一、洛南盆地的自然生态环境概述洛南盆地位于秦岭东部主脊太华山脉之南和蟒岭山脉之北,属我国腹地伊、洛河流域的南洛河上游地区。盆地东西长约70~80公里、南北宽约20~30公里,西部狭窄,东部宽阔,南洛河自西向东贯穿其间。位于盆地中部的洛南县城西北距陕西省会 I. Overview of the natural ecological environment of the Luonan Basin The Luonan Basin is located in the south of the Taihu Mountains and the northern part of the Mangle Mountains, the main ridge of the eastern Qinling Mountains. It belongs to the upper reaches of the Nanluo River in the hinterland of Iraq and the Luohe River basin. The basin is about 70-80 km long from east to west and 20-30 km wide from north to south. It is narrow in the west and broad in the east, and Nanluo River runs through it from west to east. Located in the central basin of Luonan County, northwest from Shaanxi Province