| Carbon cycle has been one of hot topics in Ecology now. Grassland ecosystem has an important position in the global carbon cycle. Most of the grassland is sensitive to the global change, so the grassland ecosystem is an important zone in the land ecosystem respond to global change research. In our country, the area of grassland is vast, it has very important ecological status and function.In the global carbon storage research, the estimate to aboveground is easy, but the estimate to belowground is very poor as the method limitation. Study on plant aboveground/belowground biomass allocation, especially the belowground allocation, is very important to the global carbon storage research.(1) In this thesis, the aboveground /belowground allocation pattern of Stipa krylovii community in Inner Mongolia was discussed based on the field observation in 2004 and 2005. The results was following:The aboveground biomass of 2004 showed gradually increase trend. The biomass in June, July and August was relatively lower, the biomass in September significantly increased, was 4.8 times of August. The aboveground biomass of 2005 showed remarkably single-peak curve, the peak value was 150.48g·m-2.The belowground biomass of 2004, from June to July was increased significantly, July, August and September was decreased gradually. The belowground biomass of 2005 showed two increased and two decreased process. In short, the... |
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