Genetic diversity and structure of 15 populations of Phragmites australis growing in the Yellow River Delta and wetlands nearby were investigated using starch gel electrophoresis. Analysis based on 17 enzyme loci coding for 8 enzyme systems showed that there exists a high level of genetic variability in P. australis. The proportion of polymorphic loci is 49.0%, the average number of alleles per locus is 1.53, and the average expected heterozygosity is 0.221. The genetic diversity was found within populations rather than among populations (GST=0.226). A high level of clonal diversity was indicated in this species with PD (proportion distinguishable variations, PD=0.53). The size of different clones, however, varied significantly. The clonal structure analysis demonstrated a clear genetic mosaic. There is a negative correlation between salinity and growth rate of the reeds. Genetic distances were positively correlated to the geographical distances among populations of P. australis. The populations in saline habitats have become differentiated from their freshwater counterparts.

简要介绍了日本横滨国立大学教授宫胁昭（Prof. AkiraM iyawaki）创造和倡导的造林法一环境保全林重建法。该方法的理论依据是潜在植被和演替理论，其核心是用乡土树种恢复乡土森林植被（Native Forest勿Native Trees）。该方法在日本、泰国、马来西亚、巴西和中国等国家，用于热带雨林、常绿阔叶林、落叶阔叶林的恢复，已经有近60个成功的例子。山东的森林搜盖率低，森林恢复和造林难度大，宫胁的森林重建法对于山东的森林植被恢复和重建将是很有借鉴和帮助的。

Leaf epidermis of 37 species representing 11 genera of Vitaceae was investigated using light microscopy (LM) and scanning electron microscopy (SEM). The shapes of leaf epidermal cells are usually irregular or polygonal; the patterns of anticlinal walls are straight, arched or sinuolate, The stomatal apparatuses, only present on the abaxial epidermis for all sampled genera excepl Leea, can be assigned into five types. The anomocytic type, occurring in Parthenocissus, Yua, Vitis, Am-pelopsis and Ampelocissus, is common in Vitaceae; whereas the other four types can be considered diagnostic of several genera, such as anisocytic type for Leea, hemiparacytic type for Cissus, Gayrtatia and Tetrastigma, staurocvtic type Rhoicissus, Muscadiania and Tetrastigma, and cy-clocytic type for Tetrastigma. Under SEM the cuticular membrane of the leaf epidermis is striated, scaly or granular, and papillae were only found in Yua austro-orientalis. This study provides leaf epidermal evidence for supporting the establishment of Leeaceae as a distinct family, and the separa-tion of Yua from Parthenocissus as a genus of the Vitaceae. There are two major lineages in Vitaceae (excluding Leea), one comprising Parthenocissus, Yua, Ampelocissus, Ampelopsis, Muscadinia and Vitis mainly with anomocytic stomatal apparatuses and 5-merous flowers, and the other includ-ing Cayratia, Rhoicissus, Ciissus and Tetrastigma mainly with staurocytic, hemiparacytic of cyclo-cytic stomatal apparatuses and 4-merous flowers.

沿海砂生植被子是由一些砂生植物和耐沙和抗干旱的植物组成。主要特点是种类组成简单，群落类型较少，植物的生活型为地下芽植物和一年生植物占优势，主要群落可划分10个群落。构成生态系统初级生产者的植物群落的关键种的分布格局，反应了群落的时空分布格局与群落对砂生栖息地的适应，并在一定程度揭示了生物群落在时间尺度上的演替过程，砂生植物群落是构成沿海特殊景观的主要组成部分，对沙和海岸的可持续发展发挥着独特的作用，合理利用和保护对于该类植被和植物资源具有重要的意义。

根据植物对大气污染的反应方式来选择城市绿化树种是减轻大气污染物的重要途径和手段. 通过观察污染地区绿化树种叶片的受害症状来判断植物对以氯为主要污染物的抗性程度，根据植物对其污染物的反应特性划分植物的抗性等级，筛选出对以氯为主要污染物的抗性植物种类和敏感监测植物种类，从而为绿化植物的合理选用提供依据* 结果表明，抗性树种有：花曲柳、桑树、皂角、旱柳、柽柳、忍冬、枸杞、水蜡、紫穗槐、桂香柳、叶底珠、卫矛、刺槐、山桃、木槿、榆树、枣树、臭椿；敏感监测树种有：油松、锦带花、榆叶梅、糠椴、山杏、连翘、糖槭、云杉、桧柏、白桦.