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大凌河流域在1993年被国家列为重点治理区后,按照“大集中、小分散”的治理理念,进行了大规模的水土保持综合治理。10多年来,共投入水土保持资金近5亿元,投入人工6万个工日,动用土石方1.6亿m3,对200条小流域进行了综合治理,完成治理面积近2 000 km2。治理后,项目区年蓄水量达16 231.79万m3,年保土量达759.7万t,林草覆被率由16.3%提高到58.9%,区域经济由传统的以粮为主的种植业向林业、果业、畜牧业、工副业等多元化发展,生态产业型农业已具规模。
After the Daling River Basin was listed as a key control area by the state in 1993, large-scale comprehensive management of soil and water conservation was conducted in accordance with the principle of “large concentration and small dispersion”. In the past 10 years, a total of 500 million yuan has been invested in soil and water conservation, 60,000 man-days have been invested in the project and 160 million m3 of earth and stone have been used. Comprehensive management has been carried out for 200 small watersheds and a governance area of nearly 2,000 km2 has been completed. After treatment, the annual water storage capacity in the project area reached 16,217,900 m3, with the annual soil storage amounting to 7.597 million tons and the forest and grass coverage rate increased from 16.3% to 58.9%. The regional economy is dominated by the traditional grain-based cropping industry Forestry, fruit industry, animal husbandry, industrial and other diversified development, eco-industrial agriculture has a scale.