Trends in reference evapotranspiration and its attribution over the past 50 years in the Loess Plateau, China: implications for ecological projects and agricultural production

Shi, Zhou; Xu, Lihong; Yang, Xiaohui; Guo, Hao; Dong, Linshui; Song, Aiyun; Zhang, Xiao; Shan, Nan

doi:10.1007/s00477-015-1203-5

Cited by 39 publications

(31 citation statements)

References 42 publications

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“…However, the magnitude of decreasing rate of WS in the HRB was much greater than those in the other river basins [1,21] and different areas in China [65,66], and also in East Asia [67]. The recent declining WS trend is mostly a result of large-scale atmospheric circulation patterns on account of climate warming [68], weakened Siberian High and East Asia Monsoon [69], descending temperature and pressure gradient [69][70][71], and intensified Asian zonal circulation patterns [72]. In addition, increased land surface roughness caused by the increased vegetation cover can give a reasonable explanation for the decreasing WS trend.…”

Section: Temporal Change Trends Of Et Ref and Climate Factors In Hrbmentioning

confidence: 99%

Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Chu

Shen

et al. 2018

Water

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showed in spring. These phenomena could be reasonably explained by a significantly increasing mean temperature (TA), a significantly decreasing wind speed (WS), solar radiation (SR), and a slightly decreasing relative humidity (RH). The most sensitive factor to ET ref was RH in most sub-regions and most time scales, except in the growing season and summer. Based on the developed differential equation method, the dominant factor of the decreasing ET ref was WS in the annual time scale, spring, autumn, and winter in most sub-regions, except the lower HRB, which then shifted to SR in the growing season and summer. However, in the lower HRB, the significantly decreasing RH was the most dominant factor, especially in the annual time scale, growing season, and spring, which might be responsible for the slightly increasing ET ref there.

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Section: Temporal Change Trends Of Et Ref and Climate Factors In Hrbmentioning

confidence: 99%

Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Chu

Shen

et al. 2018

Water

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“…The results for the climatic trends for T a , T max , T min and DTR were 0.204, 0.248, 0.233 and 0.003 °C (10 years) −1 , respectively, these being lower than the corresponding results for the whole of the Loess Plateau (Shi et al , ) and for the desertification‐prone area of China (Shi et al , ). Although climate warming was predominantly linked to increased emissions of anthropogenic greenhouse gases and aerosols (IPCC, ; Najafi et al , ; Xu et al , ), agricultural irrigation‐induced cooling effects may partly compensate for greenhouse gas warming (Bonfils and Lobell, ; Cook et al , ), effects which have been observed or simulated by previous investigations (Lobell et al , ; Sacks et al , ; Han and Yang, ; Huber et al , ).…”

Section: Discussionmentioning

confidence: 99%

Agricultural irrigation‐induced climatic effects: a case study in the middle and southern Loess Plateau area, China

Shi

Wang

et al. 2016

Intl Journal of Climatology

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Irrigation and rain‐fed agriculture, the main agricultural practices in the middle and southern Loess Plateau area, impact the regional climate in different ways. Based on 38 meteorological stations in the middle and southern Loess Plateau area, the effects of agricultural irrigation on climatic variables from 1960 to 2005 were evaluated. Climatic trends from non‐irrigated areas were used as a reference. Trends in climatic variables for the growing season and the summer period are negatively correlated with the percentage of cultivated land within a 3 km radius of the meteorological stations. Trends for the average summer temperature (Ta), maximum temperature (Tmax), minimum temperature (Tmin) and the diurnal temperature range (DTR) decreased by 0.065, 0.073, 0.054 and 0.025 °C per decade, respectively. Summer net solar radiation (SR) decreased by 0.0325 MJ m−2 day−1 per decade and summer relative humidity (RH) increased by 0.255% per decade with a 10% increase in the area of cultivated land. The climatic effects on meteorological stations in irrigated areas are compared to the trends of non‐irrigated areas in the study region. The expansion of irrigation has had a noticeable cooling effect on summer Ta, Tmax, Tmin and DTR with values of 0.192, 0.193, 0.142 and 0.058 °C (10 years)−1, respectively. Irrigation increased RH by 0.916% per decade and net radiation reduced by 0.230 MJ m−2 day−1 per decade. On monthly scales, these effects were more obvious in June and August. The dependence of climatic trends on the proportion of cultivated land can be attributed to agricultural irrigation. The changes in climatic differences for Ta, Tmax, Tmin, RH and SR corresponded with the expansion of irrigation. The cooling effects induced by irrigation have also partly masked the effects of greenhouse gas‐induced warming.

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“…To alleviate ecological deterioration such as surface water loss, soil erosion, land desertification, and grassland degradation, China has implemented a series of ecological restoration projects since 2000 (Tian et al, ). Large‐scale afforestation created rapid vegetation restoration and has had beneficial impacts on local climate (Cao, Yu, Georgescu, Han, & Wu, ) and hydrological cycle (Shi et al, ). However, an excessive increase in vegetation cover through ecological projects can lead to a rapid increase in local ET.…”

Section: Discussionmentioning

confidence: 99%

Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic

Cao

et al. 2019

Hydrological Processes

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Trends in reference evapotranspiration and its attribution over the past 50 years in the Loess Plateau, China: implications for ecological projects and agricultural production

Cited by 39 publications

References 42 publications

Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Quantifying Climatic Impact on Reference Evapotranspiration Trends in the Huai River Basin of Eastern China

Agricultural irrigation‐induced climatic effects: a case study in the middle and southern Loess Plateau area, China

Impacts of climate variability and landscape pattern change on evapotranspiration in a grassland landscape mosaic

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