湘中丘陵区不同植被恢复阶段林地土壤可溶性氮组分含量和密度

何玉姣; 陈婵; 朱小叶; 陈金磊; 方晰

doi:10.13870/j.cnki.stbcxb.2021.02.034

您当前的位置：

首页 >

文章列表页 >

湘中丘陵区不同植被恢复阶段林地土壤可溶性氮组分含量和密度

更新时间：2025-03-12

- 湘中丘陵区不同植被恢复阶段林地土壤可溶性氮组分含量和密度
- Content and Density of Soil Soluble Nitrogen Components at Different Vegetation Restoration Stages in Hilly Region of Central Hunan Province, China
- 水土保持学报 2021年35卷第2期页码：258-264
- 作者机构：
  
  中南林业科技大学生命科学与技术学院,长沙,410004
- 作者简介：
  
  [ "何玉姣(1994—),女,硕士研究生,主要从事生态系统生态学研究。E-mail:736008190@qq.com" ]
- 基金信息：
  
  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）
- DOI：10.13870/j.cnki.stbcxb.2021.02.034
  中图分类号： S153.6
- 纸质出版：2021
- 稿件说明：
移动端阅览
何玉姣, 陈婵, 朱小叶, 等. 湘中丘陵区不同植被恢复阶段林地土壤可溶性氮组分含量和密度[J]. 水土保持学报, 2021,35(2):258-264.

HE Yujiao, CHEN Chan, ZHU Xiaoye, et al. Content and Density of Soil Soluble Nitrogen Components at Different Vegetation Restoration Stages in Hilly Region of Central Hunan Province, China[J]. 2021, 35(2): 258-264.
何玉姣, 陈婵, 朱小叶, 等. 湘中丘陵区不同植被恢复阶段林地土壤可溶性氮组分含量和密度[J]. 水土保持学报, 2021,35(2):258-264. DOI： 10.13870/j.cnki.stbcxb.2021.02.034.

HE Yujiao, CHEN Chan, ZHU Xiaoye, et al. Content and Density of Soil Soluble Nitrogen Components at Different Vegetation Restoration Stages in Hilly Region of Central Hunan Province, China[J]. 2021, 35(2): 258-264. DOI： 10.13870/j.cnki.stbcxb.2021.02.034.

摘要

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（NH4+—N）、硝态氮（NO3-—N）含量及其密度，分析SON、NH4+—N、NO3-—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、NH4+—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%，NH4+—N分别增加22.10%，14.74%，7.80%；而各土层NO3-—N含量随植被恢复先下降再增加，LAG各土层NO3-—N含量最高，LCQ最低；0-40 cm土壤层SON、NH4+—N密度分别为143.82~528.12，55.73~65.57 kg/hm2，与LVR相比，LAG、PLL、LCQ土壤SON密度分别增加267.20%，98.40%，86.30%，NH4+—N密度分别增加17.70%，7.90%和11.60%；0-40 cm土壤层NO3-—N密度为22.91~25.87 kg/hm2，与LVR相比，LAG增加13.16%；SON、NH4+—N密度各阶段间的增长速率呈快-慢-快的特征，而NO3-—N呈慢-慢-快的特征；土壤理化性质和微生物生物量对SON、NH4+—N的影响大于NO3-—N，表明植被恢复有利于土壤N养分积累，提高土壤可溶性氮组分的含量和密度，增加土壤N的可利用性。

Abstract

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 sequence in this region. Fixed sample plots were set up

and soil samples (0-40 cm) were collected and divided into four layers (0-10

10-20

20-30 and 30-40 cm). The contents and density of soil soluble organic nitrogen (SON)

ammonium nitrogen (NH4+—N) and nitrate nitrogen (NO3-—N) were determined

and the correlations between the contents of SON

NH4+—N and NO3-—N and soil clay percentage

total nitrogen (TN)

organic carbon (SOC) and microbial biomass were analyzed. The results showed that the contents of SON and NH4+—N in each soil layer increased with the vegetation restoration. Compared with LVR

contents of SON in 0-40 cm soil layers in LAG

PLL and LCQ increased respectively by 225.78%

121.22% and 54.73%

while contents of NH4+—N increased respectively by 22.10%

14.74%

and 7.80%. The contents of NO3-—N in each soil layer decreased first and then increased with the vegetation restoration. The NO3-—N contents in each soil layer of LAG were the highest

while LCQ was the lowest. The densities of SON and NH4+—N in the 0-40 cm soil layer were 143.82~528.12 kg/hm2 and 55.73~65.57 kg/hm2 respectively. Compared with LVR

the densities of SON in LAG

PLL and LCQ increased by 267.20%

98.40%

and 86.30%

while NH4+—N increased by 17.70%

7.90%

and 11.60%

respectively. The densities of NO3-—N in 0-40 cm soil layer was 22.91~25.87 kg/hm2. Compared with LVR

LAG increased by 13.16%. The growth rates of SON and NH4+—N densities between different stages showed the characteristics of fast-slowly-fast

while that of NO3-—N showed the characteristics of slow-slowly-fast. The effects of soil physicochemical properties and microbial biomass on SON and NH4+—N were greater than that of NO3-—N. In conclusion

the vegetation restoration was conducive to the accumulation of soil N

improved the contents and densities of soil soluble nitrogen components and increased soil available N.

