贵州岩溶峡谷区石漠化对土壤碳库的影响
研究以喀斯特典型区贵州省关岭布依族苗族自治县花江峡谷区为例,对未石漠化土地和不同程度石漠化土地中的土壤有机碳和无机碳进行了测定,并计量分析了石漠化治理对土壤碳库的影响.结果表明：（1）未石漠化土地的土壤平均碳库总量比石漠化土地的高,石漠化土地的土壤平均碳库总量主要受植被类型和土层深度的影响,其影响程度大于石漠化程度的影响;（2）土地平均碳密度则与石漠化影响程度呈显著的负相关关系,即呈非石漠化土地＞潜在石漠化土地＞石漠化土地,轻度石漠化土地＞中度石漠化土地＞重度石漠化土地＞极重度石漠化土地的变化规律;（3）通过石漠化综合治理工程,关岭县未石漠化土地和不同程度石漠化土地的面积发生了明显变化,对治理...
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| Published in | 林业科学研究 Vol. 27; no. 6; pp. 822 - 829 |
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| Main Author | |
| Format | Journal Article |
| Language | Chinese |
| Published |
中国林业科学研究院荒漠化研究所,北京100091%中国林业科学研究院荒漠化研究所,北京,100091%国家林业局中南林业调查规划设计院,湖南长沙,410014%贵州省林业科学研究院,贵州贵阳,550011%中国国际工程咨询公司,北京,100048
2014
北京林业大学水土保持学院,水土保持与荒漠化防治教育部重点实验室,北京100083 |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1001-1498 |
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| Summary: | 研究以喀斯特典型区贵州省关岭布依族苗族自治县花江峡谷区为例,对未石漠化土地和不同程度石漠化土地中的土壤有机碳和无机碳进行了测定,并计量分析了石漠化治理对土壤碳库的影响.结果表明：（1）未石漠化土地的土壤平均碳库总量比石漠化土地的高,石漠化土地的土壤平均碳库总量主要受植被类型和土层深度的影响,其影响程度大于石漠化程度的影响;（2）土地平均碳密度则与石漠化影响程度呈显著的负相关关系,即呈非石漠化土地＞潜在石漠化土地＞石漠化土地,轻度石漠化土地＞中度石漠化土地＞重度石漠化土地＞极重度石漠化土地的变化规律;（3）通过石漠化综合治理工程,关岭县未石漠化土地和不同程度石漠化土地的面积发生了明显变化,对治理工程的碳汇效益计量分析表明,碳库增加量为724.00 t·km^-2,仅增加的有机碳价值可达51.36万元·km^-2,治理效果显著. |
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| Bibliography: | The paper takes karst valley region as study area to assess the influence of rocky desertification management on soil carbon pool for the first time.We selected the Huajiang karst gorge in Guanling County of Guizhou Province as the sampled field,which is a typical rocky desertification region,soil organic and inorganic carbon content of the soil samples from non-rocky desertification land and rocky desertification land were tested respectively,and carbon densities were calculated.The results showed that：（1） the average soil carbon storage of non-rocky desertification land is higher than that of rocky desertification land,and the average carbon storage in soil profiles of rocky desertification land has less relation with the degree of rocky desertification than with vegetation type and soil depth ; （2） the average carbon density decreases as the seriousness of rocky desertification increases,none ＞ potential ＞ slight ＞ moderate ＞ serious ＞ significantly serious ; （3） soil quality was improve by the Rocky Deser |
| ISSN: | 1001-1498 |