| 黄土丘陵区植被恢复对深层土壤有机碳的影响 |
| |
| 引用本文： | 王征,刘国彬,许明祥.黄土丘陵区植被恢复对深层土壤有机碳的影响[J].生态学报,2010,30(14):3947-3952. |
| |
| 作者姓名： | 王征 刘国彬 许明祥 |
| |
| 作者单位： | 1. 西北农林科技林学院,陕西杨凌,712100
2. 西北农林科技林学院,陕西杨凌,712100;中国科学院水利部水土保持研究所土壤侵蚀与旱地农业国家重点实验室,陕西杨凌,712100 |
| |
| 基金项目： | 中国科学院知识创新重要方向资助项目(KZCX2-YW-443); 国家重点基础研究发展计划资助项目(2007CB407205); 中国科学院西部行动计划资助项目(KZCX2-XB2-05-03) |
| |
| 摘 要： | 以恢复9、15、24a和34a的刺槐林为研究对象,探究黄土丘陵区深层土壤有机碳(SOC)积累以及对植被恢复的响应。区域深层土壤(50-200cm)SOC含量高达1.35-2.39g·kg-1,约为浅层土壤(0-50cm)SOC含量的25%;深层土壤SOC储量高达26.28-46.50t.hm-2,占2m土层SOC储量的50%以上,显著高于浅层SOC储量;植被恢复20多年后与恢复9a相比,深层SOC含量和储量都有极显著提高。2m土层SOC含量随植被恢复20多年后较9a提高1倍左右;2m土层SOC储量增幅为43.02.thm-2(9-34a),明显高于1m土层SOC储量增幅34.65t.hm-2(9-34a)。浅层土壤中的0-30cm相邻土层间SOC含量差异显著,而深层SOC含量较稳定。深层SOC含量与刺槐盖度、基径、高度呈极显著正相关。在评价黄土丘陵区植被恢复的土壤固碳效应时应充分考虑深层土壤有机碳储量和变化。
|
| 关 键 词： | 植被恢复 土壤有机碳 深层土壤 刺槐 黄土丘陵区 |
| 收稿时间： | 2010/1/27 0:00:00 |
| 修稿时间： | 2010/4/27 0:00:00 |
Effect of revegetation on soil organic carbon concentration in deep soil layers in
the hilly Loess Plateau of China |
| |
| WANG Zheng,LIU Guobin,XU Mingxiang.Effect of revegetation on soil organic carbon concentration in deep soil layers in
the hilly Loess Plateau of China[J].Acta Ecologica Sinica,2010,30(14):3947-3952. |
| |
| Authors: | WANG Zheng LIU Guobin XU Mingxiang |
| |
| Institution: | WANG Zheng1,LIU Guobin1,2,XU Mingxiang1,1 College of Forestry,Northwest A&F University,Yangling,Shaanxi 712100,China2 State Key Laboratory of Soil Erosion and Dryland Farming on Loess Plateau,Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources,Shaanxi,712100,China |
| |
| Abstract: | Soil organic carbon (SOC) is an important component of the global carbon cycle. Uncertainties remain about the estimation of SOC storage because of a lack of information about temporal SOC accumulation in deep soil layers. Four ages of a Black locust (Robinia pseudoacacia) revegetation chronosequence including 9 (ch9),15 (ch15),24 (ch24) and 34 years (ch34) in the hilly Loess Plateau region was selected for this study. Vegetation characteristics and SOC dynamics down to a depth of 2m were investigated along... |
| |
| Keywords: | revegetation SOC deep soil layers Black Locust hilly Loess Plateau |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
| 点击此处可从《生态学报》浏览原始摘要信息 |
| 点击此处可从《生态学报》下载免费的PDF全文 |
|
