您好，欢迎访问河北省农林科学院 机构知识库！
河北省农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Higher soil carbon and nitrogen sequestration in rice than non-rice soils following land reclamation

文献类型： 外文期刊

作者： Pan, Jinhua 1 ; Wang, Jin 3 ; Zhuang, Shunyao 1 ;

作者机构： 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China

2.Lincoln Univ, Dept Soil & Phys Sci, Lincoln 7647, New Zealand

3.Hebei Acad Agr & Forestry Sci, Shijiazhuang Inst Fruit Trees, Shijiazhuang 050061, Peoples R China

4.71 East Beijing Rd, Nanjing 210008, Peoples R China

关键词： Cultivation pattern; Soil chronosequence; Soil organic carbon stock; Total nitrogen stock; Land use

期刊名称：SOIL & TILLAGE RESEARCH （ 影响因子：6.5； 五年影响因子：7.3 ）

ISSN： 0167-1987

年卷期： 2024 年 237 卷

页码：

收录情况： SCI

摘要： Long-term rice and non-rice cultivation following coastal tidal flat reclamation can significantly influence the soil organic carbon (SOC) and total nitrogen (TN) sequestration. However, the impacts of cultivation patterns and time on SOC and TN sequestration after coastal tidal reclamation remain poorly understood. This study aims to investigate the dynamics of SOC and TN sequestration in long-term rice and non-rice cultivation following the tidal flats reclamation. Rice paddy (RP) and non-rice soils (NR) were sampled from soils aged 50 (RP50 and NR50), 100 (RP100 and NR100), 300 (RP300 and NR300), and 700 (RP700 and NR700) years to elucidate the responses of SOC and TN to long-term cultivation. Results indicated that SOC and TN increased over time under rice cultivation in the cultivated layer, reaching peaks of 34.2 g kg-1 in SOC (RP700) and 2.0 g kg-1 in TN (RP300). Moreover, SOC was 0.7-1.4 times higher in rice paddy soils than in non-rice soils, and TN was 0.6-1.1 times greater than in rice paddy soils than in non-rice soils. SOC and TN in the deeper layers remained relatively stable compared to the cultivated layer. The CDE (the difference in the SOC at a depth of D and the SOC under the steady-state condition) and NDE (similar to CDE) of rice paddy soil reached their maximum at RP300 measuring 37.6 and 2.1 g kg -1, respectively, significantly higher than those of non-rice soils. In addition, SOC density and TN density increased with rice cultivation time, peaking at RP300 (1.7 g cm-2) and RP700 (0.2 g cm-3), respectively. Overall, SOC and TN sequestration rate were 67.0 % and 62.7 % higher under rice cultivation than under non-rice cultivation, reaching steady-state equilibria after 300 years and 700 years of rice cultivation, respectively. Stabilization mechanisms associated with the depth of the cultivated layer, thickness of obstacle horizons, and specific microbial communities should be considered in future studies on the dynamics of soil carbon and nitrogen sequestration dynamics over long time scales in rice and non-rice cultivated soils.

  • 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：河北省农林科学院

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