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首页> 外文期刊>Journal of Arboriculture >Changes in chemical components of leaf litter of Ginkgo biloba during mulching
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Changes in chemical components of leaf litter of Ginkgo biloba during mulching

机译：银杏覆盖地凋落物化学成分的变化

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摘要

The biological decomposition and chemical changes of leaf litter of Ginkgp biloba both at the surface and bottom Livers were studied for 1 year. The changes in components such as the yields of 80 percent ethanol and water extractives, neutral sugars, uronic acids, Klason residues, acid-soluble phenolics, ash, nitrogen, and carbon were investigated. There were great drops of the yields of 80 percent ethanol extractives and water extractives in both surface and bottom mulch layers. Klason residues and sugars were the major components of the solid residues. The Klason residues lost 2.2 percent and 30.5 percent of their initial mass at the surface and bottom layers, respectively, during mulching. The total losses of the neutral sugars were 71.6 percent at the surface layer and 89.3 percnet at the (bottom layer. These results implied that the Klason residues were the most important inner component restraining the decomposition of the leaf litter of G. biloba and all analyzed cell wall components at the bottom layer had faster decomposition rates than those at the surface layer. Nitrogen content increased during one year of mulching, while changes in carbon contents were less than 1 percent throughout experiment.
机译：研究了银杏叶表面和底部肝脏凋落物的生物分解和化学变化，为期一年。研究了组分的变化，例如80％的乙醇和水提取物，中性糖，糖醛酸，Klason残留物，酸溶性酚醛，灰分，氮和碳的收率。在表层和底层覆盖层中，80％乙醇提取物和水提取物的收率均大幅下降。克拉森残渣和糖是固体残渣的主要成分。在覆盖期间，Klason残留物在表层和底层分别损失了其初始质量的2.2％和30.5％。表层中性糖的总损失为71.6％，底部层中性糖的总损失为89.3 percnet。这些结果表明，Klason残留物是抑制银杏叶片凋落物分解的最重要内部组分，所有分析底层细胞壁的分解速率比表层细胞的分解速率快，在覆盖一年后氮含量增加，而整个实验中碳含量的变化小于1％。

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