Study On The Clonal Growth Of Thymus Serpyllum Population In The Different Habitat Of Huangfuchuan Watershed

Relationship between clonal growth and ecological adaptation of the plant is central issue in the study of plant population ecology. Study on the clonal growth of small half-shrub population Thymus serpyllum developed the field of plant population ecology in breadth and depth, and the studying have vital function in the scientific theory and practice. Three different type of habitat was selected in the Huangfuchuan Watershed. The habitat is separated according to three different soil parent materials, the sandy soil, "pisha" sandstone and sandy loess. Morphological and anatomical characteristics of the clonal organs, regulation of the clonal growth, biomass allocation pattern, co-ecological effect of the small half-shrub population Thymus serpyllum in the recovering succession were studied firstly in the year 2004 and 2005.The main results are showed as follows.1 The soil nutrients and water content of the three different habitat were analyzed, the results showed that, both soil nutrients and water condition of sandy soil were poor (content of organic matter is 0.14%, content of total N is 0.013%, content of total P is 0.0098%, annual average soil water content is 5.13%), soil nutrients condition of the "pisha" sandstone was poor, but its water condition was better (content of organic matter is 0.19%, content of total N is 0.016%, content of total P is 0.0097%, annual average soil water content is 11.95%), soil water content of...