Monitoring tilting angle of the slope surface to predict loess fall landslide: an on-site evidence from Heifangtai loess fall landslide in Gansu Province, China

Landslides ◽  
2022 ◽  
Author(s):  
Honghui Wang ◽  
Pan Zhong ◽  
Dehao Xiu ◽  
Yunshun Zhong ◽  
Dalei Peng ◽  
...  
Keyword(s):  
Gansu Province ◽  
Slope Surface ◽  
Tilting Angle

A relationship between displacement and tilting angle of the slope surface in shallow landslides

Landslides ◽  
2019 ◽  
Vol 16 (6) ◽  
pp. 1243-1251 ◽  
Author(s):  
Jiren Xie ◽  
Taro Uchimura ◽  
Pan Chen ◽  
Jiapeng Liu ◽  
Canrong Xie ◽  
...  
Keyword(s):  
Shallow Landslides ◽  
Slope Surface ◽  
Tilting Angle

RATIONALE FOR THE DESIGN OF A BAR ELEVATOR WITH ADJUSTABLE TILTING ANGLE USED IN ROOT CROP AND ONION HARVESTERS

2020 ◽  
pp. 4-9
Author(s):  
ALEKSEI S. DOROKHOV ◽  
◽  
ALEKSANDR G. AKSENOV ◽  
MAKSIM A. MOSYAKOV ◽  
◽  
...  
Keyword(s):  
Root Crop ◽  
Tilting Angle

2.12 Gansu Province

1992 ◽  
Vol 25 (3) ◽  
pp. 57-58
Keyword(s):  
Gansu Province

Postulation of Powder Mildew Resistance Genes in 64 Wheat Varieties (Lines) in Gansu Province, China

2011 ◽  
Vol 36 (12) ◽  
pp. 2107-2115 ◽  
Author(s):  
Shi-Qin CAO ◽  
Hui-Sheng LUO ◽  
Cui-Ping WU ◽  
She-Lin JIN ◽  
Xiao-Ming WANG ◽  
...  
Keyword(s):  
Resistance Genes ◽  
Gansu Province ◽  
Wheat Varieties ◽  
Mildew Resistance

Analysis on a Regional Rainstorm in Gansu Province

2010 ◽  
Vol 27 (1) ◽  
pp. 128-134
Author(s):  
Xin-wei LIU ◽  
Hai-xia DUAN ◽  
Qing-yun ZHAO
Keyword(s):  
Gansu Province

scholarly journals On the formation and wind enhancement mechanisms of a Mongolian cyclone that caused a transmission line galloping trip in Gansu Province

2020 ◽  
pp. 100022
Author(s):  
Shuanglong Jin ◽  
Shuanglei Feng ◽  
Xiaolin Liu ◽  
Bo Wang ◽  
Zongpeng Song ◽  
...  
Keyword(s):  
Transmission Line ◽  
Gansu Province

scholarly journals Combining WV-2 images and tree physiological factors to detect damage stages of Populus gansuensis by Asian longhorned beetle (Anoplophora glabripennis) at the tree level

2021 ◽  
Vol 8 (1) ◽  
Author(s):  
Quan Zhou ◽  
Xudong Zhang ◽  
Linfeng Yu ◽  
Lili Ren ◽  
Youqing Luo
Keyword(s):  
Remote Sensing ◽  
Gansu Province ◽  
Tree Level ◽  
Anoplophora Glabripennis ◽  
Longhorned Beetle ◽  
Asian Longhorned Beetle ◽  
Remote Sensing Images ◽  
Physiological Factors ◽  
Abnormal Phenotype ◽  
Damage Degree

Abstract Background Anoplophora glabripennis (Motschulsky), commonly known as Asian longhorned beetle (ALB), is a wood-boring insect that can cause lethal infestation to multiple borer leaf trees. In Gansu Province, northwest China, ALB has caused a large number of deaths of a local tree species Populus gansuensis. The damaged area belongs to Gobi desert where every single tree is artificially planted and is extremely difficult to cultivate. Therefore, the monitoring of the ALB infestation at the individual tree level in the landscape is necessary. Moreover, the determination of an abnormal phenotype that can be obtained directly from remote-sensing images to predict the damage degree can greatly reduce the cost of field investigation and management. Methods Multispectral WorldView-2 (WV-2) images and 5 tree physiological factors were collected as experimental materials. One-way ANOVA of the tree’s physiological factors helped in determining the phenotype to predict damage degrees. The original bands of WV-2 and derived vegetation indices were used as reference data to construct the dataset of a prediction model. Variance inflation factor and stepwise regression analyses were used to eliminate collinearity and redundancy. Finally, three machine learning algorithms, i.e., Random Forest (RF), Support Vector Machine (SVM), Classification And Regression Tree (CART), were applied and compared to find the best classifier for predicting the damage stage of individual P. gansuensis. Results The confusion matrix of RF achieved the highest overall classification accuracy (86.2%) and the highest Kappa index value (0.804), indicating the potential of using WV-2 imaging to accurately detect damage stages of individual trees. In addition, the canopy color was found to be positively correlated with P. gansuensis’ damage stages. Conclusions A novel method was developed by combining WV-2 and tree physiological index for semi-automatic classification of three damage stages of P. gansuensis infested with ALB. The canopy color was determined as an abnormal phenotype that could be directly assessed using remote-sensing images at the tree level to predict the damage degree. These tools are highly applicable for driving quick and effective measures to reduce damage to pure poplar forests in Gansu Province, China.

scholarly journals Sustainability Evaluation on the Grain to Green Program in the Hexi Corridor of China: A Metacoupled System Perspective

2021 ◽  
Vol 13 (3) ◽  
pp. 1498
Author(s):  
Jian Zhang ◽  
Tao Tian ◽  
Jinying Cui ◽  
Gordon M. Hickey ◽  
Rui Zhou ◽  
...  
Keyword(s):  
Hexi Corridor ◽  
Gansu Province ◽  
Natural System ◽  
Ecological Benefits ◽  
System Perspective ◽  
The Social ◽  
Economic Transformations ◽  
Labor Transfer ◽  
Ancient Silk Road ◽  
First Time

Most previous studies aim to predict ecosystem sustainability from the perspective of a sole human or natural system and have frequently failed to achieve their desired outcome. Based on the coupled human and natural system (CHANS) and its interaction with other systems, we attempted to analyze the effectiveness of the Grain to Green Program and predict future trends in the Hexi Corridor, the hub of the ancient silk road of China. At different scales, we applied a metacoupling framework to investigate the flows, effects, and causes of the complex CHANS. Three typical inner river watersheds within the corridor at three different geographic scales (local, regional and national) were estimated and compared. The Telecoupling Geo App, additional models, and software tools were employed to evaluate the CHANS series of the focal system (Hexi Corridor, local), adjacent system (Gansu Province, regional), and distant system (China, national). The results showed that most flows can be screened and quantitatively analyzed across focal, adjacent and distant systems. The social and economic transformations in adjacent and distant systems could affect the possibility and whereabouts of labor transfer in the focal system. Moreover, the labor migration increased the implementation efficiency of the Grain to Green Program as a Payment for Ecosystem Services (PES) strategy, thereby improving its ecological benefits. For the first time, we established a metacoupled model to quantitatively evaluate aspects of ecosystem sustainability in China, providing insight to the theory and application of sustainability science.

Sign in / Sign up

Export Citation Format

Share Document