水土保持研究2017，Vol.24Issue(5)：27-32,6.
若尔盖高原退化湿地土壤有机碳储量
Soil Organic Carbon Storage in the Degraded Wetlands in Zoigê Plateau
摘要
Abstract
To quantify the soil organic carbon storage of the degraded marshy wetland in the Zoigê Plateau,China.Three sites (original peatland at depth of 0-200 cm,moderately degraded marshy wetland at depth of 0-100 cm,and severely degraded peatland at depth of 0-100 cm) were chosen and the soil samples were collected using the soil profile methods.This result showed that the soil bulk density (1.11±0.18 g/cm3) in the moderately degraded marshy wetland was 251.8％ higher than that of the original peatland,and soil bulk density in the severely degraded peatland (0.72±0.04 g/cm3) was 129.7％ higher than that of the original peatland,respectively.Compared to the original peatland,the soil organic carbon contents in the moderately degraded marshy wetland (46.18±6.61 g/kg) and severely degraded peatland (87.37±6.36 g/kg) have reduced by 74.2％ and 51.1％,respectively.As the soil samples were collected at depth of 0-100 cm,the soil organic carbon storage in the original peatland was 47.0％ significantly higher than that of the moderately degraded marshy wetland (384.73±95.57 t/hm2),but difference between the soil organic carbon storage in original peatland and that in severely degraded peatland (518.39±33.07 t/hm2) were no significant.However,the soil samples were a depth of 0-200 cm for the original peatland,the soil organic carbon storage in the moderately degraded marshy wetland was 64.6％ significantly lower than that of the original peatland (1 088.17±172.84 t/hm2),the soil organic carbon storage in the severely degraded peatland was 52.4％ significantly lower than that of the original peatland,respectively.This result could be main attribute to the decreases of the soil organic carbon contents in the degraded wetlands.Although the soil organic carbon storages in degraded wetland decrease,these values are still 3～5 times of that in Chinese or Global land soil (at depth of 0-100 cm).This result can provide useful information for the protection and restoration wetland in the Zoigê Plateau.关键词
退化湿地/土壤有机碳储量/若尔盖高原Key words
degraded wetlands/soil organic carbon storage/Zoigê Plateau分类
农业科技引用本文复制引用
周文昌,崔丽娟,王义飞,李伟..若尔盖高原退化湿地土壤有机碳储量[J].水土保持研究,2017,24(5):27-32,6.基金项目
中国林业科学研究院林业新技术研究所基本科研业务费专项(CAFINT2014K06) （CAFINT2014K06）
中国清洁发展机制基金赠款项目(2012076) （2012076）
