| 贡嘎山东坡土壤有机质及氮素分布特征 |
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| 引用本文： | 王琳,欧阳华,彭奎,TIAN Yuqiang,ZHANG Feng.贡嘎山东坡土壤有机质及氮素分布特征[J].地理学报(英文版),2004,14(4):481-487. |
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| 作者姓名： | 王琳 欧阳华 彭奎 TIAN Yuqiang ZHANG Feng |
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| 作者单位： | [2]InstituteofGeographicSciencesandNaturalResourcesResearch,cAS,Beijing100101,China [3]GraduateSchoolofChineseAcademyofSciences,Beijing100039,China |
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| 摘 要： | The distribution of soil organic matter (SOM) and nitrogen on Gongga Mountain was studied in this paper. The results showed that the content of SOM and nitrogen (N) of A horizon had an ascending trend with the increase of the elevation. The vegetation types distributed higher than the mixed broad-leaved and coniferous forest have the irregular trends. In the transitional zone vegetation such as mixed trees and treeline, the content of SOM and N is higher than other vegetation types. The distribution of SOM and N of A horizon is dependent on the synthetic effect of climate and vegetation types. The vertical distribution of SOM and N in soil profiles has the similar trends for all kinds of vegetation types, i.e., the content of A horizon is higher than that of the B and C horizons, which is the same to the distribution of dead animal and plant in soil. The soil C:N is between 7 and 25, which is relatively low comparing to the appropriate C:N of 25-30. The ratio of soil carbon to nitrogen (C:N) increases with the increase of the elevation, but its vertical distribution in soil horizons varies with different vegetation types. The N exists in SOM mainly in the form of organic nitrogen, and the soil C:N correlates significantly with SOM.
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| 关 键 词： | 土壤有机质 氮 贡嘎山 土壤化学 |
| 收稿时间： | 2004-05-07 |
Distribution characteristics of SOM and nitrogen on the eastern slope of Gongga Mountain |
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| WANG Lin,OUYANG Hua,PENG Kui,TIAN Yuqiang,ZHANG Feng.Distribution characteristics of SOM and nitrogen on the eastern slope of Gongga Mountain[J].Journal of Geographical Sciences,2004,14(4):481-487. |
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| Authors: | WANG Lin OUYANG Hua PENG Kui TIAN Yuqiang ZHANG Feng |
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| Institution: | 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China|;
2. Graduate School of Chinese Academy of Sciences, Beijing 100039, China |
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| Abstract: | The distribution of soil organic matter (SOM) and nitrogen on Gongga Mountain was studied in this paper. The results showed that the content of SOM and nitrogen (N) of A horizon had an ascending trend with the increase of the elevation. The vegetation types distributed higher than the mixed broad-leaved and coniferous forest have the irregular trends. In the transitional zone vegetation such as mixed trees and treeline, the content of SOM and N is higher than other vegetation types. The distribution of SOM and N of A horizon is dependent on the synthetic effect of climate and vegetation types. The vertical distribution of SOM and N in soil profiles has the similar trends for all kinds of vegetation types, i.e., the content of A horizon is higher than that of the B and C horizons, which is the same to the distribution of dead animal and plant in soil. The soil C:N is between 7 and 25, which is relatively low comparing to the appropriate C:N of 25-30. The ratio of soil carbon to nitrogen (C:N)increases with the increase of the elevation, but its vertical distribution in soil horizons varies with different vegetation types. The N exists in SOM mainly in the form of organic nitrogen, and the soil C:N correlates significantly with SOM. |
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| Keywords: | Gongga Mountain vertical gradient soil organic matter nitrogen |
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