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| 甘肃迭部扎尕那地区山地土壤过程的垂直分带性研究 | |
| 引用本文： | 汤萃文,苏研科,王国亚,沈永平.甘肃迭部扎尕那地区山地土壤过程的垂直分带性研究[J].冰川冻土,2013,35(1):84-92. |
| 作者姓名： | 汤萃文 苏研科 王国亚 沈永平 |
| 作者单位： | 1. 兰州交通大学环境与市政工程学院,甘肃兰州 730070;中国科学院寒区旱区环境与工程研究所冻土工程国家重点实验室,甘肃兰州 730000 2. 甘肃省科学院地质自然灾害防治研究所,甘肃兰州,730000 3. 中国科学院寒区旱区环境与工程研究所,甘肃兰州,730000 |
| 基金项目： | 冻土工程国家重点实验室开放基金项目，甘肃省教育厅研究生导师计划项目，兰州交通大学"青蓝"人才工程基金项目，兰州交通大学博士后专项基金 |
| 摘 要： | 为了研究迭部扎尕那地区山地土壤过程的垂直分带性, 对不同海拔分布的土壤类型进行垂直分带取样, 并针对不同植被类型和特殊地理因素进行横向取样, 分析土壤的化学成分及其结构. 应用GIS软件数字化研究区地形图, 提取海拔、 坡度、 坡向等地形因子, 结合土地利用资料得到土地利用类型图. 通过采样点数据与数字化地形因子图与土地利用类型图的叠加, 结合属性数据的统计分析, 讨论影响土壤过程垂直分带性各要素的垂直性规律和分布. 结果表明: 有机碳含量和全氮含量呈极好的线性正相关, 并随海拔的升高而增加. 此外, 在同一海拔范围内, 土壤有机碳含量随着土地利用类型和坡向的变化呈规律性变化. 其中, 不同土地利用类型下的土壤有机碳含量依次为有林地>高寒草甸>高覆盖度草地>农村居民点>平原耕地>山地耕地; 不同坡向上, 土壤有机碳含量依次为阴坡>半阴坡>半阳坡>阳坡. |
| 关 键 词： | 土壤 植被 地形因子 土壤过程垂直分带 扎尕那 |
| 收稿时间： | 2012-09-16 |
Vertical Zonation of Alpine Soil Processes in Zhagana Area of Diebu, Gansu Province |
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| TANG Cui-wen,SU Yan-ke,WANG Guo-ya,SHEN Yong-ping.Vertical Zonation of Alpine Soil Processes in Zhagana Area of Diebu, Gansu Province[J].Journal of Glaciology and Geocryology,2013,35(1):84-92. | |
| Authors: | TANG Cui-wen SU Yan-ke WANG Guo-ya SHEN Yong-ping |
| Abstract: | In order to study the process of soil with vertical zonation in the Zhagana in Diebu mountain area, Gansu Province, the vertical sampling for the different altitude and horizontal sampling for different vegetation and geographical were taken. On the basis of GIS, topographic and forest form map of study area were digitized, and the terrain factor such as altitude, slope aspect and gradient were extracted, and the land use map of study area was get by clipping the Chinese land use type map. Then the influence factors of the process of soil with vertical zonation were analyzed and discussed by superimposing the sampling point on the different terrain and land use map. The results show that: the content of organic carbon and total nitrogen showed excellent linear positive correlation (r=0.95), and increased with the elevating of altitude. In addition, in the same altitude range, the content of organic carbon changes regularly based on the change of land use type and slope aspects. The soil organic carbon content in different land use types were in the order of: forest land>alpine meadow>High grass coverage>rural dweller dot>plain farmland>mountain farmland. The soil organic carbon content in different aspects was in the order of: shady slope>half shady slope>half sunny slope>sunny slope. |
| Keywords: | soil vegetation terrain factor vertical zonation of soil processes Zhagana |
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