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The influence of afforestation on land surface temperature in China

  • role： First author第一作者
  • Affiliation：

    School of Environment and Resources, Shanxi University, Taiyuan 030006, China

    Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China

  • Email：wlpn123@163.com
  • Introduction：王丽平，1995年生，女，硕士研究生，研究方向为定量遥感。E-mail：wlpn123@163.com
WANG Liping12,  
  • role： Corresponding author通信作者
  • Affiliation：

    Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China

  • Email：duansibo@caas.cn
  • Introduction：段四波，1983年生，男，研究员，研究方向为定量热红外遥感。E-mail： duansibo@caas.cn
DUAN Sibo2*,  
  • Affiliation：

    School of Environment and Resources, Shanxi University, Taiyuan 030006, China

ZHANG Xiaoyu1,  
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China

CHANG Sheng3,  
  • Affiliation：

    Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China

LIU Xiangyang2,  
  • Affiliation：

    Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China

HUANG Cheng2,  
  • Affiliation：

    Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing 100101, China

QIAN Yonggang3

resumen

In recent years, as China’s afforestation plan continues, vegetation cover has continued to increase, which in turn affects China’s surface environment. Land Surface Temperature (LST) is an important parameter that characterizes the physical processes of the surface, and is the driving factor for the energy exchange between the surface and the atmosphere. It is widely used in the research of basic subjects such as climate, hydrology, ecology and meteorology, and is one of the key parameters in many basic researches. To study the impact of afforestation strategies on local and regional scales and guide the implementation of corresponding policies, this study uses the IBM (Intrinsic Biophysical Mechanism) method to investigate the impact of afforestation in China on LST, and discusses the effects of radiative and non-radiative forcing and different vegetation cover types on LST. The results show that: (1) the influence of afforestation on LST is shown as a warming effect in the cold season in high latitudes, but as a cooling effect at all latitudes in the warm season. (2) The radiative effect of afforestation on LST in high latitude areas in cold season is relatively strong, while in other seasons, the non-radiative effect of afforestation on LST at various latitudes is dominant, and the radiative effect is relatively weak. (3) When open land is converted to forest land, different types of forest land cover have different characteristics of impact on LST. When open land is converted to deciduous broad-leaved forest, the impact on LST is similar to the overall impact of afforestation on LST, showing a warming effect in high latitude areas in the cold season, and a cooling effect in low latitude areas. The effect of open land into evergreen coniferous forests and evergreen broad-leaved forests on LST is shown as a cooling effect. This study analyzes the impact of afforestation on LST in the context of continuous afforestation in China. The research has practical significance for current afforestation policies and provides theoretical guidance for future afforestation strategies.

palabra clave

land surface temperature;IBM method;afforestation;non-radiative effect

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