Accession Number : ADA478899


Title :   Afforestation for Reduction of NOx Concentration in Lanzhou China


Corporate Author : NAVAL POSTGRADUATE SCHOOL MONTEREY CA NAVAL OCEAN ANALYSIS AND PREDICTION LAB


Personal Author(s) : Chu, Peter C. ; Chen, Yuchun ; Lu, Shihua


Full Text : http://www.dtic.mil/get-tr-doc/pdf?AD=ADA478899


Report Date : 2008


Pagination or Media Count : 33


Abstract : Lanzhou is one of the major industrial cities in northwest China, the capital of Gansu Province, and located at a northwest-to-southeast oriented valley basin with elevation about 1,500-1,600-m. Due to topographic and meteorological characteristics, Lanzhou is one of the most polluted cities in China Meteorological conditions (low winds, stable stratification especially inversion), pollutant sources and sinks affect the air quality Lanzhou government carried out afforestation and pollutant-source reduction (closing several heavy industrial factories) to improve the air-quality for the past two decades In this study, effect of afforestation on reducing the NOx concentration is investigated numerically using RAMS-HYPACT model.


Descriptors :   *INDUSTRIES , *TOPOGRAPHY , *POLLUTANTS , *CHINA , *METEOROLOGY , STABILITY , ELEVATION , URBAN AREAS , STRATIFICATION , AIR QUALITY , WATER POLLUTION , INDUSTRIAL PLANTS , WIND


Subject Categories : MFG & INDUSTRIAL ENG & CONTROL OF PRODUCT SYS
      AIR POLLUTION AND CONTROL


Distribution Statement : APPROVED FOR PUBLIC RELEASE