Pedogenic Carbonate and Soil Dehydrogenase Activity in Response to Soil Organic Matter in Artemisia ordosica Community

Little attention has been paid to the role of soil organic matter （OM） in the formation of pedogenic carbonate in desert soils. The relationships among soil OM, soil dehydrogenase activity （DHA）, and soil CaCO3 in a plant community dominated by Artemisia ordosica, located on the eastern boundary of Tcngger Desert in the Alxa League, Inner Mongolia, China, were studied to understand whether OM was directly involved in the formation of pedogenic carbonate. The results showed that DHA and CuCO3 positively correlated with OM content, and DHA, OM, and CaCO3 were correlated with each other in their spatial distribution, indicating that abundant OM content contributed to the formation of CaCO3. Therefore, the formation of pedogenic CaCO3 was a biotic process in the plant community dominated by A. ordosica.

具分开测量棉纤维细度和成熟度优势的棉检显微镜

棉检显微镜是一种能够快速、直接、准确地测量棉纤维细度和成熟度的新型仪器。由于目前棉纺行业一直使用马克隆气流式纤维细度测试仪,所以市场上得不到关于棉纤维细度和成熟度性质的详细信息。棉检显微镜为市场提供了一个机会,使其可以根据棉纤维的细度和成熟度对棉纤维进行重新评估,同时能够激励棉花种植者为纺纱厂提供更细、更成熟的棉纤维。