喀斯特峰丛洼地土地利用演变及其土壤侵蚀效应

Translated title of the contribution: Land use change and its effects on soil erosion in karst cluster-peak depression region

Wen zhi Hu, Shi jie Wang*, Wei jun Luo, Xiu ming Liu, Xiao yong Bai

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The land use change induced by unreasonable human activities may result in soil erosion and other negative ecological effects, and thus, to understand their coupling relations is of great significance. Taking a representative karst cluster-peak depression region of Shirenzhai ingreat significance. Taking a representative karst cluster-peak depression region of Shirenzhai in Puding of Guizhou, Southwest China as study area, and by using stable and radioactive isotopes tracing, this paper studied the land use change and its effects on soil erosion since the 1960s, and analyzed the coupling relationships between them, based on the "pattern-process-scale" and the "source and sink landscape" theories of landscape ecology and the location-weighted landscape contrast index (LCI). In the study area, an event of sloping field forest transformed into cultivated land was recorded at about 100 cm depth in soil profile, and subsequently, a large amount of eroded soil from the sloping field was precipitated on the depression. After the event, cultivation period came. The depression was cultivated with corn, rape, and soybean in rotation. This study provided a new perspective for optimizing the local land use structure and controlling the water and soil erosion in watershed.

Translated title of the contributionLand use change and its effects on soil erosion in karst cluster-peak depression region
Original languageChinese
Pages (from-to)975-980
Number of pages6
JournalChinese Journal of Ecology
Volume31
Issue number4
Publication statusPublished - 2012
Externally publishedYes

Keywords

  • Cluster-peak depression region
  • Isotope tracing
  • Land use
  • Puding of Guizhou
  • Stable carbon isotope

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