您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Topography modifies the effect of land-use change in soil respiration: A meta-analysis

文献类型： 外文期刊

作者： Zhang, Yanjun 1 ; Zou, Junliang 2 ; Dang, Shuina 1 ; Osborne, Bruce 3 ; Ren, Yuanyuan 1 ; Ju, Xueliang 5 ;

作者机构： 1.Baoji Univ Arts & Sci, Geog & Environm Engn Dept, Baoji 721013, Peoples R China

2.Beijing Acad Agr & Forestry Sci, Beijing Res & Dev Ctr Grass & Environm, Beijing 100097, Peoples R China

3.Univ Coll Dublin, UCD Sch Biol & Environm Sci, Dublin 4, Ireland

4.Univ Coll Dublin, UCD Earth Inst, Dublin 4, Ireland

5.State Grid Shaanxi Elect Power Res Inst, Key Lab State Grid Environm Protect, Xian 710061, Shaanxi, Peoples R China

关键词： land-use changes; meta-analysis; soil respiration; topography

期刊名称：ECOSPHERE （ 影响因子：3.593； 五年影响因子：4.057 ）

ISSN： 2150-8925

年卷期： 2021 年 12 卷 12 期

页码：

收录情况： SCI

摘要： Soil respiration is controlled by land-use changes associated with cropland vegetation restoration, and this can vary with topography, although the magnitude of this effect and the underlying mechanisms are still unclear. We synthesized 69 recently published papers from China to explore the influence of topography-related changes in land use on soil respiration where croplands were converted into orchards (abbreviated as C-O), grasslands (abbreviated as C-G), or woodlands (abbreviated as C-W). Our results showed that not only did land-use change have a significant influence on soil respiration, but this varied with topography. While C-O resulted in a decrease in soil respiration by, on average, 3.1%, both the magnitude and sign of the change varied with topography, with an 8.2% increase for flat areas and a 14.7% decrease for slopes. For the C-G conversions, soil respiration increased, on average, by 21.4%, with a 19.5% and a 24.3% increase for flat and slope topography, respectively. For C-W, soil respiration increased, on average, by 28.0%, with only a 1.6% increase for flat areas, but a 39.9% increase for slopes. Soil temperature, soil moisture, root biomass, soil organic carbon (SOC), soil microbial biomass carbon (MBC), soil carbon-to-nitrogen ratio (C:N ratio), and soil density also varied with topography, with larger changes for slopes than for flat topography. Increases in soil respiration associated with different topography were closely related to changes in soil temperature, SOC, MBC, and root biomass (P < 0.05), but were not correlated with changes in soil moisture, C:N ratio, or soil density (P > 0.05). The contribution of different drivers to the change in soil respiration under different topographical conditions showed a trend of SOC > root biomass > MBC > soil temperature. Based on these results, topography-related variations in soil respiration need to be accounted for when quantifying the impact of land-use change in C budgets.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台