Department of Crop Science, Section of Soil Chemistry, University of Milano, Milan 20133, Italy.
J Environ Sci (China). 2009;21(5):641-6. doi: 10.1016/s1001-0742(08)62319-0.
Water soluble organic carbon (WSOC) is considered the most mobile and reactive soil carbon source and its characterization is an important issue for soil ecology study. A biodegradability test was set up to study WSOC extracted from 7 soils differently managed. WSOC was extracted from soil with water (soil/water ratio of 1:2, W/V) for 30 min, and then tested for biodegradability by a liquid state respirometric test. Result obtained confirmed the finding that WSOC biodegradability depended on the both land use and management practice. These results suggested the biodegradability test as suitable method to characterize WSOC, and provided useful information to soil fertility.
水溶性有机碳（WSOC）被认为是最具移动性和反应性的土壤碳源，其特性是土壤生态学研究的一个重要问题。本研究采用生物降解性试验，对 7 种不同管理方式土壤中提取的 WSOC 进行了研究。用去离子水（水土比为 1:2，V/W）提取土壤中的 WSOC，提取时间 30 min，采用液体呼吸计法进行生物降解性测试。结果表明，WSOC 的生物降解性取决于土地利用和管理措施。这些结果表明，生物降解性试验是一种合适的方法来表征 WSOC，为土壤肥力提供了有用的信息。
