Hilly-Land Soil Loss Equation (HSLE) for Evaluation of Soil Erosion Caused by the Abandonment of Agricultural Practices

JARQ : Japan Agricultural Research Quarterly
ISSN 00213551
書誌レコードID(総合目録DB) AA0068709X
本文フルテキスト
38-01-04.pdf1.26 MB

Soil erosion from fields located in the hilly lands of Shikoku was investigated. These are the areas where agricultural practices are quite limited and fields are often left idle and unutilized. Based on the results of the investigation, the calculated soil loss in terraced paddy fields and upland fields was about 3 t ha-1y-1 and 8 t ha-1y-1, respectively. Large soil loss (about 90 t ha-1y-1) was calculated to occur within several years immediately after abandoning cultivation of fields. Though soil loss did not largely increase in fields which changed to mowed grass fields (about 12 t ha-1y-1), there was a significant increase in mowed grass fields which changed to wild fields (about 40 t ha-1y-1). Soil loss in wild fields which were not cultivated for more than 6 years, decreased and became relatively stable (about 10 t ha-1y-1). To estimate the potential soil erosion of abandoned fields which are no longer cultivated, the Universal Soil Loss Equation (USLE) was revised to create the Hilly-land Soil Loss Equation (HSLE) by the addition of a term related to the erosion caused by intrusive surface and shallow-underground water runoff.

刊行年月日
作成者 YOSHIKAWA Seiko YAMAMOTO Hiroshi HANANO Yoshio ISHIHARA Akira
著者キーワード

potential soil erosion

shallow groundwater

公開者 Japan International Research Center for Agricultural Sciences
データ作成日
国立情報学研究所メタデータ主題語彙集(資源タイプ) Journal Article
38
1
開始ページ 21
終了ページ 29
DOI 10.6090/jarq.38.21
権利 Japan International Research Center for Agricultural Sciences
言語 eng