Spatio-temporal changes and their relationship in water resources and agricultural disasters across China

Xihui Gu*, Wenkui Bai, Jianfeng LI, Dongdong Kong, Jianyu Liu, Yue Wang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

Changes in monthly streamflow and the potential influences and feedbacks of agricultural activities are investigated. Significant decreases in streamflow are observed in northern China, including the Yellow, Huaihe and Haihe river basins, while in southern China streamflow increases significantly in the Yangtze, Pearl and South river basins. This spatial pattern of changes in streamflow indicates that the imbalance in water resources between northern (dry) and southern (wet) China has increased during past decades. On the one hand, available water resources are a controlling factor determining the expansion of irrigated land and the structure of crop plantation (i.e. rice, wheat, corn or bean); on the other hand, crop planting structure and effective irrigated areas are important determinants of changes in streamflow. The increasing effective irrigation and rice planting areas in northern China may increase water withdrawal from rivers, causing subsequent decreases in streamflow, while in southeastern China, decreasing effective irrigation areas enhance the increases in streamflow.

Original languageEnglish
Pages (from-to)490-505
Number of pages16
JournalHydrological Sciences Journal
Volume64
Issue number4
DOIs
Publication statusPublished - 12 Mar 2019

Scopus Subject Areas

  • Water Science and Technology

User-Defined Keywords

  • agriculture disasters
  • China
  • crop plantation structure
  • irrigation
  • water resources

Fingerprint

Dive into the research topics of 'Spatio-temporal changes and their relationship in water resources and agricultural disasters across China'. Together they form a unique fingerprint.

Cite this