洞庭湖区水土流失特征及综合防治研究

摘要

Dongting Lake area is an important water resource conservation area.It has abundant biological resources and land resources.According to the statistical data in Hunan province and Hubei province and field investigation, we analysed the area,intensity and the likely impact of soil and water loss,summarized the measures of compre-hensive management of soil and water loss in Hunan Province and Hubei Province in recent years,and proposed the goals of prevention and control of soil and water loss in Dongting Lake area.Furthermore,according to the regional characteristics and geomorphological features,we divided the Dongting Lake area into two control partitions (hilly area and plain area),and proposed corresponding management approaches for each partition and further calculated the corresponding engineering quantities in accordance with engineering measures and plant measures.Partitioning is very important for the prevention and control of soil and water loss as well as the ecological restoration and sus-tainable development of Dongting Lake.Meanwhile the soil and water conservation work in the upper and middle reaches of Dongting Lake area should be done well.%洞庭湖是重要的水源涵养区，具有丰富的生物资源和土地资源。根据湖南、湖北2省统计资料，结合现场调查，分析了洞庭湖区水土流失面积、水土流失强度、水土流失可能产生的影响，总结了湖南、湖北2省近年来所采取的水土流失综合治理措施，提出了洞庭湖区水土流失防治目标。根据区域特点和地貌特征划分了丘岗区和平原区2个防治分区，针对每个分区提出了相应的治理模式，进一步按照工程措施和植物措施计算了相应工程量。分区规划和分区治理对防治洞庭湖区水土流失非常重要，对促进洞庭湖区生态恢复和可持续发展具有重要意义，同时也强调应做好洞庭湖流域中上游的水土保持工作。