Changes in Soil Organic Carbon after Bamboo Afforestation in Cropland

LI Zheng-cai; FU Mao-yi; XU De-ying; SUN Xue-zhong; XI Jin-rong

This paper deals with the changing regularity of soil organic carbon(SOC) after afforestation in cropland,which showed:(1) in three years after afforestation,the contents of SOC were decreased in different soil profiles and the top soil profile(0～30 cm) was decreased more than that of the others;Three years later,due to the intensive management,the contents of SOC were increased quickly and up to nine years,the contents of SOC being larger than those of cropland;but twelve years later,the contents of SOC were decreased again because of the less intensive management.(2) The density of SOC showed almost the same tendency as the content of SOC;In three years,the density of SOC were decreased,later,the density of SOC was increased and in nine years,the density of SOC became larger than that of cropland;after nine yeas,the density of SOC were decreased again,but still more than those of cropland;(3) Three years after afforestation,the storage of SOC was decreased by 22%.After three years,the storage of SOC was increased gradually and in nine years,the storage of SOC became larger than that of cropland;In 12 years old stand,the storage of SOC was decreased,but larger than that of cropland.The content,density and storage of SOC all showed the tendency of decline,rising gradually,excessing and then decreasing.

1. Research Institute of Subtropical Forestry, CAF, Fuyang 311400, Zhejiang, China

2. Research Institute of Forest Ecology, Environment and Protection, CAF, Beijing 100091, China

3. Forestry Bureau of Fuyang City, Fuyang 311400, Zhejiang, China

Received Date: 2005-10-12

Abstract: This paper deals with the changing regularity of soil organic carbon(SOC) after afforestation in cropland,which showed:(1) in three years after afforestation,the contents of SOC were decreased in different soil profiles and the top soil profile(0～30 cm) was decreased more than that of the others;Three years later,due to the intensive management,the contents of SOC were increased quickly and up to nine years,the contents of SOC being larger than those of cropland;but twelve years later,the contents of SOC were decreased again because of the less intensive management.(2) The density of SOC showed almost the same tendency as the content of SOC;In three years,the density of SOC were decreased,later,the density of SOC was increased and in nine years,the density of SOC became larger than that of cropland;after nine yeas,the density of SOC were decreased again,but still more than those of cropland;(3) Three years after afforestation,the storage of SOC was decreased by 22%.After three years,the storage of SOC was increased gradually and in nine years,the storage of SOC became larger than that of cropland;In 12 years old stand,the storage of SOC was decreased,but larger than that of cropland.The content,density and storage of SOC all showed the tendency of decline,rising gradually,excessing and then decreasing.

HTML

Reference (20)

[1]	Lal R J, Kimble JM, Follett R F. Land use and soil C pool in terrestrial ecosystems[A]. In: Lal R J, Kimble J M, Follett R F, etal. Management of carbon sequestration in soil [M]. Boca Raton:CRC Press, 1998: 1～10
[2]	[R]. Canberra: The Australian Greenhouse Office, 2000: 1～119
[3]	Watson R T, Bolin B. Land Use, Land Use Change, and Forestry:A Special Report of the IPCC[M]. Cambridge: Cambridge University Press, 2000: 189～217
[4]	Dixon R K, Brown S, Houghton R A, et al. Carbon pools and flux ofglobal forest ecosystems [J]. Science, 1994, 263 (5144) : 185～190
[5]	Detwiler R P. Land use change and the global carbon cycle: the roleof trop ical soils[J]. Biogeochemistry, 1986, 2 (1) : 67～93
[6]	Houghton R A, Hackler J L, Lawrence K T. The US carbon budget:contributions from land-use change [J]. Science, 1999, 285(5427) : 574～578
[7]	Lai R. Soil organic dynamics in crop land and rangeland [J]. Environmental Pollution, 2002, 116 (3) : 353～362
[8]	Lugo A E, SanchezA J, Brown S. Land use and organic carbon content of some subtrop ical soils[J]. Plant and Soil, 1986, 96 (2) :185～196
[9]	Post W M, Known K C. Soil carbon sequestration and land usechange: p rocess and potential[J]. Global Change Biology, 2000, 6(3) : 317～327
[10]	Polglase P J, Paul K I, Khanna P K, et al. Change in soil carbon following afforestation or reforestation: review of experimental evidenceand development of a concep tual framework. National carbon accounting system technical report no. 20
[11]	Guo L B, Gifford R M. Soil carbon stocks and land us change: ameta analysis [J]. Global Change Biology, 2002, 8 (4) : 345～360
[12]	吴建国,徐德应. 土地利用变化对土壤有机碳的影响[M]. 北京:中国林业出版社, 2004
[13]	徐德应. 人类经营活动对森林土壤碳的影响[J]. 世界林业研究, 1994, 7 (5) : 26～31
[14]	李正才,傅懋毅,周本智,等. 浙西北地区几种不同土地利用/覆盖类型碳储量研究[J]. 林业科学研究, 2004, 17 (专刊) : 57～63
[15]	李凌浩. 土地利用变化对草原生态系统土壤碳贮量的影响[J].植物生态学报, 1998, 22 (4) : 300～302
[16]	李正才,傅懋毅,谢锦忠,等. 沐川县退耕还林生态恢复地碳截留效应的研究[J]. 浙江林学院学报, 2004, 21 (4) : 382～387
[17]	李跃林,彭少麟,赵平,等. 鹤山几种不同土地利用方式的土壤碳储量研究[J]. 山地学报, 2002, 20 (5) : 548～552
[18]	中国科学院南京土壤研究所. 土壤理化分析[M]. 上海:上海科学技术出版社, 1978
[19]	Wilde SA. Changes in soil p roductivity induced by p ine p lantations[J]. Soil Science, 1964, 97 (4) : 276～278
[20]	Schiffman PM, JonhsonW C. Phytomass and detritus storage during re-growth in the southeastern United States p iedmont[J]. Canadian Journal of Forestry Research, 1990, 20 (1) : 69～78

Changes in Soil Organic Carbon after Bamboo Afforestation in Cropland

Abstract

References

Proportional views

通讯作者: 陈斌, bchen63@163.com

Proportional views