Carbon pools in tree biomass and the soil in improved fallows in eastern Zambia

被引：25

作者：

Kaonga, Martin L. ^{[1
]}

Bayliss-Smith, Tim P. ^{[1
]}

机构：

[1] Univ Cambridge, Dept Geog, Cambridge CB4 3EN, England

来源：

AGROFORESTRY SYSTEMS | 2009年 / 76卷 / 01期

关键词：

Carbon pools; Improved fallows; Net organic carbon intake (NOC); Soil organic carbon (SOC); Trees; ORGANIC-MATTER; AGROFORESTRY SYSTEMS; NITROGEN; MAIZE; MANAGEMENT; SEQUESTRATION; PRODUCTIVITY; DYNAMICS;

D O I：

10.1007/s10457-008-9185-7

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

This study quantified tree and soil C stocks and their response to different tree species and clay contents in improved fallows in eastern Zambia. From 2002 to 2003, soil, and destructively harvested two-year old tree, samples were analysed for C. There were significant differences (P < 0.05) in aboveground tree C stocks, and in net organic C (NOC) intake rates across coppicing tree species at Msekera and Kalunga. Aboveground C stocks ranged from 2.9 to 9.8 t ha(-1), equivalent to NOC intakes of 0.8-4.9 t ha(-1) year(-1). SOC stocks in non-coppiced fallows at Kalichero and Msekera significantly differed (P < 0.05) across treatments. SOC stocks to 200 cm depth ranged from 64.7 t C ha(-1) under non-coppicing fallows at Kalunga to 184.0 t ha(-1) in 10-year-old coppicing fallows at Msekera. Therefore, tree and soil C stocks in improved fallows can be increased by planting selected tree species on soils with high clay content.

引用

页码：37 / 51

页数：15

共 47 条

[21] KUMAR VSK, 1999, JUSS INT FOR REV, V1, P109
[22] Kwesiga F, 1994, 87 ICRAF
[23] Lal R., 1995, Sustainable management of soil resources in the tropics
[24] Biomass and net primary productivity of Bhabar Shisham forests in central Himalaya, India
Lodhiyal, N
Lodhiyal, LS
[J]. FOREST ECOLOGY AND MANAGEMENT, 2003, 176 (1-3) : 217 - 235
[25] Mineralization of nitrogen from decomposing leaves of multipurpose trees as affected by their chemical composition
Mafongoya, PL
Nair, PKR
Dzowela, BH
[J]. BIOLOGY AND FERTILITY OF SOILS, 1998, 27 (02) : 143 - 148
[26] Change in soil carbon after land clearing or afforestation in highly weathered lateritic and sandy soils of south-western Australia
Mendham, DS
O'Connell, AM
Grove, TS
[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT, 2003, 95 (01) : 143 - 156
[27] Carbon sequestration: An underexploited environmental benefit of agroforestry systems
Montagnini, F
Nair, PKR
[J]. AGROFORESTRY SYSTEMS, 2004, 61-2 (01) : 281 - 295
[28] MURWIRA H, 1993, SOIL ORGANIC MATTER, P199
[29] Soil organic carbon (SOC) management for sustainable productivity of cropping and agro-forestry systems in Eastern and Southern Africa
Nandwa, SM
[J]. NUTRIENT CYCLING IN AGROECOSYSTEMS, 2001, 61 (1-2) : 143 - 158
[30] NOLTE C, 2001, FOREST ECOL MANAG, V179, P535

← 1 2 3 4 5 →