A distributed modeling approach to water balance implications from changing land cover dynamics in permafrost environments

Geography and sustainability, Journal Year: 2024, Volume and Issue: 5(4), P. 561 - 576

Published: July 5, 2024

There is 78% permafrost and seasonal frozen soil in the Yangtze River's Source Region (SRYR), which situated middle of Qinghai-Xizang Plateau. Three distinct scenarios were developed Soil Water Assessment Tool (SWAT) to model effects land cover change (LCC) on various water balance components. Discharge percolation groundwater have decreased by mid-December. This demonstrates contributions subsurface water, diminish when freezes. During winter, surface inputs are low, storage becomes even more critical ensure supply due this periodic trend. An impermeable layer underneath active thickness decreases GWQ PERC LCC + scenario. The transport phase reached a point August precipitation, thawing, snowmelt caused LATQ surge. To prevent waterlogging save for dry periods, it necessary control peak flow phase. Hydrological processes, dynamics, changes SRYR difficult, according data. These interactions enhance circulation throughout year, recharge supplies, runoff, lateral flow. For region's resource management be effective sustaining ecohydrology, ensuring appropriate storage, alleviating freshwater scarcity, these dynamics must considered.

Language: Английский

---

Assessing water security and footprint in hypersaline Lake Urmia

Ecological Indicators, Journal Year: 2023, Volume and Issue: 155, P. 110955 - 110955

Published: Sept. 15, 2023

The quantitative assessment of water security including its distribution helps plan and manage adequate amounts quality to sustain livelihoods. This research introduces a hydrological modeling framework designed evaluate the spatial temporal fluctuations blue green water, aiming quantify status Lake Urmia in Iran. lake, recognized as second largest hypersaline lake globally, has experienced significant decline storage recent years. model, based on consumption population size was used investigate footprint while quantifying changes availability water. As results demonstrate, monthly annual coefficient variation for (41.1 % 27.6%, respectively) greater than (32.3% 21.7%, respectively), hence flow showed more homogeneous among different sub-basins. At same time, differs between various components footprint. Agricultural use requires most this basin, with scarcity 0.27. vulnerability value total indicates lower risk crisis under low-flow conditions. In addition, freshwater provision indicator each sub-basin varies middle (0.64) (0.80) parts. Thus, these parts, can be consumed less negative impact environment. conclusion, environmental situation clearly decreased over last decade which urgent management action (e.g., changing irrigation pattern) mitigate an crisis. offers precise quantifiable references related resources security, enhance targeted within study area. Our provides basis inform similar watersheds across globe.

Language: Английский

---

Projected climate change impacts on the availability of blue and green water in a watershed of intensive human water usage

Journal of Hydrology Regional Studies, Journal Year: 2024, Volume and Issue: 53, P. 101827 - 101827

Published: May 22, 2024

The Dongjiang River Basin (DRB), Southern China. Quantifying the impacts of climate change on blue water (BW) and green (GW) resources is important for efficient management watersheds socio-economic development. This study projects availability in DRB, using multi-water-flux calibrated soil assessment tool (SWAT), future land use simulation model (Geosos-FLUS), outputs 21 global models under two Shared Socioeconomic Pathways (SSP126 SSP585) that were bias-corrected by utilizing quantile delta mapping method near (2030–2064) far (2065–2100). results indicate annual precipitation, temperature, extreme precipitation are projected to increase DRB future. Future increases intensity result variations partition water, flow (GWF), decreases storage (GWS). Climate decrease seasonal exacerbate scarcity (GWSC) DRB. Therefore, it crucial consider changes regional security. Our finding can assist watershed managers identifying hydrologic risks developing appropriate adaptation policies.

Language: Английский

---

Supplementary material to "Combined impacts of climate change and human activities on blue and green water resources in the high-intensity development watershed"

Published: May 2, 2024

Language: Английский

---

Comment on hess-2024-106

Published: June 11, 2024

Abstract. Sustainable management of blue and green water resources is vital for the stability sustainability watershed ecosystems. Although there has been extensive attention to (BW) which closely related human beings, relevance (GW) ecosystem security typically disregarded in resource evaluations. Specifically, a scarcity comprehensive study on detection attribution variation Dongjiang River Basin (DRB), an important source regional supply Guangdong-Hong Kong-Macao Greater Bay Area (GBA) China. Here we assess variations BW GW scarcity, quantify impacts climate change land use DRB using multi-water-flux calibrated Soil Water Assessment Tool (SWAT). Results show that storage (GWS) increased slowly with rate 0.14 0.015 mm a^-1, respectively, while flow (GWF) decreased significantly at -0.21 a^-1. The degree low, per capita more than 80 % exceed 1700 m³ capita^-1 Attribution results 88.0 %, 88.5 39.4 changes BW, GWF, GWS from change, respectively. Both have decrease (land change) (increase) GWF DRB. These findings can guide optimize allocation between upper reach lower areas further improve understanding evolution patterns humid regions.

