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核心小流域位于吉林省长岭县永久乡境内,是波罗泡的一股支流,属于台地沟壑区。总流域面积为27.5平方公里,其中:塬面面积25.8平方公里,沟壑面积1.7平方公里。主沟长7公里,沟壑密度每平方公里629米。全流域有核心、明塔两个村,13个自然屯,602户,3465人,664个劳动力。总耕地面积1.52万亩,人均耕地面积4.39亩。水土流失面积8109亩,其中:坡蚀面积5550亩,侵蚀沟面积2559亩。严重的水土流失对农业生产的影响很大。
Located in Yongguang, Changling County, Jilin Province, the core small watershed is a tributary of the Polo Bubble and belongs to the gully area of the Taiwan Strait. The total drainage area of 27.5 square kilometers, of which: plateau area of 25.8 square kilometers, gully area of 1.7 square kilometers. The main trench is 7 km long and its gully density is 629 meters per square kilometer. The basin has a core, Mingta two villages, 13 natural villages, 602 households, 3465 people, 664 workforce. The total area of 15,200 mu of cultivated land, per capita arable land area of 4.39 mu. Soil and water loss area of 8109 mu, of which: slope area of 5550 mu, erode area of 2559 mu. Serious soil erosion has a great impact on agricultural production.