期刊论文

Response differences in decomposition and nutrient release of litter from Robinia pseudoacacia plantations with different stand ages to nitrogen deposition

中文

植物资源与环境学报

1674-7895

2021

30

06

10-18

10.3969/j.issn.1674-7895.2021.06.02

31800370:国家自然科学基金 YDY2020-34:延安大学科研计划资助项目 S202010719013:国家级大学生创新创业训练计划项目 D2020096:延安大学大学生创新创业训练计划项目

本校为其他机构

以林龄10、20、33和43 a刺槐(Robinia pseudoacacia Linn.)林地的凋落物为研究对象,分别在无氮沉降和12 g·m~(-2)·a~(-1)氮沉降处理下进行150 d的室内模拟分解试验,测定不同林龄林地凋落物的分解和C、N、P释放对氮沉降的响应差异。结果表明:随林龄增加,刺槐林地凋落物的C、N和P含量总体呈增加趋势,而木质素、多酚和缩合单宁含量以及化学丰富度和化学分异性总体呈降低趋势,C/N比、C/P比和木质素/N比在林龄43 a林地凋落物中最低。表明随林龄增加,林地凋落物的基质质量总体呈优化趋势,而其化学丰富度和分异性则呈降低趋势。氮沉降显著(P

Taking litter from Robinia pseudoacacia Linn.plantations with the stand ages of 10,20,33 and 43 a as research objects,an indoor simulated decomposition experiment was conducted under treatments without nitrogen deposition or with 12 g·m~(-2)·a~(-1) nitrogen deposition for 150 d,and the response differences in decomposition and C,N and P release of litter from plantations with different stand ages to nitrogen deposition were assayed.The results show that with the increase of stand age,C,N and P contents of litter from R.pseudoacacia plantation...