内蒙古锡林河流域栗钙土研究

中国科学院内蒙古草原生态系统定位站,从1979年起,对锡林河流域的栗钙土,进行了多学科的长期定位研究,研究结果揭示了栗钙土的分类与环境问的关系,以及在中纬度温带地区,以大针茅(StiPa grandis)草原为主要植被条件下,物质的积累、分解、淋溶、转移及淀积的一些特征,以及这些特征与栗钙土的发生及性状之间的密切关系,本文讨论了对于物质运动、植物生物量形成有重要作用的土壤水、营养元素的动态过程,同时探讨了生物因素(土壤、动物、微生物、土壤酶)的类型、数量、季节性的和垂直的分布规律,以及它们与各生态因子的关系,进而阐述了生物因素对物质转化及土壤肥力的影响。 在上述研究的基础上,本文对于保护及合理利用土壤资源,防止土壤侵蚀沙化,提出了相应的措施。

RESEARCH ON CHESTNUT SOIL AT THE XILIN RIVER BASIN OF INNER MONGOLIA

Since 1979 We have conducted a multiple subject, long term, stationarystudies on chestnut soil at the Xilin River basin. Results have revealed thecharacters of substance accumulation, decomposition, eluviation, and illuvia-tion in the Middle latitute the Temperate zone,under the Stipa grandis grass-land vegetation condition.At the same time the relation between the charact-ers and formation process, properties of chestnut soil has brought to light,This article also deals with the dynamic of soil water and nutrient elementsthat plays an important role in substance movement and biomass formation.Types, quantity, the seasonal change and vertical distribution of biologicalfactors (soil animal, soil microorganism, soil enzyme) on chestnut soil andtheir relationship with ecological enviroments has been studied. this furtherexpounds the biological factors influence of the substance transformation andsoil fertility.According to the above studies the prospects for rational utiliz-ation and protect from soil erosion and desertation are being discussed.