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1流域概况1．1自然概况治理区内呈现出3种地貌。南部山区为石英岩,中部为喀斯特地貌,北部为黄土丘陵地貌,三面环山、山峦重叠、山高坡陡、沟壑纵横,地形极为破碎,植被极差。海拨高程在198．8～1108．5m之间,年平均气温14．6℃,年最高气温43℃,最低-15．4℃,历年平均无霜期234d,多年平均降雨量588mm,最多可达979．4mm,差异十分悬殊,也造成旱涝灾害的频繁发生。1．2社会经济状况流域辖11个行政村,62个村民小组、1681户、8162人、劳力2917个,人口密度201人/km~2。耕地399hm~2、人均0．049hm~2,治理前农业经营方式单一,粮食产量低而不稳,群众生活水平低
1 Basin Overview 1.1 Natural Overview There are three kinds of landforms in the governance area. The southern mountainous area is quartzite. The central part is a karst landform. The northern part is a hilly loess landform. It is surrounded by mountains on three sides and mountains overlap with steep mountains and ravines. The terrain is extremely fragmented and its vegetation is extremely poor. The altitude is between 198.8 and 1108.5m, with an annual average temperature of 14.6 ℃ and an annual maximum temperature of 43 ℃ and a minimum of -15.4 ℃. The average annual frost-free period is 234 days and the average annual rainfall is 588mm and up to 979 .4mm, the difference is very poor, but also caused the frequent occurrence of droughts and floods. 1.2 Socioeconomic Status The basin administers 11 administrative villages, 62 villagers’ groups, 1681 households, 8162 people, labor force of 2917, population density of 201 people / km ~ 2. Cultivated land 399hm ~ 2, per capita 0.049hm ~ 2, before the management of a single agricultural management, low and unstable grain output, low standard of living