Typification and Nomenclature Notes on Twenty-Nine Names in (Asparagaceae).

Nomenclatural types for twenty-nine names belonging to the genus are typified and discussed. The following names are lectotypified: Engl. & Gilg, Munby, Engl.

[Activity patterns and foraging behavior of Apis cerana cerana in the urban gardens in winter].

Bees and other pollinating insects are the important parts of biodiversity due to their great role in plant reproduction and crop production. To explore the role of city garden in native bees conservation, activity patterns, visiting behaviors and flowering plants with nectar or pollen were recorded in south Sichuan in winter. The results showed that, worker bees (Apis cerana cerana) were active to collect food out hive under suitable weather conditions, the duration of working was long.

[Soil phosphorus form and fractionation scheme: a review].

As an essential element of plant nutrition, phosphorus plays an important role in the agricultural sustainable development and ecosystem balance. Adopting appropriate soil phosphorus fractionation scheme to study the forms, transformation, and availability of soil phosphorous is critical for understanding soil phosphorus supply and its losses. This paper reviewed the recent researches about the forms of soil inorganic and organic phosphorous, as well as their fractionation schemes and limitations.

[Sabina przewalskii community structure in the upper reaches of Minjiang River].

In this paper, the physiognomy and the structure of Sabina przewalskii community were studied by sample plot method. The results showed that in the life spectrum of the community, hemicryptophyte was dominated, but therophytes also occurred frequently, which presented some features of temperate vegetation. The vertical structure of the community was quite simple, consisting of tree layer, shrub layer and herb layer, and there were no interstratum plants and ground layer.