论文部分内容阅读
志丹,黄土高原上一颗绿色的明珠,也是一座历史文化名城。位于陕西省延安市的西北部,总土地面积3781km2,总人口14.11万人。水土流失面积达3346km2,占总面积的88.5%。属于典型的黄土高原丘陵沟壑区。年平均气温8.1℃,多年平均降水量474.2mm,属资源型和工程型缺水并存的地区。境内山多川少,沟壑纵横,土壤贫瘠,属全国重点水土流失区。干旱少雨、自然灾害频繁,严重影响了全县农业农村经济的又好又快发展。
Zhidan, a green pearl on the Loess Plateau, is also a historical and cultural city. Located in the northwest of Yan’an City, Shaanxi Province, the total land area is 3781km2 with a total population of 141,100. Soil erosion area of 3346km2, accounting for 88.5% of the total area. Belong to the typical loess plateau hilly area. The annual average temperature of 8.1 ℃, the average annual rainfall of 474.2mm, is a combination of resource-based and engineering-type water shortage areas. Less mountainous Sichuan, ravines vertical and horizontal, poor soil, is a national key soil and water loss area. Drought and drought, frequent natural disasters, seriously affected the county agricultural and rural economy sound and rapid development.