[1]BI Zhen,SHI Hui,XU Wu-di,et al.Forest Soil Organic Carbon Storage and Characteristics of Spacial Distribution in Sichuan Basin[J].Research of Soil and Water Conservation,2009,16(05):83-87.
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Forest Soil Organic Carbon Storage and Characteristics of Spacial Distribution in Sichuan Basin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
16
Number of periods:
2009 05
Page number:
83-87
Column:
Public date:
2009-10-20
- Title:
- Forest Soil Organic Carbon Storage and Characteristics of Spacial Distribution in Sichuan Basin
- CLC:
- S153.61;S714.2
- DOI:
- -
- Abstract:
- Soil organic carbon (SOC) density and storage of forest land in Sichuan Basin were studied based on data of 152 soil profiles,and some factors affecting SOC storage such as climate and landform were analyzed.The average SOC density of forest soil was (35.492±21.099)kg/m2 with CV 59.45%,and the total SOC storage in forest land is 6.744×1015g in whole basin.The SOC density in the sub-alpine meadow-grassland soil was the highest with 118.477kg/m2,and the lowest value of SOC density was 3.145 kg/m2 for yellow soil under the grass-Masson pine vegetation.The SOC density had notably difference for soils under different vegetation types.The temperature,rainfall and elevation were main factors that affect SOC storage,the relationship between average annual temperature and SOC density was a significant negative correlation,and the relationship between elevation and the density of SOC was a significant positive correlation.Among the rainfall,temperature and landform factors,the temperature was a key.That region where the annual average rainfall was 400～800 mm and annual average was 0～4℃,was a high-value area of mean SOC density with 80kg/m2.Where the temperature was 14～16℃ and the precipitation was 1 400～1 600mm had low density of SOC with 20kg/m2.
- References:
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1900-01-01