Hui Yue

• MSc, PhD
• Xi'an University of Science and Technology

In this study, seven filter algorithms were compared. The Lee sigma method was more suitable for estimating SM than the other filtering methods under different land cover types. Firstly, we used a combination of roughness and the dual-polarized Sentinel-1A backscattering coefficients (VV and VH) to estimate SM in bare soil areas. Secondly, we emplo...

Groundwater drought monitoring relies on ground observation data, which cannot be used to reflect large-scale droughts in groundwater resources. The Gravity Recovery and Climate Experiment Satellite (GRACE) improved the situation and provided a new solution for groundwater drought research. However, the propagation relationship among global differe...

The topography is complex in the southwest karst region of China, with severe surface water scarcity but abundant groundwater resources. Studying drought propagation and vegetation demand for water is important to effectively protect the ecological environment and improve the management of water resources. We employed CRU precipitation data, GLDAS,...

Drought has a serious impact on the health of terrestrial ecosystems, socio-economy and human health. It is important to accurately monitor drought conditions. Soil moisture (SM) can directly characterize surface dryness and wetness. Precipitation (PPT), evapotranspiration (ET), land surface temperature (LST), and vegetation status indirectly relat...

Water resources and vegetation jointly affect almost every aspect of nature and society, such as geomorphology, biodiversity, local climate, settlement, and so on. However, our understanding of their dependency relation is incomplete, which is merely on the unidirectional impact of a single water resource on vegetation. Inversely, vegetation produc...

Accurately mapping lake water depth is the fundamental basis for comprehending variations in lake water levels and storage, thereby playing a crucial role in assessing the lake ecosystem and hydrological cycle. This study took Hongjiannao Lake as the research area. Multi-spectral data of 7 experimental areas near the shore of the lake were obtained...

With the policy of "carbon peaking and carbon neutrality" put forward in China, the carbon emission in mining area has become the focus of attention. The study was based on soil samples taken from the mine areas, combined with 6 mathematical transformation methods ( R, , , 1st, MSC, SNV) and spectral feature screening methods (CC-SPA), this study e...

Ecosystem comprehensive assessment analyzes the capacity of ecosystems to provide production and services that are important for human development. Most studies focused on a single ecosystem service and product measurement, but few studies focused on modeling ecosystem characteristics and relationships between ecosystems from multiple perspectives....

Mining will destroy and occupy a large amount of land resources and cause lasting negative impact on ecological environment, so it is urgent to evaluate the change of ecological environment quality in mining area. In order to accurately monitor the ecological environment quality of the mining area, this study took 24 annual Landsat images of the Zh...

Hongshaquan open-pit coal mine located in desertification area of western China is one of the important coal production bases in China, and salinization is an important factor affecting the ecological environment in this area. Based on Landsat (30m), Sentinel-2 (10m) and UAV (0.188m) multi-spectral images, 10 salinization indexes were calculated in...

Traditional methods of drought monitoring have high precision on the meteorological station scale, which needs to arrange numerous stations. Although the single-factor drought remote sensing index contains one or two parameters based on a single indicator can realize real-time and dynamic monitoring, which cannot accurately reflect drought informat...

Timely and accurate monitoring of soil respiration (Rs) in desertified mining areas is helpful to understand its spatial and temporal distribution and changes, which is crucial for assessing the carbon cycle of ecologically fragile open-pit mining ecosystems. In this study, we acquired multispectral and thermal infrared images of five experimental...

Xinjiang is a coal-rich region with many bare rocky and gravelly areas with a delicate and fragile ecology. What is the ecological impact of mining activities? In this study, the Salinity Index (SI-T), New Gravel Land Index (NGLI), and Land Deterioration Index (LD) were used to establish an improved remote sensing ecological index (IRSEI) for the H...

In-depth understanding of the diurnal variation of soil respiration and its influencing factors at different depths under different land use patterns in desertified open-pit mines is crucial to assessing the carbon cycle of ecosys-tems in ecologically fragile open-pit mines. Taking the Hongshaquan open-pit mine as the research object, the EGM-5 por...

The ecological environment in Xinjiang Gobi open-pit mining area is fragile and easily affected by natural and man-made factors. Therefore,the ecological environment in Xinjiang mining area has been paid more attention. Taking Wucaiwan open-pit mining area in Xinjiang Uygur Autonomous Region as study area,coal dust index,salinity index and land deg...

