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鹿马岔小流域位于甘肃省定西县城东南半干旱地区、祖历河二级支流东河右岸,面积13.42平方公里,其中鹿马岔村占12.34平方公里,李家堡、麻子川两村占1.08平方公里。流域长6.2公里,宽2.9公里,本文引用资料仅以鹿马岔村为主。 鹿马岔村共辖六个生产队,总土地面积1234公顷,其中农用耕地512.52公顷,占41.53％。据1983年的统计,全村共216户,1123人,人均耕地0.46公顷,土地1.1公顷,人口密度91人/平方公里。全流域水土流失面积12.94平方公里,占总面积的96.42％,平均每年流失径流为26.77万立方米,土壤冲刷量为5.67万吨,水土流失严重。1979～1983年五年平均收入50.13元,粮食总产300487公斤,
Lumacha Small Watershed is located in the semi-arid area of southeast of Dingxi County, Gansu Province. The second tributary of Zuhe River is on the right bank of Donghe River and covers an area of 13.42 km2, of which 12.34 km2 is Lumacha Village and 1.08 Lijiapu and Mazichuan Rivers Sq km. The drainage basin is 6.2 km long and 2.9 km wide. The data in this article are mainly from Lumacha Village. Luma Cha Village has a total of six production teams under the jurisdiction of the total land area of 1234 hectares, of which 512.52 hectares of agricultural land, accounting for 41.53%. According to the statistics of 1983, there are 216 households and 1123 people in the village, 0.46 hectares of arable land per capita, 1.1 hectares of land and a population density of 91 persons / km 2. The drainage area of the whole basin is 12.94 square kilometers, accounting for 96.42% of the total area. The average annual runoff loss is 267,700 cubic meters and the amount of soil erosion is 56,700 tons, resulting in serious soil erosion. The average income of five years from 1979 to 1983 was 50.13 yuan, total grain output was 300,487 kg,