Polyethylene terephthalate (PET) is widely used as a primary plastic packaging material in the global socio-economic system. However, research on metabolic characteristics of PET industry across different countries, particularly regarding entire life cycle supply chain PET, remains insufficient, significantly hindering progress addressing pollution worldwide. This study employs Life Cycle Assessment-Material Flow Analysis (LCA-MFA) method to comprehensively analyze environmental impacts...

Recently, unprecedented extreme drought has appeared around the world. As most direct signal of drought, evapotranspiration deserves a more systematic and comprehensive study. Further depicting their divergence potential (ETp) actual (ETa) will help to explore limitation evapotranspiration. In this paper, multi-source remote sensing datasets from Climate Research Unit (CRU), Gravity Recovery Experiment (GRACE) its follow-on experiment (GRACE-FO), Global Land Data Assimilation System (GLDAS),...

Reference evapotranspiration (ET0) in the hydrological cycle is one of processes that significantly affected by climate change. The Qinghai–Tibet Plateau (QTP) universally recognized as a region sensitive to In this study, an area elevation curve used divide study into three zones: low (below 2800 m), medium (2800–3800 m) and high (3800–5000 m). cumulative anomaly curve, Mann–Kendall test, moving t-test Yamamoto test results show descending mutation occurred 1980s, ascending 2005. Moreover,...

With the decoupling elasticity model, this paper studies relationships (DRs) of total water uses (TWU) and provincial GDP, agricultural (AWU) added value (AAV), as well industrial (IWU) (IAV) respectively in Yunnan Guizhou during first ten years for implementation Great Western Development Strategy. The results indicate that DRs economic development are highly undesirable both provinces. Among three groups, AWU AAV worst all, with strong or weak coupling 5 10 years; IWU IAV slightly better 3...

The Heihe River Basin (HRB) is the second largest inland river basin in China, characterized by high diversity geomorphology and irrigated agriculture middle reaches. To improve knowledge about relationship between biotic hydrological processes, this study used Global Inventory Modeling Mapping Studies Normalized Difference Vegetation Index (NDVI) data (1982–2006) to analyze spatiotemporal variations vegetation growth using Mann—Kendall test together with Sen's slope estimator. results...

A gated recurrent unit (GRU) network, which is a kind of artificial neural network (ANN), has been increasingly applied to runoff forecasting. However, knowledge about the impact different input data filtering strategies and implications architectures on GRU forecasting model’s performance still insufficient. This study selected daily rainfall from 2007 2014 in Wei River basin Shaanxi, China, assessed six scenarios explore patterns that impact. In scenarios, four manually-selected or...

The influences of climate change on water resources availability in Jinjiang Basin, China, were assessed using the Block-wise use TOPmodel with Muskingum-Cunge routing method (BTOPMC) distributed hydrological model. ensemble average downscaled output from sixteen GCMs (General Circulation Models) for A1B emission scenario (medium CO 2 emission) 2050s was adopted to build regional scenario. projected precipitation and temperature data used drive BTOPMC predicting changes 2050s. Results show...

Reference evapotranspiration (ET0) is a key factor in the hydrological cycle and energy cycle. In context of rapid climate change, studying dynamic changes ET0 Tibetan Plateau (TP) great significance for water resource management Asian countries. This study uses Penman–Monteith formula to calculate daily TP subsequently Mann–Kendall (MK) test, cumulative anomaly curve, sliding t-test identify abrupt change points. Morlet wavelet analysis Hurst index based on rescaled range (R/S) are utilized...

As the most direct indicator of drought, dynamic assessment and prediction actual evapotranspiration (AET) is crucial to regional water resources management. This research aims develop a framework for AET evaluation based on multiple machine learning methods multi-source remote sensing data, which combines Boruta algorithm, Random Forest (RF), Support Vector Regression (SVR) models, employing datasets from CRU, GLDAS, MODIS, GRACE (-FO), CMIP6, covering meteorological, vegetation,...

Aimed at reducing simulation uncertainty of hydrological models in data-sparse basins where soil hydraulic data are unavailable, a method estimating water parameters and assessment tool (SWAT) from readily available information using pedotransfer functions was introduced. The evaluated through case study Jinjiang Basin, China performed based on comparison between two model calibrations: (1) estimated other obtained calibration; (2) all derived calibration. generalized likelihood estimation...

Abstract In view of the sparse, uneven distribution and poor data continuity measured soil moisture sites in China lack large‐scale research, set European Space Agency (ESA) Climate Change Initiative (CCI) was applied to carry out spatial‐temporal variation analysis five agricultural ecological zones Northern China. The Pearson correlation coefficient multiple‐component metric Kling–Gupta efficiency were used verify validity remote sensing analyze temporal spatial with concept persistence....

The water ecological environment problems brought about by rapid urbanization have prompted the proposal and implementation of different approaches to urban construction, such as eco-cities, best management practices (BMPs), low-impact development (LID). As one most representative policies in China, Water Ecological Civilization City (WECC) was proposed 2013, 105 cities were selected for pilot construction. Many studies evaluated effectiveness WECC but international quantitative comparison...

The Northeast China Plain is one of the main grain growing regions in China. Due to high latitude and black soil ecological system, crop growth there vulnerable climate change, which makes it important evaluate influences change on water resources. In this study, resources a typical basin northeast China, Second Songhua River Basin were assessed using SWAT model. Ensemble downscaled output from sixteen GCMs for A1B emission scenario 2050s was adopted as regional used drive model predict...

The Tonghui River–a treated effluent-affected urban river located in Beijing, China. Inspired by the signal processing theory, this study presented a simulation scheme for based on hydrologic monitoring, pattern recognization, extraction, and hydrologic/hydraulic modelling. It aimed to precisely depict flow patterns when detailed wastewater treatment plant effluent data was absent fill gap of application signal-based hydrological time series methods physically hydraulic simulation. Diurnal...

By using the RapidEye images of Xianxun Highway in 2010 and 2011, two monitoring indices, vegetation area coverage along roadsides highway, were estimated. Then region being influenced by highway construction was determined according to changing indices with different buffer distance. The results indicate that during period construction, changes are not significant general decreased is located both highway. Considering distance, spatial extent for up 1000 meter at sides findings this study...

The validation research is the basis of application remote sensing data. This study using soil surface measured data for 10 cm in Northeast China 1992-2013 to verify European space agency moisture set (ESA CCI SM). In this study, two methods evaluating revealing drought was used: common Pearson coefficient method and judgement coincidence degree drought. verification located main grain producing areas China, which dominated by rain-fed agriculture. After result analysis, feasible assessment...

LUCC (Land use and land cover change) is increasingly regarded as an important component of global environmental change sustainable development. In this study, regional type maps were drawn using the MODIS products from 2001 2010 based on modified classification scheme embodied by characteristics in Yunnan. Dynamic each was investigated statistics, dynamic transfer matrices, landscape pattern metrics. addition, driving factors discussed. The results showed that types Yunnan province,...