期刊论文

Content and Density of Soil Soluble Nitrogen Components at Different Vegetation Restoration Stages in Hilly Region of Central Hunan Province,China

中文

水土保持学报

1009-2242

2021

35

2

258-264

10.13870/j.cnki.stbcxb.2021.02.034

国家林业公益性行业科研专项（201504411）； 国家自然科学基金项目（31670448,31971455）；

本校为第一机构

以湘中丘陵区的檵木—南烛—白栎灌草丛(LVR)、檵木—杉木—白栎灌木林(LCQ)、马尾松—柯—檵木针阔混交林(PLL)、柯—红淡比—青冈常绿阔叶林(LAG)作为1个恢复序列,设置固定样地,采集土壤样品,测定土壤可溶性有机氮(SON)、铵态氮(NH_4~+—N)、硝态氮(NO_3~-—N)含量及其密度,分析SON、NH_4~+—N、NO_3~-—N含量与土壤黏粒、全氮(TN)、有机碳(SOC)、微生物生物量的相关性。结果表明:各土层SON、NH_4~+—N含量随植被恢复而增加,与LVR相比,LAG、PLL、LCQ 0—40 cm土层SON含量分别增加225.78%,121.22%,54.73%,NH_4~+—N分别增加22.10%,14.74%,7.80%;而各土层NO_3~-—N含量随植被恢复先下降再增加,L...

We selected four adjacent plant communities with almost the same habitat conditions in Changsha County,Hunan Province,China.The four vegetation communities were composed of Loropetalum chinense—Vaccinium bracteatum—Rhododendron simsii scrub-grass-land(LVR),L.chinense—Cunninghamia lanceolata—Quercus fabri shrubbery(LCQ),Pinus massoniana—Lithocarpus glaber—L.chinense coniferous-broad leaved mixed forest (PLL),L.glaber—Cleyera japonica—Cyclobalanopsis glauca evergreen broad-leaved forest(LAG)to represent the secondary forest successional s...