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彭阳县属国家西海固地区贫困县之一,全县水土流失面积2 333 km2,占土地总面积的92%。从1983年建县到现在,水保生态状况已发生了翻天覆地的变化,目前全县已完成水土流失综合治理面积1 712 km2,治理程度由建县初期的11.1%提高到现在的73.4%,土壤侵蚀模数由治理前的6 000 t/(km2.a)下降为2 961 t/(km2.a),有12条小流域通过了水利部、财政部“十百千”联合验收。在介绍具体的水土保持生态建设成效、做法与经验的基础上,指出了存在的问题并提出了建议。
Pengyang County is one of the poor counties in the country’s Xihaigu area. The area of soil erosion is 2 333 km2, accounting for 92% of the total land area. Since the establishment of the county in 1983 up to now, the ecological conditions of soil and water conservation have undergone tremendous changes. At present, the comprehensive management area of soil and water loss has reached 1 712 km2 in the entire county, and the degree of management has been increased from 11.1% in the early period of Jianxian County to the present 73.4% Erosion modulus decreased from 6 000 t / (km2.a) before treatment to 2 961 t / (km2.a), and 12 small watersheds passed the joint acceptance of the Ministry of Water Resources and Ministry of Finance and the “Ministry of Finance”. On the basis of introducing the concrete achievements, practices and experiences of soil and water conservation and ecological construction, the existing problems and suggestions are pointed out.