地球信息科学学报 ›› 2021, Vol. 23 ›› Issue (3): 405-418.doi: 10.12082/dqxxkx.2021.200097

• 地理空间分析综合应用 • 上一篇    下一篇

中国地级市人为热总量的估算及驱动因素分析

蔡一乐1(), 曹诗颂1,*(), 杜明义1, 李善飞2, 陈姗姗3   

  1. 1.北京建筑大学测绘与城市空间信息学院,北京 102616
    2.中国电建集团北京勘测设计研究院有限公司,北京 100024
    3.北京大学遥感与地理信息系统研究所,北京 100871
  • 收稿日期:2020-03-02 修回日期:2020-06-12 出版日期:2021-03-25 发布日期:2021-05-25
  • 通讯作者: 曹诗颂 E-mail:onejoycc@163.com;caoshisong@bucea.edu.cn
  • 作者简介:蔡一乐(1997- ),男,江苏张家港人,硕士生,主要从事人为热排放格局、过程及机理研究。E-mail: onejoycc@163.com
  • 基金资助:
    国家自然科学基金项目(41930650)

Estimation and Analysis of Driving Factors of Total AHF in Prefecture-Level of China

CAI Yile1(), CAO Shisong1,*(), DU Mingyi1, LI Shanfei2, CHEN Shanshan3   

  1. 1 School of Geomatics and Urban Spatial Informatics, Beijing University of Civil Engineering and Architecture, Beijing 102616, China
    2 Beijing engineering corporation limited, POWERCHINA, Beijing 100024, China
    3 Institute of Remote Sensing and Geographic Information System, Peking University, Beijing 100871, China
  • Received:2020-03-02 Revised:2020-06-12 Online:2021-03-25 Published:2021-05-25
  • Contact: CAO Shisong E-mail:onejoycc@163.com;caoshisong@bucea.edu.cn
  • Supported by:
    National Natural Science Foundation of China(41930650)

摘要:

人为热一定程度上影响着城市的局地环境和微气候。以2016年中国地级市为研究对象,首先采用了能源消耗清单法结合Suomi-NPP(National Polar-orbiting Partnership)VIIRS(Visible Infrared Imaging Radiometer Suite)夜间灯光数据的方法估算了格网尺度的人为热通量;其次,分别使用最小二乘法和地理加权回归法模型在全局和局部尺度上研究不同因素对人为热总量的影响;进一步使用自然断点法划分出其中的主导因素。得出以下结论:① 各地级市的人为热总量具有显著的空间差异,京津冀、长江三角洲、珠江三角洲城市群所在的中国东南地区,人为热总量相对较高;② 能源消耗、民用汽车数量、人均生产总值是全局尺度上人为热总量的主要驱动因素;人口密度、第二产业占比、道路密度和建成区面积对人为热总量的影响呈现出较强的空间异质性;外商直接投资额则在全局尺度对人为热总量的影响较低。③ 主导因素分析表明无主导因素的地级市主要位于中国的西南部,以能源消耗、民用汽车数量、人均生产总值为单一主导因素的地级市主要聚集于中国的东南部、中部及东北部、西北部,并在其周边交叉地区形成了一些数量较少的双重主导因素地级市。本文的研究为政府相关部门对于人为热调控政策的制定提供了依据。

关键词: 人为热, 驱动因素, 夜间灯光, 最小二乘法, 地理加权回归, 自然断点法, 地级市, 中国

Abstract:

Anthropogenic heat emissions significantly affect the sustainable development of cities. So far, studies regarding refined Anthropogenic Heat Flux (AHF) parameterizing have been widely conducted. However, the dominated driving factors of AHF at the prefecture level in China have not been well quantified. In this paper, we estimated the prefecture-level AHF in China and further revealed its driving factors. First, the energy consumption inventory integrated with the nighttime light data from the Suomi-national polar-orbiting partnership visible infrared imaging radiometer suite was adopted to estimate the total AHF for cities in China. Then, various socioeconomic factors of AHF were revealed using ordinary least square and geographically weighted regression models. The dominated factors for each city were identified using a coefficient quartering method which can capture the high value of each coefficient for each city. Results show that: (1) there was an obvious spatial heterogeneity of total AHF among cities, and in particular, the total AHF along the southeast coast of China was higher than those in the other regions; (2) dominated driving factors of total AHF were Energy Consumption (EC), Private car ownership (PV), and Per Capita GDP (PCGDP). In addition, the Population Density (PD), share of Secondary Industries (SI), Road Density (RD), and Urban Expansion (UE) contributed to the spatial variation of AHF across cities. Foreign Direct Investment (FDI) exhibited limited influences on AHFs; and (3) cities can be grouped into three types according to the number of dominated factors, i.e., cities having no dominated, single dominated, and bi-dominated factors. There was a high degree of spatial aggregation of cities in each city type. Cities labeled as no dominated factor were mainly located in southwestern China. Cities labeled as single dominated factor of the EC, PV, or PCGDP concentrated in southeastern, central, northeastern and northwestern China. This study can provide a reference for the government to formulate policies on the emissions of anthropogenic heat.

Key words: anthropogenic heat flux, driving factor, nighttime light data, ordinary least square, geographically weighted regression, natural break, prefecture-level, China