| On the basis of the reseach of wild herb plants on the campus of North East Foresty University,this paper select Glechoma hedracea and Viola yeodensis and studied their biology characteristics,ecology habits.ecology benefits and landscape effects by means of fixed position observation and laboratory analys ways.The results are as follows:l.G.hedracea turns green in Apr. in Haerbin,.It's florescence is in late Apr. to the middle of June,and it becomes withered and yellow in the midlle of Oct.. V.yeodensis turns green in middle of Apr.,It's florescence is in early May to middle of June and it becomes withered and yellow in the middle Sep.Both two have long green period and good ornerment effect.2.In the spring ,the root biomass assignment is the highest in both two species,and the value are 36.76% and 57.73% respecially.after which.it is keep on increase. It reaches the highest value 47.86% in summer,then it reduced extremely. However the root biomass in V. yeodensis is continue to reduce and reches its lowest value(19.15%) in Autum.3.1n florescence,the nurtrient elements content in the flower is the highest in two species.and it in the leaves is the highest in other two seasons. The nurtrients's chang trends with seasons is similar to the biomass.4. They can make the full of effective light energy reflection. They can grow not only in the sun but also in the shade.5. G.hedracea and V.yeodensis both have good drought-enduring capability,but the capability of G.hedracea is better.6.1n the sun Glechoma hedracea can release oxygen 48.856g mV,and absorbed caloric 20505.7KJ m-2d-1. It can hold up dust l.068g every weeks.V. yeodensis can release oxygen37.646 g m-2d-1 ,and absorbed caloric 18748.75KJ m-2 d-1 . It can hold up dust 6.49g every weeks.They have the ability to improve the quality of environment.T.G.hedracea blooms in May.The flower is light blue. It grows covering the ground after blooming which can be the background of the green rug. V.yeodensis has a longer florescence. The flower is lovely,which can be distributed on the lawn or plant-cover with narrow leaves.This paper study systemly on this two species which afford the frame of the study on cove plants. |
