1. The population of Sabina vulgaris are mainly typical mesophyte, secondly the xerophytes, super- xerophytes; the proportion of Phreatophyte is very small.

2. The species of mesophyte are the most of ecological type of water that take 79% and those of mesohydrophyte take 8%.

3. The species of mesophyte dominates the ecological type of water, making up 51%, and the mesoxerophyte 34% of the total.

4. The species of mesophyte are the most of ecological type of water and those of xerophyte take 7.51%. The volcanic landform has a profound influence on plant diversity.

5. The results showed that the leaves of W. indica exhibited morphological characteristics of xerophytism, heliophyte with mesophyte.

6. Gramineae life form was made up of perennial plant and annual plant and the ecotype was consisted of mesophyte and xerophyte.