| 陕西黄土台塬近三十年耕地动态变化的表层土壤有机碳效应 |
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| 引用本文： | 张萌萌,刘梦云,常庆瑞,刘京,刘欢,张杰,杨静涵,曹润珊.陕西黄土台塬近三十年耕地动态变化的表层土壤有机碳效应[J].生态学报,2019,39(18):6785-6793. |
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| 作者姓名： | 张萌萌 刘梦云 常庆瑞 刘京 刘欢 张杰 杨静涵 曹润珊 |
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| 作者单位： | 西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100,西北农林科技大学资源环境学院, 杨凌 712100;农业部西北植物营养与农业环境重点实验室, 杨凌 712100 |
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| 基金项目： | 陕西省自然科学基础研究计划项目（2017JZ008）；国家重点研发计划项目（2016YFC0501703）；陕西省重点研发计划（2017NY-063） |
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| 摘 要： | 区域土地利用类型转变对土壤有机碳储量的影响,是生态环境效应评价的核心问题。根据土壤样点和土地利用数据,研究了陕西黄土台塬近三十年耕地转变对表层(0—20 cm)土壤有机碳密度和储量的影响。结果表明:(1)1985—2006、2006—2015年耕地的土地利用转化率分别为2.81%和17.89%,说明退耕还林政策加快了研究区土地利用类型转换速度。(2)研究区近三十年不同年份耕地表层土壤有机碳密度变化差异较大,1985年为1.73 kg/m~2,2006年较之增加8.09%,2015年较2006年增加36.36%。(3)1985—2006年,耕地不变和发生转变的面积分别为9429.87 km~2和272.41 km~2,表层土壤增加的碳储量分别为927.93×10~6 kg和33.8×10~6 kg。2006—2015年,耕地不变和发生转变的面积分别为8119.04 km~2和1768.47 km~2,表层土壤碳储量增加值分别为3132.79×10~6 kg和1198.99×10~6 kg。⑷耕地转变为林草地等类型,有利于表层土壤有机碳储量的增加,是朝着碳汇方向进行。因此,陕西黄土台塬退耕还林可以增加生态系统碳固定。
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| 关 键 词： | 土壤有机碳储量 耕地 动态变化 黄土台塬 |
| 收稿时间： | 2018/5/25 0:00:00 |
| 修稿时间： | 2019/5/13 0:00:00 |
Effects of topsoil organic carbon on the dynamic change in cultivated land in the Tableland of the Loess Plateau in Shaanxi over the last thirty years |
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| ZHANG Mengmeng,LIU Mengyun,CHANG Qingrui,LIU Jing,LIU Huan,ZHANG Jie,YANG Jinghan and CAO Runshan.Effects of topsoil organic carbon on the dynamic change in cultivated land in the Tableland of the Loess Plateau in Shaanxi over the last thirty years[J].Acta Ecologica Sinica,2019,39(18):6785-6793. |
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| Authors: | ZHANG Mengmeng LIU Mengyun CHANG Qingrui LIU Jing LIU Huan ZHANG Jie YANG Jinghan and CAO Runshan |
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| Institution: | College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China,College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China,College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China,College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China,College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China,College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China,College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China and College of Natural Resources and Environment, Northwest Agriculture and Forestry University, Yangling 712100, China;Ministry of Agriculture, Northwest Key Laboratory of Plant Nutrition and Agricultural Environment, Yangling 712100, China |
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| Abstract: | |
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| Keywords: | soil organic carbon storage cultivated land dynamic change the tableland of the Loess Plateau |
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