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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。
China is the largest country in the world in planted forests and also the country with the most deteriorated soil quality in forest lands. How to alleviate the decline of plantation productivity and maintain the long-term productivity of plantations have become the topics of most forestry science in China and the world at large. In recent years, biocoke as a new and effective soil conditioner has been extensively studied and utilized in various countries in the world. However, the research on biochar soil improvement is mostly limited to agro-soil and the review on forest soil improvement is rare. In this paper, the research progress of biochar on soil improvement in agroforestry is reviewed from the aspects of soil physics, chemical and biological properties influenced by biochar, the existing problems in biochar research and the future research directions are put forward. And the application of woodland to provide theoretical reference for the improvement of traditional forest management practices and to achieve sustainable development of plantations to provide reference.