乌鲁木齐市3种典型绿地系统生态效益评价

Ecological Benefit Evaluation of Three Typical Green Space Systems in Urumqi

[目的]为合理利用乌鲁木齐植物配置,提高园林绿化生态效益提供科学依据。[方法]针对乌鲁木齐市公园绿地、附属绿地、生产绿地3种典型绿地绿化植物的比叶重、光合量、固氮释氧量、蒸腾量,对不同绿地系统进行了生态效益评价。[结果]公园绿地绿化植物的平均比叶重和日均光合速率大于附属绿地和生产绿地,附属绿地典型绿化植物的平均比叶重高于生产绿地,但生产绿地典型绿化植物的日均光合速率高于附属绿地。3种典型绿地绿化植物的日释氧量表现为公园绿地>生产绿地>附属绿地;日固碳量表现为公园绿地>生产绿地>附属绿地;平均蒸腾耗水量表现为生产绿地>附属绿地>公园绿地。[结论]乌鲁木齐3种典型绿地系统的生态效益以公园绿地最高,其次是生产绿地、附属绿地。

[Objective]To provide scientific basis for rational utilization of Urumqi plant configuration and improvement of ecological benefits of landscape greening.[Method]According to the specific leaf weight,photosynthetic rate,nitrogen fixation,oxygen release and transpiration rate of three typical green space in Urumqi,the ecological benefits of different green space systems were evaluated.[Reslut]The average specific leaf weight and daily average photosynthetic rate of green plants in the park were higher than those in the attached green space and production green space.The daily oxygen release of three typical green plants was as follows:park green space>production green space>attached green space;daily carbon fixation capacity was shown as park green space>production green space>affiliated green space;average transpiration water consumption rate was shown as production green space>affiliated green space>park green space.[Conclusion]The ecological benefits of the 3 typical green spaces in Urumqi were the highest in park green space,followed by production green space and subsidiary green space.