Response of soil organic matters to water contents in Napahai plateau wetlands

The function of Napahai plateau wetland has degraded badly in recent years because of natural factors and human interferences.Based on field investigation and laboratory analysis,the spatial distribution of soil organic matters was analyzed in Napahai wetland.The results show that the organic matters contents in the soil increased with the increase of water contents.In the meanwhile the increase of organic matters improves the soil structure,which playing a key role of wetland soil carbon "sink" and increasing the wetland soil water-holding properties.Therefore,protecting wetland environment can help improving the function of wetland soil carbon "sink" and water-holding properties.