headwater region meaning in English
河源区
上游区
Examples
- Study on runoff forecast of baihe river basin in headwater region of the yellow river
黄河源区白河流域径流预报研究 - Study on soil and water conservation function of main vegetation category soil in headwater region of the huangpu river
黄浦江源区主要植被类型土壤水土保持功能研究 - According to the requirements of sustainable development in the headwater region of xiaofu river , the groundwater pumping is planned using the optimal control model
最后直接根据淄博市孝妇河源头地区地下水资源的可持续利用需求，建立了该区的地下水最优控制模型，并求得了最优解。 - 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
摘要在野外调查、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。