Stormwater management of urban greenway in China

In order to improve the stormwater regulation functions of urban greenways on the basis of literature research and case study the relationships between urban greenway and low impact development LID and green stormwater infrastructure GSI are analyzed. Then the classification system of urban greenways is proposed based on their stormwater regulation function and the suitable technical measures for stormwater management which can be used in different kinds of greenways are selected. According to China’s urban planning system the greenway planning method combined with the urban drainage system is developed and the design methods of the greenway stormwater system and individual stormwater facilities are put forward. The relationships between the greenway stormwater system and other systems are also analyzed in terms of stormwater inlet vertical design and overflow.Finally the waterfront greenway and street greenway demonstration projects in Jiaxing City which adopts the above concept and method are introduced. The results show that the reduction rates of annual total stormwater runoff and average total runoff contaminants TSS of the stormwater system are not less than 30% and 40% respectively.

Ecological Function of Urban Green Roof and Analysis of Its Influencing Factors

Based on the analysis of the multiple ecological functions of green roofs, the main factors affecting the ecological functions of green roofs are expounded and the numerical simulation methods for quantitative calculation of ecological functions of green roofs are summarized in order to provide theoretical and method support for the construction of urban green roofs.

Sustainable water system of a green residential zone:demonstrated with a case of a campus construction project

The sustainable water system (SWS) was interpreted based on green residential zone associated codes issued by P.R.China and some other countries,and ecological principles.Its constitution,designing and engineering,and economic and environmental benefits were illustrated with a case of a campus construction project.The SWS incorporates divided nature drainage systems,grey water treatment and reuse technologies,rainwater decentralized collection and purification technologies,and water quality safeguard techniques for reclaimed water reused for landscaping.Application of the SWS is expected to gain remarkable economic and environmental benefits by reducing both the demand for municipal water supply and sewage discharge.

Studies on Material Cycling in Evergreen Broad-Leaved Forest Ecosystem in Hangzhou: Ⅰ. Precipitation Distribution

Through the long-term plot studies on the precipitation distribution in the evergreen broad-leaved forest ecosystem in Hangzhou for two years, it was indicated that the pattern of precipitation distribution included larger amounts of penetration water and stemflow and a lower amount of interception water. The results revealed that the main factors to infulence the percentages of penetration and stemflow were the air temperature and the leaf area of the forest. The quantity of seepage through the litter layer was much larger than that through the soil layers which decreased sharply with soil depth. The output of water from the ecosystem by surface runoff and deep infiltration through the soil was much lower, only being 5.20 percent of the rainfall, while the water evapotranspiration loss was as large as more than 90 percent of it. The losses by the soil evaporation and plant evapotranspiration were the largest part of output in this forest ecosystem.

丹青汇

秦海在花鸟画领域是做出了自己的成就的，而且是很有特点、很有建树、很有自己艺术主张的花鸟画家。秦海能做到这样一个水准，做了这么多的探索。出了这么多作品，可以说是在国内花鸟画当中独树一帜的，有相当成就的，我觉得这个评价也不为过。他的作品里，线在画的构成当中起了很大的作用，中锋、侧锋、顿笔，也形成了自己的特色。有几幅是非常成功的作品，《绿天》非常有张力，《生命的土地》把农作物组成一个大的画面，很有乡土气息。还有表现“黄叶下山秋满天”的景物画，千笔、燥笔充满激情，笔墨里面表现主义中很丰富，大写意的内涵表现得十分充分。还有小的画，《春朝》很生动，很清新，给人一种美好的意境；《秋叶红透》的疏朗而有节奏。《绿雨》《香如故》等，我觉得他在里面倾注了自己的思考。他画画想得很多，不只是用笔去画，而是用心去画。