Using unmanned aerial vehicle data to assess the three-dimension green quantity of urban green space: A case study in Shanghai, China
Using unmanned aerial vehicle data to assess the three-dimension green quantity of urban green space: A case study in Shanghai, China
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DOI：
10.1016/j.landurbplan.2017.04.006
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发表时间：
2017-08-01
影响因子：
9.1
通讯作者：
Shu, Ting
中科院分区：
文献类型：
--
作者：
Liang, Huilin;Li, Weizheng;Shu, Ting
城市绿色空间在缓解城市化问题中发挥着重要作用，需要对其进行度量。三维绿色量（3DGQ）是衡量植物生长所占树冠空间的定量指标，常用于评价地下绿化的程度和环境气候效益。摘要本研究的目的是测量中国上海泡台湾湿地公园的3DGQ。3DGQ指数的实施得到了无人驾驶航空器（UAV）拍摄的遥感（RS）图像的支持。利用100种树木的3DGQ计算了PWP中UGS的3DGQ。同时，还对地下水系统的环境和气候效益进行了评价。整个PWP的3DGQ为668，624.13 m（3）。湿地混交林年吸收CO2 1635.57 t、SO2 2.03 kg、粉尘735.48 t、O-2 2254.49 t。日蒸腾量为367.74t。在100 m海拔蒸腾作用范围内，PWP的降温幅度为1.8 ℃。使用无人机评估地下地质系统可以帮助规划者和政策制定者提高地下地质系统的环境和气候效益。
Urban green space (UGS), which plays an important role in reducing the problems associated with urbanization, needs to be evaluated by metrics. Three-dimension green quantity (3DGQ), a quantitative index that measures the crown space occupied by a growing plant, is often used to evaluate the extent, and the environmental and climatic benefits of UGS. The objective of this study was to measure the 3DGQ of Paotaiwan Wetland Park (PWP) in Shanghai, China. Implementation of the 3DGQ index was supported by remote sensing (RS) images taken by an unmanned aerial vehicle (UAV). The 3DGQ calculations for 100 species of trees were used to calculate the 3DGQ of the UGS in PWP. The environmental and climatic benefits of UGS in PWP were also evaluated. The 3DGQ for the whole PWP was 668,624.13 m(3). The mixed woods in the PWP annually absorbed 1,635.57 t CO2, 2.03 kg SO2, 735.48 t dust, and 2,254.49 t of O-2. There was 367.74 t of diurnal transpiration. The lowered temperature of the PWP in the transpiration scope at 100 m altitude was 1.8 degrees C. The use of a UAV to assess UGS could help planners and policy makers to improve the environmental and climatic benefits of UGS.