Language: Английский

---

Comment on hess-2024-106

Published: June 12, 2024

Abstract. Sustainable management of blue and green water resources is vital for the stability sustainability watershed ecosystems. Although there has been extensive attention to (BW) which closely related human beings, relevance (GW) ecosystem security typically disregarded in resource evaluations. Specifically, a scarcity comprehensive study on detection attribution variation Dongjiang River Basin (DRB), an important source regional supply Guangdong-Hong Kong-Macao Greater Bay Area (GBA) China. Here we assess variations BW GW scarcity, quantify impacts climate change land use DRB using multi-water-flux calibrated Soil Water Assessment Tool (SWAT). Results show that storage (GWS) increased slowly with rate 0.14 0.015 mm a^-1, respectively, while flow (GWF) decreased significantly at -0.21 a^-1. The degree low, per capita more than 80 % exceed 1700 m³ capita^-1 Attribution results 88.0 %, 88.5 39.4 changes BW, GWF, GWS from change, respectively. Both have decrease (land change) (increase) GWF DRB. These findings can guide optimize allocation between upper reach lower areas further improve understanding evolution patterns humid regions.

Language: Английский

---

Spatiotemporal distribution and inter-media transfer of polycyclic aromatic hydrocarbons in Shanghai, China: Historical patterns and future trends

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 945, P. 173938 - 173938

Published: June 14, 2024

Language: Английский

---

Runoff Simulation and Analysis of Water Source in the High-Elevation and Cold Area of the Shaliu River Basin

Published: Jan. 1, 2024

Language: Английский

---

Reply on RC2

Published: June 23, 2024

Abstract. Sustainable management of blue and green water resources is vital for the stability sustainability watershed ecosystems. Although there has been extensive attention to (BW) which closely related human beings, relevance (GW) ecosystem security typically disregarded in resource evaluations. Specifically, a scarcity comprehensive study on detection attribution variation Dongjiang River Basin (DRB), an important source regional supply Guangdong-Hong Kong-Macao Greater Bay Area (GBA) China. Here we assess variations BW GW scarcity, quantify impacts climate change land use DRB using multi-water-flux calibrated Soil Water Assessment Tool (SWAT). Results show that storage (GWS) increased slowly with rate 0.14 0.015 mm a^-1, respectively, while flow (GWF) decreased significantly at -0.21 a^-1. The degree low, per capita more than 80 % exceed 1700 m³ capita^-1 Attribution results 88.0 %, 88.5 39.4 changes BW, GWF, GWS from change, respectively. Both have decrease (land change) (increase) GWF DRB. These findings can guide optimize allocation between upper reach lower areas further improve understanding evolution patterns humid regions.

Language: Английский

---

Reply on RC1

Published: June 23, 2024

Abstract. Sustainable management of blue and green water resources is vital for the stability sustainability watershed ecosystems. Although there has been extensive attention to (BW) which closely related human beings, relevance (GW) ecosystem security typically disregarded in resource evaluations. Specifically, a scarcity comprehensive study on detection attribution variation Dongjiang River Basin (DRB), an important source regional supply Guangdong-Hong Kong-Macao Greater Bay Area (GBA) China. Here we assess variations BW GW scarcity, quantify impacts climate change land use DRB using multi-water-flux calibrated Soil Water Assessment Tool (SWAT). Results show that storage (GWS) increased slowly with rate 0.14 0.015 mm a^-1, respectively, while flow (GWF) decreased significantly at -0.21 a^-1. The degree low, per capita more than 80 % exceed 1700 m³ capita^-1 Attribution results 88.0 %, 88.5 39.4 changes BW, GWF, GWS from change, respectively. Both have decrease (land change) (increase) GWF DRB. These findings can guide optimize allocation between upper reach lower areas further improve understanding evolution patterns humid regions.

Language: Английский

---