Establishing a more accurate remote sensing ecological index is necessary to evaluate urban ecological quality and provide timely warnings. Taking the Beijing city as the study area, this paper used five indices (vegetation index, humidity, Land Surface Temperature (LST), Normalized Difference Build-up and bare Soil Index (NDBSI) and air quality) t...

Objective The existing change detection network relies on layer-by-layer convolution for feature extraction, which loses some information and lacks the ability to mine important change features. Therefore, how to effectively suppress the influence of the background and increase the network's learning of salient features and generate recognizable fe...

The variations in the lake area, water level, and water volume change of the Aral Sea from 1987 to 2018 were analyzed in this study, which is based on the multi-temporal Landsat images and remote sensing water body index (Normalized Difference Water Index, NDWI). Lake shorelines were automatically digitized and visualized using Net Shoreline Moveme...

This article aims to explore the applicability of SMMI (Soil moisture monitoring index), MSMMI (Modified soil moisture monitoring index), PDI (Perpendicular drought index), and MPDI (Modified perpendicular drought index) in estimating soil moisture (SM) in farmland. The random forest classifier (RFC) was used to obtain two-stage land cover types ma...

Nowadays, there are many dryness indices based on vegetation indices (VIs)-land surface temperature (Ts) feature space. Which dryness index should we use in dryness monitoring? The differences and capabilities for dryness monitoring among seven indices were evaluated in this study. These dryness indices were based on VIs-Ts or Albedo feature space....

The Shendong mining area is an important coal production base in China,and the coal mining has caused strong disturbance to its fragile ecological environment. It is necessary to use scientific methods to reveal the evolution of the ecosystem service function of the Shendong mining area,and improve the management system of green mining and sustaina...

Hongjiannao groundwater exchange was the largest desert freshwater lake in China (57.25 km2 in 1986). However, it shrank sharply over the past 34a (1986–2019), with the smallest lake area 31.41 km2 in 2015. The objective of this study was to use the Landsat images, ASTER GDEM V2 data, and meteorology and statistics data, in combination with the wat...

There are two main categories of dryness monitoring indices based on spectral feature space. One category uses the vertical distance from any point to a line passing through the coordinate origin, which is perpendicular to a soil line, to monitor the dryness conditions. The most popular indices are the Perpendicular Dryness Index (PDI) and the modi...

There are two main categories of dryness monitoring indices based on spectral feature space. One category uses the vertical distance from any point to a line passing through the coordinate origin, which is perpendicular to a soil line, to monitor the dryness conditions. The most popular indices are the Perpendicular Dryness Index (PDI) and the modi...

Hongjiannao groundwater exchange was the largest desert freshwater lake in China (57.25 km ² in 1986). However, it shrank sharply over the past 34a (1986–2019), with the smallest lake area 31.41 km ² in 2015. The objective of this study was to use the Landsat images, ASTER GDEM V2 data, and meteorology and statistics data, in combination with the w...

Drought is one of the most damaging events in the grassland ecosystem. The detection and monitoring of drought are very important to maintain the balance of the grassland ecosystem. The potential of Sun-induced Chlorophyll Fluorescence (SIF) for drought detection and monitoring were explored in this study. Based on significant negative anomalies of...

Lakes are crucial elements of the Earth’s hydrological cycle and play an important role in the regulation of the Earth’s material exchange and energy transfer. The expansion or contraction of lakes has an important influence on water use in agricultural and biogeochemical activities. It is of great significance to establish a long time series datas...

Accurate prediction of crop yield before harvest is critical to food security and importation. The calculated ten explanatory factors and autumn crop yield data were used as data sources in this research. Firstly, a Redundancy Analysis (RDA) was employed to carry out explanatory factors and feature selection. The simple effects of RDA were used to...

This paper employs the Normalized Difference Water Index (NDWI), Automated Water Extraction Index (AWEI), Modified Normalized Difference Water Index (MNDWI) and Near-Infrared (NIR) threshold methods to extract the boundaries of Hongjiannao Lake, Zasak reservoir and Changjiagou reservoir. The real boundary of the water bodies was obtained by visual...

A set of indicators that focus only on numerical values is constructed based on remotely sensed images to assess soil moisture conditions. The quantitative evaluation of soil moisture variation in two periods is rarely referred to in the current literature. In this study, a scaled soil moisture monitoring index (SSMMI) was established to monitor th...

