生物炭改良林地土壤研究进展

中国是世界上人工林面积最大的国家，同时也是林地土壤质量退化最为严峻的国家。如何减缓人工林地力衰退和维持人工林长期生产力等问题，已成为当今中国乃至世界林业科学最为关注的话题。近年来生物炭作为一种新型有效的土壤改良剂被世界各国广泛研究和利用，然而目前对生物炭的土壤改良作用研究多限于农地土壤，对林地土壤改良的综述性报道还不多见。文中从生物炭影响土壤物理学、化学及生物学特性等方面综述了生物炭在改良农林地土壤方面的研究进展，提出了生物炭研究存在的问题及今后的研究方向，以期为生物炭在农业及林地的应用提供理论参考，为改进传统的森林经营措施和实现人工林可持续经营提供借鉴。

Research Advance on Biochar in Soil Improvement

China is the country with the world''s largest area of forest plantations, while also the country fa cing most severe forest soil degradation. How to slow down the decline of the plantation forest land productivity and maintain its long-term productivity has been extensively concerned across the world. In recent years, biochar as a new and effective method to improve soil has been widely studied and utilized in many countries. But most studies have been carried out for the improvement of agricultural soil while there are few reports on the forest soil improvement with biochar. The paper reviewed the research advances on biochar in agricultural and forestry soil improvement from the perspective of soil physical, chemical and biological characteristics, and discussed the existing problems and future research direction on biochar. This study is expected to provide references for the application of biochar to agriculture and forest land as well as fo r the improvement of traditional forest management measures and the adoption of sustainable management of planted forest.