Volume: 75 Issue 7
14 Article(s)

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Theoretical analysis of "natural-social-trading" ternary water cycle mode in the inland river basin of Northwest China
Mingjiang DENG, Aihua LONG, Jiang LI, Xiaoya DENG, and Pei ZHANG
The continuous and intense human activities have greatly changed the structure, path and driving force of the natural water cycle evolution, which conversely influences the water security of human being. With the process of globalization and market economy, human activities not only affect the artificial development of
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1333 (2020)
Relief degree of land surface and its geographical meanings in the Qinghai-Tibet Plateau, China
Zhiming FENG, Wenjun LI, Peng LI, and Chiwei XIAO
Relief degree of land surface (RDLS) is one of the key indicators in the fields of suitability assessment of human settlements (SAHS) as well as resources and environmental carrying capacity (RECC) evaluation at the regional scale. Currently, there is still a lack of in-depth research on the determination of the optima
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1359 (2020)
Geomorphological characteristics of debris flow gullies on the edge of the Qinghai-Tibet Plateau
Xinyue LIANG, Mengzhen XU, Liqun LYU, Yifei CUI, and Fengbao ZHANG
The edge of the Qinghai-Tibet Plateau is characterized by high topographic relief, significant tectonic motion, extreme precipitation, and densely populated active debris flow gullies. It is essential to scientifically categorize the debris flow gullies to understand their mechanisms, prevent and mitigate debris flow d
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1373 (2020)
Interaction between urbanization and eco-environment in Tibetan Plateau
Yuxue FENG, and Guangdong LI
Scientifically assessing the interaction between urbanization and eco-environment in the Tibetan Plateau is critical for optimization of urbanization speed and quality, and for the restoration and improvement of the eco-environment. Based on previous studies about the interaction between urbanization and eco-environmen
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1386 (2020)
Discovering spatio-temporal patterns of human activity on the Qinghai-Tibet Plateau based on crowdsourcing positioning data
Jun XU, Yang XU, Lei HU, and Zhenbo WANG
The activities of local people and tourists have great effects on the ecological environment on the Qinghai-Tibet Plateau. Different kinds of activities may cause different impacts on ecology and environment. To effectively protect the ecological environment, it is necessary to study the spatiotemporal patterns of diff
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1406 (2020)
Spatiotemporal patterns of in- and out-bound population flows of the Qinghai-Tibet Plateau
Nan WANG, Huimeng WANG, Yunyan DU, Jiawei YI, Zhang LIU, and Wenna TU
In the big data era, data of population migration on the Internet has exerted great influence on conducting researches on the patterns of inter-regional population inflows and outflows. This study, based on Tencent's daily migration data (2015-2018), analyzed and explored the patterns of population inflows and outf
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1418 (2020)
Analytical methods and applications of spatial interactions in the era of big data
Yu LIU, Xin YAO, Yongxi GONG, Chaogui KANG, Xun SHI, Fahui WANG, Jiao'e WANG, Yi ZHANG, Pengfei ZHAO, Di ZHU, and Xinyan ZHU
Spatial interaction is a critical basis of understanding human processes on the land surface. Together with spatial dependence, it embodies the uniqueness and relatedness of geographical space, as well as the impact on the embedded geographical distribution patterns. Spatial interaction also has distinctive space-time
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1523 (2020)
Stages and spatial patterns of urban built-up land transition in China
Shijin QU, Shougeng HU, and Quanfeng LI
Since the reform and opening-up in 1978, the morphology of urban built-up land (UBL) has been changed significantly due to the rapid socio-economic development in China. Moreover, this change shows an unbalanced variation over space. Based on the UBL area and census data from 1981 to 2015, we use the moving T-test, ker
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1539 (2020)
The assessment on hydroclimatic changes of different regions in China at multi-scale during the past millennium
Jingyun ZHENG, Xuezhen ZHANG, Yang LIU, and Zhixin HAO
Based on the latest hydroclimatic reconstructions in peer-reviewed scientific journals, we summarize the multi-scale pattern on hydroclimatic changes and assess whether or not the variability of the 20th century is unusual in the context of the past millennium for different regions of China. The main conclusions are as
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1432 (2020)
Spatio-temporal variations in the thermal requirement of the first flowering dates of Salix babylonica and Ulmus pumila in China during 1963-2018
Zexing TAO, Quansheng GE, and Huanjiong WANG
The forcing temperature in spring is the main factor that determines the flowering time of woody plants in the Northern Hemisphere. Global warming has reduced the number of chilling days in winter, which probably alters the thermal requirement of flowering. In the past 50 years, the spatio-temporal changes in the therm
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1451 (2020)
A multi-scalar drought index for global warming: The non-stationary standardized precipitation evaporation index (NSPEI) and spatio-temporal patterns of future drought in China
Qingzhi WEN, Peng SUN, Qiang ZHANG, and Rui YAO
Drought is one of the most severe natural disasters that have widespread impacts on eco-environment and agriculture. Great efforts have been made on the study of the non-stationarity of hydrometeorological processes, while few reports are available addressing non-stationarity in drought index. Therefore, in this study,
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1465 (2020)
Quantitative evaluation of human activities affecting an interconnected river system network
Qiting ZUO, and Guotao CUI
The natural river system, which is inherently interconnected, is an essential resource for human and economic society. Beyond water, and the flows of substance (e.g. sediment, contaminant), energy (e.g. streamflow velocity), and information (e.g. livelihood and activity) are exchanged in an interconnected river system.
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1483 (2020)
Simulation of the main-channel cross-section geometry of the Lower Yellow River in response to water and sediment changes
Yanjun WANG, Baosheng WU, and Deyu ZHONG
To understand the non-equilibrium morphological adjustment of a river to environmental changes, it is essential to (i) identify accurately how previous water and sediment conditions have impacted the current morphological adjustment of the river to environmental changes and (ii) establish a corresponding simulation met
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1494 (2020)
Evolution processes of the sandbanks in the Zhenjiang-Yangzhou reach of the Yangtze River and their driving forces (from 1570 to 1971)
Under the influence of the changing relationship between the Yellow River and the Huaihe River, the lower reaches of the Huaihe River had gradually drained into the Yangtze River since 1570 AD, and finally became a tributary of the Yangtze River. This transformation added new variations to the evolution of the Yangtze
  • Publication Date: Jul. 25, 2020
  • Vol. 75 Issue 7 1512 (2020)