关键词

Keywords

references

王晶,张旭东,解宏图,等.现代土壤有机质研究中新的量化指标概述[J].应用生态学报,2003,14(10):1809-1812.

Yang K,Zhu J J,Yan Q L,et al.Soil enzyme activities as potential indicators of soluble organic nitrogen pools in forest ecosystems of Northeast China[J].Annals of Forest Science,2012,69(7):795-803.

贾晓红,李新荣,李元寿.干旱纱区植被恢复中土壤碳氮变化规律内[J].植物生态学报,2007,31(1):66-74.

王洪杰,李宪文,史学正,等.不同土地利用方式下土壤养分的分布及其与土壤颗粒组成关系[J].水土保持学报,2003,17(2):44-46,50.

金发会,李世清,卢红玲,等.石灰性土壤微生物量碳、氮与土壤颗粒组成和氮矿化势的关系[J].应用生态学报,2007,18(12):2739-2746.

安韶山,张玄,张扬,等.黄土丘陵区植被恢复中不同粒级土壤团聚体有机碳分布特征[J].水土保持学报,2007,21(6):109-113.

赵路红,李昌珍,康迪,等.黄土丘陵区植被恢复对土壤可溶性氮组分的影响[J].生态学报,2017,37(10):3533-3542.

Murphy D V, Macdonald A J, Stockdale E A, et al. Soluble organic nitrogen in agricultural soils[J].Biology and Fertility of Soils,2000,30(5/6):374-387.

赵路红,李昌珍,康迪,等.黄土丘陵区退耕地土壤可溶性氮组分季节变化与水热关系[J].生态学报,2018,38(2):689-697.

辜翔,张仕吉,刘兆丹,等.中亚热带植被恢复对土壤有机碳含量、碳密度的影响[J].植物生态学报,2018,42(5):595-608.

王传杰,王齐齐,徐虎,等.长期施肥下农田土壤-有机质-微生物的碳氮磷化学计量学特征[J].生态学报,2018,38(11):3848-3858.

Chen C R, Xu Z H, Keay P, et al. Total soluble nitrogen in forest soils as determined by persulfate oxidation and by high temperature catalytic oxidation[J].Soil Research,2005,43:515-523.

Jones D L, Willett V B. Experimental evaluation of methods to quantify dissolved organic nitrogen (DON) and dissolved organic carbon (DOC) in soil[J].Soil Biology and Biochemistry,2006,38:991-999.

Loreau M, Naeem S, Inchausti P, et al. Biodiversity and ecosystem functioning:Current knowledge and future challenges[J].Science,2001,294(5534):804-808.

Maithani K, Arunachalam A, Tripathib R S, et al.Nitrogen mineralization as influenced by climate, soil and vegetation in a subtropical humid forest in northeast India[J].Forest Ecology and Management,1998,109(1/3):91-101.

王春阳,周建斌,董燕婕,等.黄土区六种植物凋落物与不同形态氮素对土壤微生物量碳氮含量的影响[J].生态学报,2010,30(24):7092-7100.

杜雨潭,陈金磊,李雷达,等.亚热带不同植被恢复林地凋落物层碳、氮、磷化学计量特征[J].中南林业科技大学学报,2020,40(2):108-119.

Zhang Y S, Ding H, Zheng X Z, et al. Soil N transformation mechanisms can effectively conserve N in soil under saturated conditions compared to unsaturated conditions in subtropical China[J].Biology and Fertility of Soils,2018,54:495-507.

Miller A J, Cramer M D. Root nitrogen acquisition and assimilation. In Root physiology:From gene to function[M].Springer:Dordrecht,2005:1-36.

李红俊,高海力,周卫青,等.千岛湖生态公益林主要树种凋落物分解及碳素动态变化研究[J].浙江林业科技,2019,39(6):38-44.

Gelfand I, Yakir D. Influence of nitrite accumulation in association with seasonal patterns and mineralization of soil nitrogen in a semi-arid pine forest[J].Soil Biology and Biochemistry,2008,40(2):415-424.

Kelly S R, Joseph M C, Noah F. Consistent effects of nitrogen amendments on soil microbial communities and processes across biomes[J].Global Change Biology,2012,18(6):1918-1927.

Chu H, Grogan P. Soil microbial biomass, nutrient availability and nitrogen mineralization potential among vegetation-types in a low arctic tundra landscape[J].Plant and Soil,2010,329(1/2):411-420.

浏览量

857

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

黄土丘陵沟壑区植物根系对土壤优先流的影响机理

采煤沉陷裂缝不同距离下植被类型对土壤蒸渗特征的影响

京津风沙源治理工程区土壤有机碳密度分布特征

红壤丘陵区植被恢复对土壤分离能力的影响及机制

黄土高原切沟汇水区植被恢复模式对土壤饱和导水率的影响及机制