黄浦江源区主要植被类型土壤水土保持功能研究

在野外调查、实测的基础上,采用因子分析、系统聚类分析的方法,根据土壤层水土保持功能的强弱,将黄浦江源区主要植被类型分为4类:落阔林、灌木林为第一类,表现出很强的水土保持功能;茶园、草地、松林为第二类,土壤水土保持功能较强;毛竹林、常绿阔叶林表现出较强的抗蚀性和抗冲性,但渗透性能并不突出,土壤贮水能力也一般,水土保持功能中等,为第三类;裸露地水土保持性能很差,单独作为第四类,其渗透性、抗蚀性、抗冲性、土壤水库容都显著小于其他各样地。

Study on Soil and Water Conservation Function of Main Vegetation Category Soil in Headwater Region of the Huangpu River

It divides the main vegetation of the headwater region of Huangpu River into 4 categories based on field survey and observation and methods of factor analysis and systematic cluster analysis and according to the degree of soil and water conservation function:deciduous trees and shrubs are category 1 which shows very strong soil and water conservation function;tea plantation,grasslands and pine trees are category 2 which has stronger function;the category 3 is Moso bamboos and broadleaved evergreen trees which have stronger permeability and erodibility,but the permeable performance is not outstanding,the capacity of soil moisture storage common and soil and water conservation function moderate and;the category 4 is uncovered land where the soil and water conservation function is very weak and its permeability,erodibility,erosive resistance and soil moisture storage capacity are all notably smaller than that of the other lands.