...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Environmental earth sciences >The effects of ecological construction and topography on soil organic carbon and total nitrogen in the Loess Plateau of China
【24h】

The effects of ecological construction and topography on soil organic carbon and total nitrogen in the Loess Plateau of China

机译：黄土高原生态建设与地形对土壤有机碳和全氮的影响。

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

The construction of terraces and vegetation restoration in the hillslope are major soil and water conservation measures on the Chinese Loess Plateau and contributed to the distribution patterns of soil organic carbon (SOC) and soil total nitrogen (STN). Topography influences soil erosion and changes SOC and STN contents. However, little information is available regarding the effects of ecological construction and topography on SOC and STN. A study was undertaken in the Loess Plateau, to evaluate the effects of land use conversion and topographic factors on the topsoil SOC and STN content at three hillslope positions (upper, middle, and foot slopes) under four land uses types: artificial forest, grassland, terraced fields, and sloping cropland. The results showed that land use conversion from sloping cropland to artificial forest and grassland improved the SOC and STN content. Slope position was an important topographic factor governing the SOC and STN distribution at the slope scale in artificial forest, grassland, and sloping cropland, with the foot slope having the highest SOC and STN content, followed by the upper slope, while the middle slope had the lowest values. SOC and STN showed positive correlation with Caesium-137 (Cs-137) content. Land use types, slope position, and soil erosion had significant relationships with SON and STN. The results suggested that vegetation restoration of sloping cropland will contribute to soil carbon (C) and nitrogen (N) sequestration in the loess hilly region. The quantitative estimation of land use change and topography effects on SOC and STN could improve the accuracy of SOC and STN predictions in the region with a complex topography.
机译：黄土高原梯田建设和植被恢复是黄土高原地区主要的水土保持措施，有助于土壤有机碳（SOC）和土壤总氮（STN）的分布格局。地形影响土壤侵蚀并改变SOC和STN含量。但是，关于生态建设和地形对SOC和STN的影响的信息很少。在黄土高原进行了一项研究，以评估在以下四种土地利用类型（人工林，草地）下的三个山坡位置（上坡，中坡和人行坡）土地利用转化和地形因子对表土SOC和STN含量的影响。 ，梯田和倾斜的农田。结果表明，从坡耕地向人工林和草地的土地利用转化提高了SOC和STN含量。在人工林，草地和坡耕地，坡度是控制坡度尺度上SOC和STN分布的重要地形因子，其中脚坡的SOC和STN含量最高，其次是上坡，而中坡则是最低值。 SOC和STN与铯137（Cs-137）含量呈正相关。土地利用类型，边坡位置和土壤侵蚀与SON和STN有显着关系。结果表明，坡耕地植被恢复将有助于黄土丘陵区土壤碳（C）和氮（N）的固存。定量评估土地利用变化和地形对SOC和STN的影响可以提高地形复杂区域的SOC和STN预测的准确性。

著录项

  • 来源
    《Environmental earth sciences》 |2019年第1期|5.1-5.8|共8页
  • 作者

    Shi Peng; Duan Jinxiao; Zhang Yan; Li Peng; Wang Xiukang; Li Zhanbin; Xiao Lie; Xu Guoce; Lu Kexin; Cheng Shengdong; Ren Zongping; Zhang Yi; Yang Wengang;

  • 作者单位

    China Inst Water Resources & Hydropower Res, State Key Lab Simulat & Regulat Water Cycle River, Beijing 100038, Peoples R China|Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Northwest Univ, Coll Urban & Environm Sci, Xian 710127, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Yanan Univ, Coll Life Sci, Yanan 716000, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

    Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Land use conversion; Cs-137; Slope position; Soil nitrogen; Soil organic carbon;

    机译：土地利用转换;Cs-137;坡位;土壤氮;土壤有机碳;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号