第4期 张昆等:纳帕海高原湿地土壤有机质对水分梯度变化的响应 427 Response of soil organic matters to water contents in N apahai plateau wetlands ZHANG Kun 一,LV Xian—guo ,TIAN Kun3 (1.Key Laboratory of Wetland Ecology and Environment,Northeast Institute of Geography and Agricultural Ecology,Chinese Academy of Sciences,Changchun 130012,China; 2.Graduate School of Chinese Academy of Sciences,Beijing 100049,China; 3.Department of Environmentla Science and Engineering,Southwest Forestry College,Kunming 650224,China) Abstract: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 im— proves the soil structure.w hich playing 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 wet— land soil carbon“sink”and water—holding properties. Key words:wetlands;organic matters;response;Napahai * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * ・简讯・ 2007年云南大学获准国家自然科学基金项目表(续) (云南大学科学技术处供稿)
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