山土土壤活性碳.doc

长白山的土壤活性碳和土壤碳库管理指数研究 李彬1 王晶 2 （1.北京科技大学，北京 100010; 2.中国科学院沈阳应用生态研究所，辽宁 沈阳110016） 摘 要 运用更有效的量化指标来表征和了解土壤碳库的变化是研究土壤碳库的动态平衡所必须的，也是评价土壤肥力和生态系统的可持续性的先导。本文采用土壤碳库管理指数，讨论了国家黑土肥力监测区内的不同施肥情况下土壤碳库的变化。结果显示：施肥与否、施肥种类和数量均对土壤活性碳和土壤碳库管理指数有非常显著的影响，施肥尤其高量有机肥与化肥（NPK）配施，非常有助于土壤活性碳的增加，相应地也就提高了土壤碳库管理指数（CMPI）， M2+CK、M4+CK、M0+NPK、M1+NPK、1.5（M1+NPK）、M2+NPK、M4+NPK各施肥的处理对土壤活性碳提高的贡献率分别高达15.6%、24.8%、63.6%、135.1%、144.2%、185.9%和256.5%，对土壤碳库管理指数的提高系数达0.48、0.72、1.17、3.21???4.70 、7.86和10.44。农业生产中必须切实地重视高量有机肥与化肥（NPK）的配施，以求保持土壤肥力，提高土壤质量，使土壤碳库处于良性状态，最终达到维持土壤的可持续利用之目的。 关键词 土壤碳库管理指数 土壤碳库 土壤活性碳 Active C and C pool management index in chang-bai mountain soil Li bin1 wangjing2 Beijing University of Science and Technology 2. Shenyang Institute of Applied Ecology, Chinese Academy of Sciences) Abstract It is necessary that quantitatively index was used to denoted and realized change of soil carbon pool in study of dynamic equilibrium of soil carbon pool, also is precursor of estimate soil fertility and ecosystem durative. The text discussed variation of soil carbon pool in different fertilization on China black soil adopted of C pool management index (CPMI) . Results indicated soil active C and CPMI were significantly affected by fertilization and its kind and quantity. High quantity organic and inorganic of blend fertilizer redound to increase soil active C and CPMI. Soil active C increase rate respective is 15.6%、24.8%、63.6%、135.1%、144.2%、185.9%和256.5% by M2+CK、M4+CK、M0+NPK、M1+NPK、1.5（M1+NPK）、M2+NPK、M4+NPK, CPMI increase modulus respective is 0.48、0.72、1.17、3.21、4.70、7.86和10.44. This showed it is practical and important using organic and inorganic of blend fertilizer to increased the soil quality and preserved soil fertility and ecosystem durative in the agricultural production. Key C pool management index (CPMI) fertilization soil active C soil C pool 土壤中的碳是土壤有机质研究的实质，而土壤碳库又是土壤碳研究的重点，因为土壤碳库的动态平衡直接影响着土壤肥力的保持与提高，进而影响土壤质量的优劣和作物产量的高低,土壤有机碳的变化最终会影响土壤乃至整个陆地生态系统的可持续性。为此土壤学工作者一直探寻着用更有效