您好，欢迎访问江苏省农业科学院 机构知识库！
江苏省农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Temporal and Spatial Variations in Soil Elemental Stoichiometry Coupled with Alterations in Agricultural Land Use Types in the Taihu Lake Basin

文献类型： 外文期刊

作者： Liu, Chonggang 1 ; Li, Jiangye 4 ; Sun, Wei 1 ; Gao, Yan 4 ; Yu, Zhuyun 7 ; Dong, Yue 8 ; Li, Pingxing 1 ;

作者机构： 1.Chinese Acad Sci, Nanjing Inst Geog & Limnol, Nanjing 210008, Peoples R China

2.Chinese Acad Sci, Key Lab Watershed Geog Sci, Nanjing 210008, Peoples R China

3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

4.Jiangsu Acad Agr Sci, Inst Agr Resources & Environm, Nanjing 210014, Peoples R China

5.Minist Agr & Rural Affairs, Key Lab Agr Environm Lower Yangtze River Plain, Nanjing 210014, Peoples R China

6.Minist Agr & Rural Affairs, Natl Agr Expt Stn Agr Environm Luhe, Nanjing 210014, Peoples R China

7.Hengshui Univ, Hebei Prov Key Lab Wetland Ecol & Conservat, Hengshui 053000, Peoples R China

8.Jiangsu Acad Agr Sci, Sci Res Base Adm Off, Nanjing 210014, Peoples R China

关键词： temporal-spatial distributions; C; N; P stoichiometry characteristics; land use type changes; sustainable agricultural development; C sequestration

期刊名称：AGRICULTURE-BASEL （ 影响因子：3.6； 五年影响因子：3.6 ）

ISSN：

年卷期： 2023 年 13 卷 2 期

页码：

收录情况： SCI

摘要： Soil elemental stoichiometry, expressed as the ratios of carbon (C), nitrogen (N), and phosphorus (P), regulates the biogeochemical processes of elements in terrestrial ecosystems. Generally, the soil C:N:P stoichiometry characteristics of agricultural ecosystems may be different from those of natural ecosystems, with distinct temporal and spatial variations along with the alterations of agricultural land use types (LUTs). The balance of soil C, N, and P reflected by their stoichiometry is primarily important to microbial activity and sustainable agricultural development. However, information on soil stoichiometric changes after long-term alterations in land use is still lacking. We characterized the temporal and spatial changes in soil elemental stoichiometry coupled with alterations in agricultural LUTs in the Taihu Lake basin. By using the ArcGIS method and meta-data analysis, our results showed that the C:N, C:P, and N:P ratios of agricultural soil in the Taihu Lake basin were much lower than the well-constrained values based on samples from forest, shrubland, and grassland at a global scale. Generally, these elemental ratios in soils increased from the 1980s to the 2000s, after experiencing changes from agricultural to other land use. The soil C:N:P stoichiometry may have maintained the increasing trend according to the meta-data analysis from the 341 peer-reviewed publications since 2010. Nevertheless, different regions showed inconsistent change patterns, with the Tianmu Mountain area surrounding the downstream of the Taihu Lake basin experiencing a reduction in those ratios. The changes in LUTs and their corresponding management practices were the major drivers shaping the spatial and temporal distributions of soil C:N, C:P, and N:P. Paddy soil generally achieved higher C sequestration potential due to more straw input and a more rapid transfer of straw C into soil C in the upstream of the Taihu Lake basin than other land use types. These results provide valuable information for the agricultural system of intensive cultivation on how their soil elemental stoichiometry characteristics vary temporally and spatially due to the alteration of agricultural land use types.

  • 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：江苏省农业科学院

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