论文部分内容阅读
最近,记者从有关部门获悉承德地区一些地方水土流失严重,已愈来愈影响到人民的生产和生活,因此,紧急呼吁承德地区各级党组织、人民政府把水土保持纳入议事日程,发动群众,大力开展水土保持工作,已属刻不容缓。 承德地区是山区,西北部高,东南部低。海拔高处1800米,低处却只有100米,落差大,水流急。夏季山洪暴发,泥砂俱下,据调查坡地每亩每年平均流失表面肥土6—7立方米;冬春季节又多暴风,坝上年平均8级以上大风时日为56天,1980年5月4日至5日两天大风,最大风力阵风达11—12级,大风刮出种子,刮出草根,深处有3厘米,浅的地方有1厘米,这样按2厘米计算,每亩就有10吨表土被风刮走。另据资料表明:截至1980年围场、丰宁两
Recently, the reporter learned from relevant departments that the serious soil erosion in some areas in Chengde has more and more affected the production and livelihood of the people. Therefore, it urgently appealed to the party organizations and people’s governments at all levels in Chengde area to put soil and water conservation on the agenda, mobilize the masses, Vigorously carry out soil and water conservation work, it is imperative. Chengde area is mountainous, high in the northwest, low in the southeast. 1,800 meters above sea level, but only 100 meters low, large drop, water emergency. According to the investigation, the annual loss of surface soil and fertilizer per acre on slopes is 6-7 cubic meters; in spring and winter, there are many more storms, and when the average annual grade 8 or above of the dam was 56 days, the gale was 56 days in May 1980 4 days to 5 days two days of gale, the maximum wind gusts up to 11-12, the wind blowing out the seeds, scraping grassroots, deep 3 cm, shallow place 1 cm, so calculated according to 2 cm per acre there 10 tons of topsoil was blown away. According to the information that: As of 1980 yard, Fengning two