北京林业大学学报2017，Vol.39Issue(10)：13-23,11.DOI:10.13332/j.1000-1522.20170017
造林与间伐对东北温带弃耕地土壤温室气体排放的长期影响
Long-term effects of afforestation and thinning on greenhouse gas emissions from temperate abandoned-land soil in the Northeast of China
摘要
Abstract
severe thinning > mild thinning > no thinning, which decreased by 32. 4％ at no thinning site, and decreased by 24. 3％ -29. 7％ at mild and severe thinning sites than farmland site. 4 ) the correlation between CO2 , CH4 and N2O emission fluxes and the air temperature and soil temperature were not changed by afforestation and thinning, but the correlation among three kinds of greenhouse gases and soil moisture were changed. 5) The global warming potential (GWP) (13. 89-18. 64 t/(ha·yr)) showed the trend of no thinning > farmland > severe thinning > mild thinning, which increased by 9. 1％ at no thinning site, and decreased by 12. 1％ -18. 7％ at mild and severe thinning sites than farmland site, both also decreased by 19. 4％ - 25. 5％ compared with no thinning site. Therefore, afforestation increased the global warming potential on the temperate abandoned land in northeastern China, thinning greatly reduced the global warming potential, so severe intensity thinning (50％) should be more suitable for larch plantation on temperate abandoned land to control the climate warming.关键词
温带弃耕地/落叶松人工林/温室气体排放/间伐影响Key words
temperate abandoned land/larch plantation/greenhouse gas emission/thinning effects分类
农业科技引用本文复制引用
赵佳琪,牟长城,吴彬,周雪娇..造林与间伐对东北温带弃耕地土壤温室气体排放的长期影响[J].北京林业大学学报,2017,39(10):13-23,11.基金项目
国家自然科学基金重点项目(41430639). （41430639）
