我国野生动植物进出口管理中存在的问题及解决途径

随着社会主义市场经济的发展，我国加入WTO后野生动植物进出口管理面临着一些新的挑战，存在的各种问题也越来越突出，已不能适应当前行政管理改革的要求。只有正确认识这些问题，从加强法制建设和改进行政管理两个方面采取积极的应对之策，才能促进我国野生动植物进出口管理的健康发展。     

陕西省龙池自然保护区蚂蚁种类初步调查

陕西省龙池自然保护区蚂蚁的区系组成经调查发现共有30个种,17属,隶属于4个亚科。其中3属6种为陕西省新纪录。     

Invertebrate diversity in newly established mulch habitats in a Midwestern urban landscape

The invertebrate fauna in artificial urban habitats has yet to be systematically investigated. The current field study in central Ohio was undertaken to assess the numbers and types of macroinvertebrates in mulched and unmulched plots during a one-year period. Invertebrates quickly infiltrated the plots with bare soil (control) and any of four types of mulch (shredded hardwood, shredded recycled wood, pine bark mini-nuggets, and pea gravel). One month after establishing the plots, invertebrates were present in numbers comparable to subsequent months. Invertebrates found in the plots were primarily saprophytic taxa: millipedes (32.6%), segmented worms (19.8%), isopods (6.7%), and various beetle families (1.5%). Predatory taxa included centipedes (9.8%), ants (9.7%), carabid beetles and staphylinid beetles (7.3%), and spiders (0.9%). Types of invertebrates were similar in all ground cover types, but numbers of invertebrates differed significantly. Invertebrates were present year-round in mulched plots, and plots with organic mulch harbored significantly more invertebrates than plots mulched with pea gravel. Bare soil always contained the fewest number of invertebrates. There was no significant difference in numbers of invertebrates based on the cardinal side of the building.     

肇庆市不同类型城市绿地土壤动物群落调查

2010年10月-2011年10月,对肇庆市端州区城市公园绿地、街道绿化带和过境国道绿化带3种绿地中的土壤动物群落特征进行了调查,共捕获土壤动物640只,隶属3门7纲18类(目).调查表明,不同城市绿地的土壤动物群落特征存在明显差异:从个体数量上看,公园绿地＞街道绿化带＞过境国道绿化带;从类群数上看,街道绿化带＞公园绿地＞过境国道绿化带;街道绿地和过境国道绿化带的表聚性较为明显.     

Urban areas as hot-spots for introduced and shelters for native isopod species

Isopod assemblages were studied in Budapest, capital of Hungary. The analyses of literary and field data revealed a high species richness (28 species), compared to the total species number (57) in Hungary. Habitats characteristics for the city were categorized as native forests, urban forests, gardens of Buda, gardens of Pest, public parks, densely built-up areas and botanical gardens. We hypothesized that isolated and diverse habitat patches in the city matrix of Budapest support the introduction and establishment of exotic species and the survival of native ones. The composition of assemblages varied among sampling sites, but were characteristic for the biotope categories. We concluded that forests, parks and gardens play an important role in the survival of native isopod populations. Species numbers were highest in the gardens of Buda and in the botanical gardens (both 17 species). The overall presence of cosmopolitan and disturbance-tolerant species indicates an ongoing homogenization process.