Contents
2020
Volume: 75 Issue 5
15 Article(s)

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Research progress of human-earth system dynamics based on spatial resilience theory
LIU Yanxu, FU Bojie, WANG Shuai, ZHAO Wenwu, and LI Yan
The concept of human-earth system represents a dynamic structure formed by the interaction between human and earth within a specific region. Considering the complexity of the system, it is necessary to construct a more powerful indicator system to describe the interaction and reflection processes between human and eart
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 891 (2020)
Tri-clustering: Construction and practice of space-time integrated analysis tool
CHENG Changxiu, SONG Changqing, WU Xiaojing, SHEN Shi, GAO Peichao, and YE Sijing
With the improvement of geographic data acquisition capabilities, the volume of geographic data has been growing exponentially, and the data types as well as characteristics have become more diverse. The effective identification and classification of data has become the key to understand spatio-temporal patterns, evolu
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 904 (2020)
Iterative construction of UAV low-altitude air route network in an urbanized region: Theoretical system and technical roadmap
XU Chenchen, YE Huping, YUE Huanyin, TAN Xiang, and LIAO Xiaohan
The complexity in low altitude has hindered the development and utilization of low-altitude airspace resources with UAVs as the main application users. With the rapid increase of UAV numbers and the rapid expansion of commercial application of UAVs, the conflict between the increasing flight demand and the limited flig
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 917 (2020)
Vertical variation of land cover in the Central Himalayas
ZHANG Yili, WU Xue, and ZHENG Du
The Qomolangma Mountain region within the Central Himalayas is characterized by obvious altitudinal variation, habitat complexity, and land cover diversity. This region is therefore one of the most sensitive areas to climate change in the world. Besides, because this region has the most complete natural vertical spectr
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 931 (2020)
The effects of vegetation coverage changes on ecosystem service and their threshold in the Loess Plateau
ZHANG Kun, LYU Yihe, FU Bojie, YIN Lichang, and YU Dandan
The Loess Plateau is the core region of the "Green to Grain" Program, which makes it become the most successful example of ecological restoration in China. It is the common demand of both academic research and management practice to analyze the effects of vegetation restoration on ecosystem service and identi
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 949 (2020)
Contribution of climatic change and human activities to vegetation NDVI change over China during 1982-2015
JIN Kai, WANG Fei, HAN Jianqiao, SHI Shangyu, and DING Wenbin
Based on the observed daily temperature and precipitation of the land surface of 603 meteorological stations in China, the Global Inventory Modeling and Mapping Studies (GIMMS) Normalized Difference Vegetation Index (NDVI) 3rd generation dataset, the changing patterns of NDVI in China during 1982-2015 were investigated
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 961 (2020)
Multi-scale analysis of trade-off/synergy effects of forest ecosystem services in the Funiu Mountain Region
ZHANG Jingjing, ZHU Wenbo, ZHU Lianqi, and LI Yanhong
Forest ecosystem service trade-offs and synergies are important research topics for several disciplines. The multi-scale analysis of service trade-offs and synergies assists in the implementation of more effective forest resource management. Based on multi-source data including forest distribution, topography, NDVI, me
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 975 (2020)
Variability of the event-based extreme precipitation in the south and north Qinling Mountains
LI Shuangshuang, WANG Chengbo, YAN Junping, and LIU Xianfeng
Modeling extreme precipitation processes could provide a pathway for a better understanding of the questions concerning how much precipitation is extreme and how that extreme precipitation responds to warming in the climate change sensitive and ecological fragile zone of China over the coming decades. In this perspecti
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 989 (2020)
The vertical conversion characteristics and influence of the partial pressure of CO2 in the water-soil-atmosphere of critical karst zone
WANG Yanlin, ZHOU Zhongfa, XUE Bingqing, LI Po, TIAN Zhonghui, ZHANG Jie, and TANG Yuntao
The critical karst zone is the central area with the combined action of the carbon cycle in the lithosphere, atmosphere, hydrosphere, and biosphere, and the interaction among different layers forms distinctive reaction systems, where CO2 plays a vital role. Through monitoring the concentration of CO2 in the overlying s
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1008 (2020)
Analysis of driving mechanism based on a GWR model of green efficiency of water resources in China
SUN Caizhi, MA Qifei, and ZHAO Liangshi
Water shortage, which can greatly affect both natural systems and social development, has drawn extensive attention from governing authorities around the world, and become an urgent issue to be addressed. How to improve the green efficiency of water resources and alleviate the present situation of water shortage is the
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1022 (2020)
Water use analysis of Syr Darya river basin: Based on "Water-Energy-Food-Ecology" nexus and Bayesian network
SHI Haiyang, LUO Geping, ZHENG Hongwei, CHEN Chunbo, BAI Jie, and LIU Tie
Due to the influence of climate change, population growth, politics, ecological feedback and related factors, the water use system of transboundary basins are characterized by a complicated Water-Energy-Food-Ecology nexus, which constitutes a complex nonlinear system with high uncertainty. Unfortunately, the traditiona
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1036 (2020)
Formation processes and influencing factors of freshwater lens in artificial island of coral reef in South China Sea
HAN Dongmei, CAO Guoliang, and SONG Xianfang
The goal of constructing artificial islands on coral reefs in China is to build ecological habitable islands. The seawater in the artificial islands is gradually replaced by rainfall infiltration, and the freshwater lens formed is an important water source supporting the island ecosystem. The double-layer geological st
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1053 (2020)
Multi-time scale analysis of water conservation in a discontinuous forest watershed based on SWAT model
LIN Feng, CHEN Xingwei, YAO Wenyi, FANG Yihui, DENG Haijun, WU Jiefeng, and LIN Bingqing
A method has been developed based on the Soil and Water Assessment Tool (SWAT) to quantitatively evaluate the water conservation function of forests and its multi-time scale characteristics in a discontinuous forest watershed. Using this method, we have divided hydrological response units (HRU) based on the spatial dis
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1065 (2020)
The accumulation phenomenon and stochastic model in fluvial processes
JING Huan, ZHONG Deyu, ZHANG Hongwu, SHI Xufang, and WANG Yanjun
The accumulation phenomenon commonly occurs in fluvial processes. Accurately considering the accumulation effects of previous water and sediment conditions is essential for the study of riverbed evolution. To reveal the physical dynamics of the accumulation phenomenon, herein various geometry observations upstream and
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1079 (2020)
Terraces development and their implications for valley evolution of the Jinsha River from Qiaojia to Menggu
LIU Fenliang, GAO Hongshan, LI Zongmeng, PAN Baotian, and SU Huai
The valley evolution of the Jinsha River is a research hotspot in the geomorphology, but there is a big dispute on the formation time and the evolution process of the river valley. Fluvial terraces and the correlative sediments contain abundant information about the fluvial valley evolution. Through field investigation
Acta Geographica Sinica
  • Publication Date: May. 25, 2020
  • Vol.75 Issue, 5 1095 (2020)