynthetic photon flux density （PPFD）, soil moisture content, and soil temperature were measured in one growing season. Meanwhile, the investigation of natural regeneration was conducted at the end of the growing season. The results showed that the canopy openness increased with the increase of thinning intensities. PPFD and soil temperature and soil moisture content in different soil layers were positively relative with canopy openness after thinning. The richness of regenerating tree species did not significantly increase （p=0.30） after one growing season since thinning, but the regeneration density and frequency of tree species increased significantly （p〈0.05）. In addition, the number of regenerating tree species increased, and the increment was correlated with the characteristics of iudividual tree species. The increasing percentage of regenerating seedlings of the shade-intolerant tree species was more than that of shade-tolerant tree species. Among the investigated regeneration species, the biggest response of seedling emergency to the canopy openness was Phellodendron amurense. This paper confirmed the following conclusions： after thinning, the variety of regenerating tree species was correlative with the characteristics of regenerating tree species, and the distribution of unthinned trees and the site conditions in the investigated larch plantation were the additional factors influencing, the regeneration. 相似文献
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建筑在中国墨西哥竹子技术转移中的作用——对乡村旅游业的直接影响 总被引：1，自引：0，他引：1
竹子作为一种可产出功能最多样产品的植物,因其经济、生态和社会效益被国际社会广泛认可。但整体而言,全球竹产业仍处于发展初期,没有哪一个国家充分实现其产业潜力。竹材作为一种建筑材料,被证明是振兴欠发达地区强有力的先锋,是发展乡村旅游的主要抓手。文章对比了中国和墨西哥的竹产业发展现状。中国虽然是世界第一的竹子生产国,但仍有许多社区因快速的城市化而在减少其竹资源;而在墨西哥,虽然有理想的生态环境和市场条件,但由于缺乏联邦政府的支持,竹产业仍然不发达。在这两种产业状况下,竹建筑将成为进一步促进竹子发展的关键工具。文章以中国的2个竹建筑建设项目为例阐述了竹建筑在发展乡村旅游中的作用。在墨西哥,竹建筑可以作为从中国引进竹技术的桥梁,也有助于新政府实施政治体制改革,加强民族认同感。文章认为,无论是竹产业处于起步阶段的墨西哥,还是竹产业相对完善的中国,建设具有吸引力的竹建筑对于振兴乡村旅游都是可行的,同时可以激发当地居民管理其竹资源的热情。 相似文献
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Collapse-type shrinkage is one of highly refractory drying defects in low-medium density plantation-grown eucalypt wood used as solid wood products. Basic density (BD), microfibril angle (MFA), double fibre cell wall thickness (DWT), proportion of ray parenchyma (RP), unit cell wall shrinkage, total shrinkage and residual collapse, which are associated with collapse-type shrinkage characteristics, were investigated by using simple regression method for three species of collapse-susceptible Eucalyptus urophyll, E. grandis and E.urophyllaxE.grandis, planted at Dong-Men Forest Farm in Guangxi autonomous region, China. The results indicated that : unit cell wall shrinkage had a extremely strong positive correlation with BD, moderately strong positive correlation with DWT, and a weakly or moderately negative correlation with RP and MFA; total shrinkage was positively correlated with BD, DWT and RP and negatively related to MFA, but not able to be predicted ideally by any examined factors alone owing to lower R^2 value (R^2≤0.5712); residual collapse was negatively correlated with BD and DWT, linearly positively correlated with MFA, and had strongly positive linear correlation with RP. It is concluded that BD can be used as single factor (R^2≥0.9412) to predicate unit cell wall shrinkage and RP is the relatively sound indicator for predicting residual collapse 相似文献
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关于云南竹类植物多样性及其保护研究 总被引：21，自引：0，他引：21
云南省是世界竹子种类最多、生态类型和天然竹林最丰富的地区之一。本文对云南竹类植物多样性的5个特征，即珍稀种质资源多样性、区系地理成分多样性、天然竹林类型多样性、生态竹林景观多样性、少数民族文化多样性进行了系统研究，论述了与周边地区（东南亚、南亚次大陆、珠江流域、长江流域和喜马拉雅山区等）的密切联系及内在分布格局等，提出了加强云南竹类植物多样性保护和利用的相关措施。作者建议将开发利用价值较高的世界性珍稀濒危竹种，建议列入我国保护植物名录，由国家自然科学基金立项资助进行专题研究，并给予专项资金在全国建成三大种质资源引种保存和试验研究基地。 相似文献
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文章在介绍小型竹种作为地被的作用的基础上,介绍了几种适于北方栽培的小型竹种。
相似文献