降水改变对樟子松人工林土壤微生物量碳及微生物商动态变化的影响

被引：19

作者：

魏天凤 ^{[1
]}

任艳林 ^{[2
]}

曾辉 ^{[1
]}

贺金生 ^{[2
]}

机构：

[1] 北京大学深圳研究生院环境与城市学院

[2] 北京大学城市与环境学院生态学系

来源：

北京大学学报(自然科学版) | 2009年 / 45卷 / 03期

关键词：

碳循环; 生态系统地下过程; 穿透雨; 塞罕坝; 樟子松人工林;

D O I：

10.13209/j.0479-8023.2009.079

中图分类号：

S714 [森林土壤学];

学科分类号：

090301 [土壤学];

摘要：

在北京大学地球环境与生态系统塞罕坝实验站樟子松(Pinus sylvestris var.mongolica)人工林内设置降水控制实验,研究地下生态系统过程的两个重要指标土壤微生物量碳和微生物商对穿透雨增加或减少30%的响应。在2007年5月到9月的生长季,土壤微生物量碳和微生物商平均值分别为260.7 mg/kg和1.84%,二者随土壤深度增加呈下降趋势。总体上,穿透雨增加或减少30%对土壤微生物量碳和微生物商的生长季内平均值影响不显著,但穿透雨减少30%的土壤微生物量碳及微生物商的变幅较大,变化范围分别为243.1～354.3 mg/kg和1.43%～2.16%,5月最高,7月最低,表明生长季内穿透雨减少将导致土壤微生物活动的较大波动,从而可能改变地下碳过程的季节变化规律。

引用

页码：533 / 540

页数：8

共 15 条

[1]

The long-term effects of the management of a forest soil on its carbon content; microbial biomass and activity under a semi-arid climate.[J].F. Bastida;J.L. Moreno;T. Hernández;C. García.Applied Soil Ecology.2007, 1

[2]

Soil microbial and nutrient dynamics in a wet Arctic sedge meadow in late winter and early spring [J].

Edwards, Kate A. ;

McCulloch, Jennifer ;

Kershaw, G. Peter ;

Jefferies, Robert L. .

SOIL BIOLOGY & BIOCHEMISTRY, 2006, 38 (09) :2843-2851

[3]

A temporal approach to linking aboveground and belowground ecology [J].

Bardgett, RD ;

Bowman, WD ;

Kaufmann, R ;

Schmidt, SK .

TRENDS IN ECOLOGY & EVOLUTION, 2005, 20 (11) :634-641

[4]

Precipitation pulses and carbon fluxes in semiarid and arid ecosystems [J].

Huxman, TE ;

Snyder, KA ;

Tissue, D ;

Leffler, AJ ;

Ogle, K ;

Pockman, WT ;

Sandquist, DR ;

Potts, DL ;

Schwinning, S .

OECOLOGIA, 2004, 141 (02) :254-268

[5]

Distribution of microbial biomass down soil profiles under regenerating woodland [J].

Castellazzi, MS ;

Brookes, PC ;

Jenkinson, DS .

SOIL BIOLOGY & BIOCHEMISTRY, 2004, 36 (09) :1485-1489

[6]

Effects of experimental drought on microbial processes in two temperate heathlands at contrasting water conditions [J].

Jensen, KD ;

Beier, C ;

Michelsen, A ;

Emmett, BA .

APPLIED SOIL ECOLOGY, 2003, 24 (02) :165-176

[7]

Soil plus root respiration and microbial biomass following water, nitrogen, and phosphorus application at a high arctic semi desert [J].

Illeris, L ;

Michelsen, A ;

Jonasson, S .

BIOGEOCHEMISTRY, 2003, 65 (01) :15-29

[8]

Surface and subsurface microbial biomass, community structure and metabolic activity as a function of soil depth and season [J].

Blume, E ;

Bischoff, M ;

Reichert, JM ;

Moorman, T ;

Konopka, A ;

Turco, RF .

APPLIED SOIL ECOLOGY, 2002, 20 (03) :171-181

[9]

Altering rainfall timing and quantity in a mesic grassland ecosystem: Design and performance of rainfall manipulation shelters [J].

Fay, PA ;

Carlisle, JD ;

Knapp, AK ;

Blair, JM ;

Collins, SL .

ECOSYSTEMS, 2000, 3 (03) :308-319

[10]

Spatial variability of soil microbial biomass measured by the fumigation extraction method; and K EC as affected by depth and manure application.[J].L. Tessier;E.G. Gregorich;E. Topp.Soil Biology and Biochemistry.1998, 10

← 1 2 →