茂兰喀斯特植被演替中土壤微生物量碳氮研究
Research on Soil Microbial Biomass Carbon and Nitrogen at the Different Stages of Vegetation Succession in the Maolan Karst Area
查看参考文献46篇
|
文摘
|
选取茂兰自然保护区4种植被类型(原生林、次生林、灌木林和草地),采集0~15 cm的表层土样,探讨了土壤微生物量碳(BC)、土壤微生物量氮(BN)的变化特征及其与土壤理化特性之间的关系。研究发现:(1)样区内生态系统在正向演替中(草地→灌木林→次生林→原生林),BC、BN含量总体表现为逐渐增大,并且冬季最高,夏季最低,不同样地之间差异显著;土壤有机碳和全氮比值(OC/TN)、BC/OC值呈上升趋势,而BC/BN值和BN/TN值呈下降趋势;(2)BC对OC的贡献率为0.8%~1.8%,BN对TN的贡献率为4.1%~7.8%;(3)BC、BN与土壤pH值、OC、TN、碱解氮(AN)、土壤粉粒(0.002~0.02 mm)和<0.25 mm的团聚体之间的相关性达到极显著(p<0.01)或显著水平(p<0.05),且BC、BN之间极显著正相关(p<0.01)。说明研究区BC、BN在冬季是植物生长可利用养分的重要储备库,而夏季是源;并且BC、BN可以作为表征本研究区土壤肥力的敏感因子。 |
|
其他语种文摘
|
Soil microbial biomass carbon (BC),nitrogen (BN)and their correlations with soil physico-chemical properties were studied in four sites of the Maolan karst area:virgin forest,secondary forest,shrubbery and grassland.The data from the surface soil samples (the soil depth was 0~15cm)showed that:(1)with positive succession (from grassland to shrubbery,then to secondary forest,and then to virgin forest),BCand BNincreased,and tended to be highest in winter and lowest in summer.Besides,there were significant differences among the four sites.Furthermore,the ratios of soil organic carbon (OC)to total nitrogen (TN)and BCto OC both showed an ascending trend while BCto BNand BNto TN both showed a descending trend; (2)the contributions of BCto OC and BNto TN were 0.8%~1.8% and 4.1%~7.8%,respectively; (3)BCand BNhad significant(p<0.05)or very significant (p<0.01)correlations with soil pH,OC,TN,available nitrogen (AN),silty particles (0.002~0.02 mm)and microaggregates (<0.25 mm),respectively.Moreover,there was a significantly (p<0.01)positive correlation between BCand BN.On the whole ,these results suggested that BCand BNacted as the reservoir of plant available nutrients during winter and as the source in summer.In addition,they could be considered as sensitive indicators of soil fertility in the experimental sites. |
|
来源
|
地球与环境
,2011,39(2):188-195 【核心库】
|
|
关键词
|
喀斯特
;
土壤微生物量碳
;
土壤微生物量氮
;
植被演替
|
|
地址
|
1.
中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002
2.
贵州大学环境与资源研究所, 贵阳, 550025
|
|
语种
|
中文 |
|
文献类型
|
研究性论文 |
|
ISSN
|
1672-9250 |
|
学科
|
农业基础科学 |
|
基金
|
贵州省项目
;
国家自然科学基金创新研究群体项目
;
中国科学院知识创新工程重要方向项目
|
|
文献收藏号
|
CSCD:4241479
|
参考文献 共
46
共3页
|
|
1.
喻理飞. 退化喀斯特森林自然恢复评价研究.
林业科学,2000,36(6):12-19
|
被引
84
次
|
|
|
|
|
2.
Zeng F. Changes in vegetation after 22 years' natural restoration in the Karst disturbed area in northwestern Guangxi,China.
Acta Ecologica Sinica,2007,27(12):5110-5119
|
被引
4
次
|
|
|
|
|
3.
Jia G. Microbial biomass and nutrients in soil at the different stages of secondary forest succession in Ziwulin,northwest China.
Forest Ecology and Management,2005,217(1):117-125
|
被引
9
次
|
|
|
|
|
4.
侯满福. 茂兰喀斯特原生林不同地球化学环境的植物物种多样性.
生态环境,2006,15(3):572-576
|
被引
21
次
|
|
|
|
|
5.
Devi N B. Seasonal dynamics in soil microbial biomass C,N and P in a mixed-oak forest ecosystem of Manipur,North-east India.
Applied Soil Ecology,2006,31(3):220-227
|
被引
124
次
|
|
|
|
|
6.
Kaschuk G. Three decades of soil microbial biomass studies in Brazilian ecosystems:Lessons learned about soil quality and indications for improving sustainability.
Soil Biology and Biochemistry,2010,42(1):1-13
|
被引
30
次
|
|
|
|
|
7.
Juki D. Groundwater balance estimation in karst by using a conceptual rainfall-runoff model.
Journal of Hydrology,2009,373(3/4):302-315
|
被引
3
次
|
|
|
|
|
8.
Kaufmann G. Modelling karst geomorphology on different time scales.
Geomorphology,2009,106(1/2):62-77
|
被引
6
次
|
|
|
|
|
9.
李恩香. 广西弄拉岩溶植被不同演替阶段的主要土壤因子及溶蚀率对比研究.
生态学报,2004,24(6):1131-1139
|
被引
55
次
|
|
|
|
|
10.
喻理飞. 退化喀斯特森林自然恢复过程中群落动态研究.
林业科学,2002,38(1):1-7
|
被引
119
次
|
|
|
|
|
11.
王新洲. 喀斯特生态系统中乔木和灌木林根际土壤微生物生物量及其多样性的比较.
土壤,2010,42(2):224-229
|
被引
16
次
|
|
|
|
|
12.
周玮. 北盘江喀斯特峡谷区不同植被类型的土壤酶活性.
林业科学,2010,46(1):136-141
|
被引
33
次
|
|
|
|
|
13.
王世杰. 茂兰喀斯特原始森林土壤有机碳的空间变异性与代表性土样采集方法.
土壤学报,2007,44(3):475-483
|
被引
59
次
|
|
|
|
|
14.
吴金水.
土壤微生物生物量测定方法及其应用,2006:54-78
|
被引
123
次
|
|
|
|
|
15.
刘光崧.
土壤理化分析与剖面描述,1996:121-122
|
被引
16
次
|
|
|
|
|
16.
刘光崧.
土壤理化分析与剖面描述,1996:126-127
|
被引
2
次
|
|
|
|
|
17.
刘方. 喀斯特森林生态系统的小生境及其土壤异质性.
土壤学报,2008,45(6):1055-1062
|
被引
77
次
|
|
|
|
|
18.
Hansen K. Litterfall and nutrient return in five tree species in a common garden experiment.
Forest Ecology and Management,2009,257(10):2133-2144
|
被引
24
次
|
|
|
|
|
19.
杨刚. 不同植被类型对土壤微生物量碳氮及土壤呼吸的影响.
土壤通报,2008,39(1):189-191
|
被引
57
次
|
|
|
|
|
20.
Arunachalam A. Influence of gap size and soil properties on microbial biomass in a subtropical humid forest of north-east India.
Plant and Soil,2000,223(1):187-195
|
被引
24
次
|
|
|
|
|
了解气象卫星更多信息，请访问