摘要
为保护太湖流域山区水土资源,应因地制宜,强化水土流失防治的针对性,以最小的代价获得最佳治理效果。以太湖流域宜溧山区的江苏省溧阳市为例,在对87块模式样地影响该区水土流失因素分析的基础上,结合野外实地调查、土壤剖面调查,利用比例尺为1∶50000的地形图、土壤类型图与土地利用类型图,获取1214个样本点主因子(坡度、起伏度、土壤有机质含量、有效土层厚度、土壤胶粒百分含量、土地利用类型与土壤类型)数据,用类间平方和法对样本点进行聚类分析,将研究区划分为6个类型区,同时对各类型区的分布、水土流失成因进行了分析概述。
Taihu watershed lies at the core of Changjiang River Delta.For protecting water and soil resources of the Taihu watershed mountainous area,and improving the pertinence of water and soil control,adjusting measures to local conditions,and gaining the best controlling effect at lowest cost.This paper takes Liyang of Jiangsu province in Yili mountains of Taihu watershed as sample,according to the data of field and soil section investigation and maps of geomorphology,soil type and landuse,1 214 sample plots main influential factors(slope degree,height difference,organic matter content,effective soil thickness,soil deadlocked grain content,land use types and soil types)were clustered by group average method based on an analysis of 87 model sample fields.The study area was divided into 6 typical districts,their distributions and their characteristics of water and soil loss of each typical district was summarized and analyzed respectively.Finally,the authors pointed out that it is the key step to divide areas studied into different typical districts according to the causes,which lead to water and soil loss. In the process of actualizing the plan of water and soil preservation,water conservancy,bioengineering,agriculture engineering,social engineering and so forth synthetic measures should be used,thus the waste of manpower,material resources,and financial ability can be avoided.
出处
《南京林业大学学报（自然科学版）》
CAS
CSCD
北大核心
2002年第6期33-36,共4页
Journal of Nanjing Forestry University：Natural Sciences Edition
关键词
太湖流域宜溧山区
水土流失
防治
分区技术
Taihu watershed
Yili mountains
Water and soil loss
Dividing region technique
