@article{oai:serve.repo.nii.ac.jp:00000810,
 author = {村上, 公久},
 issue = {第2号},
 journal = {聖学院大学論叢, The Journal of Seigakuin University},
 month = {Mar},
 note = {現在世界の各地で土壌侵食によって膨大な量の養分を豊かに含んだ表土が流亡し表層を失った土壌の肥沃度が劣化し，農作物の生産量を減少させ続け，深刻な飢餓をもたらす食糧の不足を加速させている。土壌侵食そのものは自然の営みであって，地表で起こる風化生成物の移動であるが，世界各地特に熱帯・亜熱帯の森林または森林跡地で進行中の土壌侵食は，自然の土壌形成速度をはるかに上回る速さで進行し大きな問題となっている。土壌侵食は表土の流亡を加速化し土地生産力を急速に低下させるとともに，土地の環境保全機能を著しく低下させる。しかし土壌侵食は地震，火山の噴火，台風やハリケーンの襲来といった不可避的「天災」ではない。土壌侵食は人間の手によって引き起こされ加速されている避けることの可能な「人災」なのである。, Soil erosion is the major cause of devastation of land. It is a “quiet crisis” in both national and global economies. Impelled by both population pressure and shortage of food, people excluded from flat lands downstream, living on slash-and-burn cultivation (shifting cultivation), are forced to live at higher elevations on upstream slopes. This causes deforestation, which leads to soil erosion, in the tropics. Population pressure drives the conversion of the forest into agricultural land. More grassland and forest are being forcibly opened to food production and are exposed to soil erosion. This stress accelerates the deforestation trend and leads to the loss of fertile soil. Soil erosion causes not only transport of soil and land degradation that results in diminished productivity of upland farming, but also sedimentation or siltation of river systems, lakes, and reservoirs, damaging people’s life and prosperity. Nevertheless, soil erosion is not a natural disaster like earthquakes, volcanic eruptions, or any other unavoidable natural hazards, but is man-made and avoidable.},
 pages = {91--104},
 title = {静かにしのび寄る危機　土壌浸食 : 土壌浸食問題と土壌保全の方策},
 volume = {第25巻},
 year = {2013},
 yomi = {ムラカミ, キミヒサ}
}