Page 262 - 《高原气象》2021年第5期

5 期 刘 淳等：1990-2019年中国北方沙区太阳能资源评估 1223
国地区建设光伏电站的适宜性分析［J］. 地球信息科学学报，20 京：国家市场监督管理总局、中国国家标准化管理委员会.
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中国气象局，2019. GB/T 37526-2019 太阳能资源评估方法［S］. 北 及资源潜力评估［J］. 自然资源学报，25（10）：1738-1749.

Evaluation to the Solar Energy Resources in the Sandy Regions

of Northern China from 1990 to 2019

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LIU Chun ，REN Liqing ，LI Xuejun ，JIA Bing ，YU Tengfei ，ZHANG Chengqi ，
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XIAO Jianhua ，ZHAO Chunyan ，ZHU Meng 4
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（1. Gansu Electric Power Corporation，Lanzhou 730000，Gansu，China；
2. Remote Sensing Center of Xinjiang Meteorological Bureau，Chinese Meteorological Administration，
Urumqi 830011，Xinjiang，China；
3. Urumqi Meteorological Satellite Ground Station，Urumqi 830011，Xinjiang，China；
4. Alxa Desert Eco-Hydrological Experimental Research Station，Key Laboratory of Eco-hydrology of Inland River Basin，
Northwest Institute of Eco-Environment and Resources，Chinese Academy of Sciences，Lanzhou 730000，Gansu，China）
Abstract：The solar radiation，as a kind of clean energy，is increasingly being developed in recent years under
the background of energy crisis and global climate warming. An evaluation of the spatial patterns and storage of
solar energy is of great importance for potential solar energy resources development. The deserts in northern Chi‐
na are characterized by abundant solar energy resources and sparse vegetation cover，which are very suitable for
solar energy resources development. However，as the number of solar radiation observation stations in sandy re‐
gions of northern China is very limited，dedicated evaluation to solar energy resources in the sandy regions of
northern China is still characterized by large uncertainties. In this study，data from 46 solar radiation stations and
189 common weather stations in the sandy regions（including deserts，sandy lands，Gobi，and salinity lands）of
northern China were employed to estimate the global solar radiation based on a high-efficient machine learning
model，i. e. ，the xgboost algorithm. The solar resources were assessed by analyzing the spatiotemporal patterns
of annual，seasonal，and monthly radiation. The results showed that the average sunshine duration and global so‐
lar radiation from 1990 to 2019 are 2927. 90 h and 5888. 39 MJ·m ，respectively. The average decreasing rates
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of sunshine hours and solar radiation over the past thirty years were 22. 48 h·（10a） and 8. 66 MJ·m ，respec‐
tively，which were not significant at the 0. 05 level. The spatial patterns of sunshine duration and total solar radia‐
tion were characterized by higher values occurring in the middle parts while lower values in the east and west
parts of northern China. The radiation was maximal in the deserts of Qinghai and Hexi Corridor with values high‐
er than 6300 MJ·m ，while minimum in the sandy lands of Northeast China with values less than 5300 MJ·m .
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The solar radiation was maximal in summer，followed by spring，and the lowest in autumn and winter. General‐
ly，solar energy in deserts of the Qinghai and west Hexi Corridor were ranked as the most abundant level，while
other sandy regions were very abundant level. However，in terms of the stability of solar energy，only deserts in
the Qinghai and the southern Hexi Corridor were ranked as a relatively stable level，and other sandy regions are
fewer stable levels. Therefore，the potential of solar energy resources in the sandy regions of Qinghai and Hexi
Corridor was maximal，and should be given priority in terms of solar resources development，to promote the re‐
gional economic development and further improve the ecological environment of sandy regions.
Key words：Sandy regions in northern China；global solar radiation；spatiotemporal pattern；solar resources as‐
sessment