オオタケ トシツグ   OTAKE Toshitsugu   大竹 敏次    所属   立命館アジア太平洋大学  国際経営学部    職種   教授
言語種別	英語
発行・発表の年月	1996/11
形態種別	大学・研究所紀要
標題	Impact of Soil Conservation Policies on Carbon Sequestration in Agricultural Soils of the Central United States
執筆形態	共著
掲載誌名	Iowa State Univ. Working Paper
掲載区分	国外
著者・共著者	Paul D. Mitchell, P.G.Lakshminarayan, Bruce A. Babcock
概要	This study evaluates how soil conservation policies affect carbon sequestration in agricultural soils in the Central United States.It combines data from the 1992 National Resources Inventory (NRI) with detailed soil and climate information from the SOILS5 database. These data are incorporated into a biophysical process model calibrated to conditions in the study region. The analysis examines how alternative conservation policies influence soil organic carbon and overall soil quality. Particular attention is given to the effects of reducing soil erosion and retiring land from agricultural production. The results indicate that reducing soil erosion is more effective in increasing soil carbon sequestration than simply removing land from production. The study therefore highlights soil conservation practices as an important tool for both maintaining agricultural productivity and mitigating environmental impacts.　Overall, it demonstrates the close relationship between agricultural conservation policy, soil quality improvement, and long-term carbon storage.