Yongshun County Sheep Mountain Of Valerian Resources And Ecological Habits

The wild valeriana officinalis resources are riched in the Yang feng mountain of Yongshun county. This study combined the field investigation and laboratory analysis.Researching on the distribution, breeds, climate adaption and the environmental soil physicochemical property of the valeriana officinalis in the Yangfeng mountain of Yongsun county to know about the life habit and the ecological environment,and further to supply the basic theory for domestication and cultivation of valeriana officinalis. The main results as follow:1. The main two breeds of valeriana officinalis are broadleaf and thin leaf. Most are the broadleaf valeriana officinalis which are 59.2%of the total plants, while the thin leaf valeriana officinalis are 40.8%.179. On the research, the author found that the growing become more and more slow and shorter of the plants with the attitude increasing,also the heights of valeriana officinalis are descending from the attitude 700m to the mountain peak 1700m.During the investigation, the author also found that the highest plant of broadleaf valeriana officinalis with a sunny exposure reached 1.2m at the attitude of 710m, while the shortest plant of thin leaf valeriana officinalis under the shadow of mountain slope at the attitude of 1570m reached 3.7m.The thin leaf likes the shadow while the broadleaf likes sunny. As a result of the no significant differences of cold-hot factors in semi-southward and semi-northward, the broadleaf valeriana officinalis and thin leaf valeriana officinalis grow together.The cover degree and density of valeriana officinalis are different, but there is not significantly different in orderlineness.2. Surround the valeriana officinalis,the main associated species are stipa copillacea, Miscanthus sacchariflorus, Crotalaria sessiliflora, Commelina communis, Populus shanxiensis, Solena amplexicaulis (Lam.)Gandhi, Pueraria lobata。The order of valeriana officinalis and the associated species:valeriana officinalis> stipa copillacea> Miscanthus sacchariflorus> Commelina communis> Crotalaria sessiliflora> Populus shanxiensis> Solena amplexicaulis (Lam.)Gandhi。This indicated that stipa copillacea are competitive with valeriana officinalis for resources in the community。These breeds are associated with each other and distribute in shrub layer and herbaceous layer. Their biological characteristics are similar to each other and the requirements to the habit are also analogous.3. The growing period of valeriana officinalis is short which concentrate on March, April, May, October, November. The sunshine duration at most is no more than 174.6 hours. The humidity is 70% and the even temperatures are7.4℃-23.5℃precipitation 20.3mm—468.1mm which are best conditions for the growing of valeriana officinalis.4. Local soil moisture contents are between 20%-40%, little part of which reaches more than 40%that are mainly in the bank of stream. The soil samples are acidic or weaker acidic. The affects of organic matter, nitrogen, phosphorus, potassium to the dominance of valeriana officinalis are not significant which are below 0.1.The are positive correlation with the soil PH value. And the dominance of valeriana officinalis descends with the increasing of soil nutrition.