[Percentage of soil absolute moisture content at different succession stages of Castanopsis platyacantha-Schima sinensis formation in central subtropical zone of Sichuan Province].
The temporal-spatial characteristics of the percentage of soil absolute moisture content (PSAMC, defined as the percentage of soil water to dried soil) at different succession stages of C. platyacantha-S. sinensis formation such as brush, 10-, 40-, and 200-years old C. platyacantha-S. sinensis communities were studied, using the methods of orientation observation and variance analysis under the similar conditions including climates, topographies, landforms, and soils. The results indicated that the relationship between soil depth and PSAMC of all communities except for 10-years old community were significant. The effects of season on PSAMC at different stages of all C. platyacantha-S. sinensis communities was not significant. Similarly, aspect had no notable effects on PSAMC of all communities but 10-years old community. Different succession phases had significant effects on PSAMC (0-60 cm depth). The water retention ability of soil was restored up to 73% and 85% of primary C. platyacantha-S. sinensis forests when C. platyacantha-S. sinensis communities were 10- and 40-years old. PSAMC of different succession phases of C. platyacantha-S. sinensis had obvious characteristics of fluctuation and chaos.
Pan
Kaiwen
K
Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China. Pandw@cib.ac.cn
Zhang
Yuanbin
Y
D029962:Fagaceae / Q000254:growth & development*; D011891:Rain; D012987:Soil / Q000032:analysis*; D014197:Trees / Q000254:growth & development*; D014867:Water / Q000032:analysis*
D012987:Soil; D014867:Water