Light Environment Analysis And Planning Strategies Of Green Space In Harbin High-rise Residential Area

The rapid process of urbanization allows billions of people enjoying the city life,but at the same time,it also leads to problems related to population aggregation and shortage of land resources,especially in big cities that are short of land and old city zones of small cities.The development of high-rise residential buildings is rapid because of the government's policy of intensive use of land.Compared with the general residential buildings,high-rise residential buildings have a great influence on the light conditions of the external green space,which affect the normal growth and ecological benefits of green plants a lot.Particularly,in many frigid cities,architectural sunshine spacing is reduced in order to solve the housing needs of residents,have a certain degree of building sunshine spacing reduced,resulting a worse urban residential green space environment of frigid cities.Scientific and reasonable selecting of plant species,the layout of green space in residential area,the construction of healthy and sustainable high quality green space according to the conditions of light environment is urgent.At present,the domestic and foreign research on the green space planning of residential areas are remaining at the level of qualitative research and paying more attention on the perspective of human using,the angle of landscape construction,while the quantitative research are relatively in shortage.At the same time,research on plants' resistance to the shade is relatively mature,the academies of landscape architecture all over the world took a large number of research on suitable light environment for green plants,which provide data support for this study.This paper takes Harbin as an example,uses the high-rise residential green photosynthetic radiation and sunshine duration as the starting point,explores the Harbin high-rise residential green light distribution combining the analysis of common garden plants in Harbin residential area to guide the reasonable layout of residential green space and science configuration of plants.In this paper,firstly studies the relationship between the photosynthetic radiation and urban high-rise residential green space,and summarizes the related theoretical methods and technical practice of the green space planning and the photosynthetic radiation analysis.And then investigates and observes the new high-rise residential districts built during 2008 and 2015 and its green growth conditions considering the climate in Harbin and characteristics and layout of high-rise residential areas,summarizes the problems of planting green plants,and obtains the objective data in accordance with the actual conditions and typical mode.Secondly,describes the light environment simulation process of high-rise residential areas,including the establishment of the model,the period of simulation,the meteorological parameters and the operation process of the simulation.Then,compares and analyzes the simulation results of Harbin high-rise residential district green light environment,summarizes the typical mode of light environment changes,obtains the quantitative basis for the green light environment of high-rise residential district.Finally,puts forward the coping strategies from the two aspects of high-rise residential areas: selection of plant species and landscape planning in different light conditions,which is based on the analysis of light requirement of Harbin common green plants.So,this can assist planners,landscape designers to optimize scientific plant configuration,improve the high-rise residential green plant growth and the survival rate of plants.Provides scientific basis and research methods for the planning of green space and plants selection of high rise residential areas in frigid cities.