Drought monitoring of the wetland in the Tumen River Basin between 1991 and 2016 using Landsat TM/ETM+

Yu, Hangnan; Lan, Li; Zhu, Wei; Piao, Dongfan; Cui, Guishan; Kim, Moonil; Jeon, Seong Woo; Lee, Woo‐Kyun

doi:10.1080/01431161.2018.1524604

Cited by 15 publications

(19 citation statements)

References 25 publications

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“…A notable R 2 value of .71 was found between the daily estimated ET a and the soil temperature at a depth of 10 cm. Unlike VTCI and soil moisture (Yu et al, 2019), the relationship between these two factors does not exhibit a sharp decline with increasing depth; ET a and soil temperature were still correlated at a depth of 200 cm (R 2 = .59).…”

Section: Discussionmentioning

confidence: 89%

“…ET a fluctuation was more moderate in the DPRK section, although the mean daily ET a was generally comparable to those in China, except in 2008 ( Figure 3). This suggests that relatively simple economic activities in the south (DPRK), which mainly relies on agriculture (Yu et al, 2019), may have a smaller impact on water use. The ET a reduction in 1994 for this region is similar to that in China, whereas there was a distinct difference between the ET a of the two regions in 2008.…”

Section: Discussionmentioning

confidence: 99%

“…In general, human disturbance is considered as the primary cause of wetland loss and degradation (Chen, Zhang, Gao, & Nie, 2018; Hu, Niu, Chen, Li, & Zhang, 2017) due to its high frequency and severe damage to natural environments. Yu et al (2019) performed drought monitoring based on six epoch LANDSAT images in the TRB region and reported that soil moisture has gradually decreased over the last three decades. They reasoned that water shortages in the region are primarily due to human influence (e.g., water consumption increase) rather than climate change.…”

Section: Introductionmentioning

confidence: 99%

“…As a follow‐up to Yu et al (2019), this study aims to quantify the spatiotemporal changes in ET and identify potential human impacts over a 30‐year period, by observing land cover changes and historical events and addressing the following questions: (a) What has happened to ET in the TRB region over the past three decades? (b) Do different human activities have different effects on the temporal and spatial changes of ET?…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, the estimation results were verified using the soil temperature for 2017. In order to estimate ET, meteorological data, such as daily maximum and minimum temperatures, relative F I G U R E 1 Geographical location of the study area and watershed delineated from Shuttle Radar Topography Mission (SRTM) 30-m digital elevation model (DEM) provided by NASA (Yu et al, 2019) [Colour figure can be viewed at wileyonlinelibrary.com] T A B L E 1 LANDSAT 5 and 8 scenes used for evapotranspiration (ET) estimation ET a can be estimated as a fraction of ET o :…”

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confidence: 99%

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Inferring the potential impact of human activities on evapotranspiration in the Tumen River Basin based on LANDSAT imagery and historical statistics

Lee

Lan

et al. 2020

Land Degrad Dev

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Understanding the spatial and temporal changes in actual evapotranspiration (ETa) caused by different human activities is important for water management in water‐sensitive areas, because ETa plays a major role in regulating the availability of water on land. Thus, ETa observation is particularly important for observing land degradation in the watershed. This study used the operational simplified surface energy balance (SSEBop) model to perform ETa estimations and observations in the Tumen River Basin (TRB), covering the border of China and Democratic People's Republic of Korea (DPRK), over the last 30 years by using eight periods of clear‐sky LANDSAT Thematic Mapper/Operational Land Imager (TM/OLI) and thermal infrared sensor (TIRS) data. To assess the reliability of the ETa estimations, multilayer soil temperatures from the China Meteorological Administration (CMA) Land Data Assimilation System Version 2.0 (CLDAS‐V2.0) were utilized. The highest R2 (.71) between ETa and soil temperature was observed in layers shallower than 10 cm; this value of R2 gradually decreased to .57 at a depth of 200 cm. The average ETa of the TRB declined from 1.65 mm in 1985 to 1.03 mm in 2017. The impact of human activities on water loss (ETa) was determined by comparing land cover changes observed by an object‐based image analysis (OBIA) approach and economic activities between 1994 and 2008. Varying economic activities and water depletion in different soil layers may have led to the variable ETa values between the northern (China) and southern (DPRK) part of the TRB during the last three decades.

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Section: Discussionmentioning

confidence: 89%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

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Inferring the potential impact of human activities on evapotranspiration in the Tumen River Basin based on LANDSAT imagery and historical statistics

Lee

Lan

et al. 2020

Land Degrad Dev

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Sugarcane water requirement and yield projections in major producing regions of China under future climate scenarios

Zhu,

Dong,

et al. 2023

Theor Appl Climatol

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Relative soil moisture is of great significance to the growth and yield of sugarcane.In this study, we use the relative soil moisture from the China Meteorological Administration Land Data Assimilation System (CLDAS) to dynamically evaluate the water requirement of sugarcane and its growth adaptability at different growth stages.Based on the data of relative soil moisture, air temperature, precipitation and soil temperature, a sugarcane yield model is established to analyze the projected change trends of sugarcane yield in China from 2020 to 2100 under three future scenarios.Analysis results show that sugarcane requires more water during the elongation stage but less water at the ripening stage. The relative soil moisture from the CLDAS can be used to calculate the proportion of the daily suitable area to the total planting area. The combining of relative soil moisture data and water requirement indicators can better characterize the water requirement during sugarcane growth. Suitable relative soil moisture during the tillering and elongation stages is the most critical factor that directly affects the sugarcane yield. From 2020 to 2100, sugarcane yield will increase first and then decrease sharply. The increase in emissions can lead to an apparent downward trend in sugarcane yield. Based on the CLDAS data and water requirement indicators, a new method for monitoring the sugarcane growth throughout the growth period is proposed in this study. In the SSP370 and SSP460 scenarios, the sugarcane yield showed a downward trend, and there were mutations in 2064 and 2052, respectively.After the mutation, the yield decline trend was more obvious. Under the SSP585 scenario model, the sugarcane production showed an upward trend from 2022 to 2033, and a downward trend after 2033, and a mutation occurred in 2051. After the mutation, the downward trend of sugarcane production was more obvious.

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Assessing the performance of satellite soil moisture on agricultural drought monitoring in the North China Plain

Cao

Chen

et al. 2022

Agricultural Water Management

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Drought monitoring of the wetland in the Tumen River Basin between 1991 and 2016 using Landsat TM/ETM+

Cited by 15 publications

References 25 publications

Inferring the potential impact of human activities on evapotranspiration in the Tumen River Basin based on LANDSAT imagery and historical statistics

Inferring the potential impact of human activities on evapotranspiration in the Tumen River Basin based on LANDSAT imagery and historical statistics

Sugarcane water requirement and yield projections in major producing regions of China under future climate scenarios

Assessing the performance of satellite soil moisture on agricultural drought monitoring in the North China Plain

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