运用样地调查法对广东东莞银瓶山自然保护区乡土木本植物进行调查研究。结果表明:(1)银瓶山自然保护区乡土木本植物种类丰富,2 hm2样地共有乡土木本植物45科83属111种,优势科为樟科、山茶科、大戟科、茜草科、鼠李科和芸香科;(2)银瓶山乡土木本植物属的分布类型共10种,个体数量最多的前6个种类分属于泛热带分布、热带亚洲和热带美洲间断分布、热带亚洲(印度-马来西亚)分布,以及东亚和北美洲间断分布区类型;(3)根据样地内木本植物种类出现频度高低及重要值大小,结合属的分布类型,认为木荷、九节、银柴、豺皮樟、鸭脚木、鼠刺和华润楠是具有推广引种潜力的乡土木本植物。

Sample-plot survey method was used to study the indigenous woody plants of Yinpingshan Nature Reserve from Dongguan of Guangdong, China. The results showed that: 1) there were 111 species belonging to 83 genera, 45 families in the 2 hm2 sample plot, which indicated there was richer indigenous woody plant species in the Nature Reserve. Among the species, Lauraceae, Theaceae, Euphorbiaceae, Rubiaceae, Rhamnaceae and Rutaceae were the dominant families. 2) The indigenous woody plants belonged to 10 areal-type of seed plant genera in Yingpingshan Nature Reserve. The mainly areal-types were pantropical, Trop. Asia&Trop. Amer. Disjuncted, Trop. Asia (Indo-Malesia), and Asia&Amer. Disjuncted. 3) According the species richness and importance value, and combined with the areal-type of seed plant genera, the introduction potential species were the dominant species, i.e. Schima superba, Psychotria rubra, Aporosa dioica, Litsea rotundifolia var. oblon, Schefflera octophylla, Itea chinensis, and Ma

木本植物再生植株生根是组织培养植株再生体系建设和快繁技术的瓶颈。笔者从植物生长调节剂、内源激素、植物生长势、酚类化合物、多胺、金属元素、基因转化及其它因素等8个方面综合论述了木本植物再生植株生根的影响因素,并通过多年的林业经验,总结再生植株生根率提高的主要因素,为实现木本植物再生植株生根的工厂化繁育和乡土树种快速繁育提供借鉴。

Rooting on the plant regeneration of woody plant was the bottleneck on tissue culture construction system of plant regeneration and rapid propagation technology .Plant growth regulator , endogenous hormon , growth vigor , phenolic com-pound, polyamine, metallic element and gene transformance and so on were discussed comprehensively influence factors of rooting on regeneration plant of woody plant .Through the years of forestry experience , the main influence factors of rooting rate of plant regeneration were analyzed to provide reference for the rapid breeding of native woody plant and factory breeding .

TDZ（thidiazuron,噻二唑苯基脲）是人工合成的苯基脲衍生物,在植物（尤其是木本植物）的愈伤组织诱导、芽的再生、体细胞胚胎发生、原生质体培养等过程中具有重要的作用,被广泛应用于植物组织培养。桑树作为一种多年生生态、经济型木本植物,其多用途综合利用已成方兴未艾之势。随着桑树基因组测序的完成,桑树转基因体系已成为制约桑树功能基因组研究的瓶颈。鉴于桑树再生频率相对较低,本文在分析了TDZ促进木本植物再生的基础上,提出TDZ在建立和完善桑树再生体系中的作用和应用前景。

TDZ (thidiazuron) ,one of synthetic phenyl urea derivatives ,plays an important role in callus induction , shoot regeneration , somatic embryogenesis and protoplast culture of plants ,especially woody plants ,and is widely used in plant tissue culture .The multipurpose utilization of mulberry ,a perennial ecological and economic woody plant ,has become a prev-alent trend at present .With the completion of mulberry genome sequencing ,mulberry im-mature genetic transformation system has constituted a bottleneck for mulberry functional genomics research .Given the relatively low frequency of shoot regeneration of mulberry , this paper provides a comprehensive review of the functions of TDZ in regeneration of woody plants ,and discusses its roles in establishing and improving mulberry genetic regeneration systems and the prospect of its application .

通过对3 600 m^2的大样地进行调查,对杉木老龄林群落的种—面积关系进行分析,结果表明：巢式样方法与组合样方法所绘出的群落所有木本植物的种—面积曲线变化趋势基本一致,乔木层与灌木层的种—面积曲线变化趋势存在一定差异,不同方法与不同层次的种—面积曲线均呈现出物种数目随样地面积的增大而增加的趋势;群落所有木本植物、乔木层及灌木层的最小取样面积在（1 000-1 200）m^2、（700-900）m^2和（1 200-1 300）m^2;遴选出拟合杉木老龄林群落所有的木本植物、乔木层及灌木层种—面积关系较好的模型。

We established 3 600 m2 large plot to study the species-area relationship on old Chinese fir plantation .The changing trend of species-area curve for the community based on the nested plots method and quadrates combination method are al -most the same , while there are differences in the trees layer and shrubs layer , then the number of species increases with the increasing of sample area in both two methods and levels .Minimum sampling area of community , trees layer and shrubs layer are about 1 000-1 200 m2, 700-900 m2, and 1 200-1 300 m2.Model 2 and 6 (R2>0.81) are the best in fitting the species-area relationship of the community total woody plants , tree layer and shrub layer in the old Chinese fir plantation .

以臭椿（Ailanthus altissima）、构树（Broussonetia papyrifera）、大叶黄杨（Buxus megistophylla）和紫穗槐（Amorpha fruticosa）4种抗污染木本植物苗木为材料，在盆栽条件下设置0、250、500、1000和2000 mg·kg^-1 5个锑的质量分数梯度，分析胁迫过程中苗木苗高、地径、生物量、耐性指数、相对叶绿素含量、POD活性和SOD活性等指标的变化，探讨这4种苗木对锑胁迫的生理响应，并通过测定苗木地上、地下部分锑的质量分数，明确这几种植物对锑的积累特征，以期为锑污染植物修复材料筛选提供理论基础。结果表明：在不同质量分数锑胁迫下，4种木本植物的苗高、地茎、生物量及耐性指数出现不同程度的下降，其中大叶黄杨在不同质量分数锑处理下的耐性指数均大于90%，表现出对锑较强的抗性。除大叶黄杨外，在中、中高质量分数（500、1000 mg·kg^-1）锑处理后，其他3种木本植物叶片叶绿素含量较对照均显著下降。而在高质量分数锑胁迫下，4种木本植物的叶绿素含量与对照相比均显著下降，表明锑能通过影响植物的光合作用来降低这4种木本植物的生物量合成。在中高质量分数锑胁迫下，4种植物根系的POD和SOD活性均呈现不同程度的增加；在高质量分数锑胁迫下，臭椿、构树和紫穗

The height, ground diameter, biomass, relative chlorophyll content, tolerance index and the activities of POD and SOD of 4 kinds of antipollution woody plant seedlings of Ailanthus altissima,Broussonetia papyrifera, Buxus megistophylla and Amorpha fruticosa growing on containers with five soil antimony (Sb) mass fraction (0, 250, 500, 1 000 and 2 000 mg·kg-1) were examined to explore the physiological response of these plants to Sb stress. Mass fraction of Sb in both aboveground and underground part of these plants were also measured to understand the accumulation characteristics of these plants under Sb stress. These researches would provide a theoretical foundation to select plant materials for Sb phytoremediation. The result showed that the height, ground diameter,biomass and tolerance index of all these four species decreased with the increase in Sb mass fraction. Except for Buxus megistophylla, the chlorophyll contents of other three species were significantly reduced u