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[1]WANG Xian-shuai,HUANG Cong-de,WANG Yong-jun.Soil Organic Carbon Storage under Different Land Use Types at Mountain Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River[J].Research of Soil and Water Conservation,2010,17(04):148-152.

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Soil Organic Carbon Storage under Different Land Use Types at Mountain Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 17 Number of periods: 2010 04 Page number: 148-152 Column: Public date: 2010-08-20

Title:: Soil Organic Carbon Storage under Different Land Use Types at Mountain Forest-Drought Valley Ecotone in the Upper Reaches of Minjiang River

Author(s):: WANG Xian-shuai, HUANG Cong-de, WANG Yong-jun; College of Forestry, Sichuan Agricultural University, Ya’an, Sichuan 625014, China

Keywords:: ecotone; land use; soil organic carbon content; soil organic carbon storage; drought valley

CLC:: S153.61;F301.24

DOI:: -

Abstract:: Ecotone is a sensitive region for global climate change,and study on soil organic carbon under different land use types at ecotone could provide basic data for land management.Soil organic carbon content and storage were decreased with the soil depth increment under 6 land use types at mountain forest-drought valley ecotone in the upper reaches of Minjiang River.Soil organic storage followed the order of Quercus semicarpifolia secondary forest (104.15±4.84t/hm²) >shrubbery (100.84±2.43t/hm²) >shrub (97.35±15.21t/hm²) >economic forest (85.16±10.58t/hm²) >Robinia pseudoacacia plantation (70.78±12.43t/hm²) >farmland (56.56±7.21t/hm²).Soil organic carbon storage increased by 25.13% and 50.56%,respectively after farmland was converted into Robinia pseudoacacia plantation and economic forest.Jamming and frangibility of ecotone were the main reason for lower soil organic carbon storage under different land use types at mountain forest-drought valley ecotone in the upper reaches of Minjiang River.

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