To understand the influence of underground mining disturbances on the shallow soil moisture in the Daliuta coal mine, remote sensing monitoring of the temporal and spatial evolution of surface soil moisture and the influence of mining on multi-source, multi-temporal and high spatial resolution remote sensing data were carried out. The scale effect...

In this paper, 329 Landsat images combined with the Deeply Clear Water Extraction Index were applied to delineate boundaries of Hongjiannao Lake during 1986–2018. The net shoreline movement (NSM) and linear regression rate (LRR) achieved by Digital Shoreline Analysis System (DSAS) were employed to depict the distance and rate change of lake shoreli...

Land surface water is one of the most vital resources on Earth for human survival, and it is necessary to distinguish water bodies from non-water features. Remote sensing techniques are among the most widely used approaches for monitoring water resources; many waterbody delineation methods have been proposed, and multi-band spectral water indexes a...

The ecological conditions in urban area are greatly changed during the process of industrialization and urbanization of China. The Pressure-State-Response (PSR) framework is the most popular method to evaluate the ecological quality by integrating a set of remote sensing and statistical indicators into one index through a weighting method. However,...

By using MODIS data from May 2000 to May 2016, constructing the NIR-Red space, and collecting the Perpendicular Drought Index (PDI), Modified Perpendicular Drought Index (MPDI), Soil Moisture Monitoring Index (SMMI) and Modified Soil Moisture Monitoring Index (MSMMI),we studied the validity of these four indexes and the correlation of them with the...

Traditional NDVI-Ts space is triangular or trapezoidal, but Liu et al. (2015) discovered that the NDVI-Ts space was bi-parabolic when the study area was covered with low biomass vegetation. Moreover, the numerical value of the indicator was considered in most of the study when the drought conditions in the space domain were evaluated. In addition,...

Soil moisture is connected one of the most important environmental factors and participation as an important parameter in hydrological, meteorological and agricultural production process. Soil moisture monitoring by remote sensing has become the focus of research at home and abroad. This paper takes Shendong mining area as an example and choose 201...

Soil moisture is the key element in study of underground coal mining disturbance in desert mining area. The Shendong mining area in China, a typical desert mining area, and was selected as the research region. Temperature vegetation dryness index (TVDI), acquired from the bi-parabolic NDVI-Ts space, was applied to monitor the soil moisture conditio...

Lake level, area, and volume changes can describe the fluctuation of water bodies. In this study, ICESat/Hydroweb and Landsat data recorded with irregularly time intervals from 1975 to 2015 were used to examine changes in lake level and area which were combined to indirectly estimate water volume variations of Lake Hulun. The time series of lake le...

Soil moisture has become the dominant factor in the Shendong mining area for vegetation growth and recovery. Soil moisture monitoring index (SMMI) and the Perpendicular Drought Index (PDI) were widely used to monitor soil moisture, which were all obtained from the NIR-Red spectral space. To validate whether SMMI and PDI were all can be applied to e...

In order to understand recent changes in inter-annual trends in water area of Hongjiannao Lake and to explore influence factors affecting the changes, the Landsat data during the year from 1988 to 2014 was processed by Modified Normalized Difference Water Index (MNDWI) and the water body boundary of Hongjiannao Lake was extracted. Then the water ar...

. Normalized difference vegetation index (NDVI) and land surface temperature (T-s) data from the multitemporal Moderate Resolution Imaging Spectroradiometer (MODIS) were used to analyze the NDVI-T-s space. Unlike the traditional triangular or trapezoidal NDVI-T-s space, the NDVI-T-s space in this study was biparabolic when NDVI values below 0.15 we...

This paper based on Huojitu mine, in Daliuta Shendong mining coal mining-induced subsidence area reclamation test base of Amorpha fruticosa pilot areas for the research of microbial objects, dynamic monitoring of environmental mitigation HJ-CCD satellite remote sensing image data between 2009-2013 and effect of mycorrhizal inoculation on ground veg...

As a method to analyze the soil moisture, the NDVI-Ts space has aroused much attention. The paper uses the method of TVDI which calculated from the NDVI-Ts space to monitor the soil moisture status of Shendong mining area which is located in arid and semiarid area in Northwest China from 6 September to 8 November. The soil moisture status come from...