Abstract Baseflow plays a crucial role in sustaining the alpine ecosystem during rainless or cold periods. Despite its importance, information on how and why baseflow has changed source region of Yangtze River (SRYR) is sparse. In our study, statistical analysis elastic coefficient method were used to identify dynamic characteristics underlying causes. The results show that monthly contributed 62–97% runoff with mean value 75%, they followed remarkable increasing trends from 1957 2020....

The Nanliujiang catchment is one of major rice production bases South China. Irrigation districts play an important role in which requires a large quantity water. There are potential risks on future climate change response to production, agricultural irrigation water use and pollution control locally. SWAT model was used quantify the yield footprint (WF) this catchment. A combined method automatic manual sub-basin delineation for setup work reflect differences between rice. We validated our...

The statistical characteristics of precipitation play important roles not only in flood and drought risk assessments but also water resource management. This paper implements a analysis to study the spatial temporal variability upper reaches Hongshui River basin (UHRB), southwestern China, by analysing time series daily from 18 weather stations during period 1959 2015. To detect concentrations associated patterns, three indices, concentration index (PCI), degree (PCD), (PCP), were used....

The Hanjiang River, as a water donor basin, plays fundamental role in supporting supply security northern China while maintaining the health and stability of ecosystems within basin. However, combined influence climate change anthropogenic interference has resulted significant flow regime challenging sustainability river system. In order to understand impact above factors on runoff, we analyzed temporal spatial pattern runoff basin quantitatively assessed contribution human activities using...

Abstract To study the impact of land use/cover change (LUCC), relationship between precipitation and runoff was investigated. Our main objective to ensure reasonable development, management, sustainable utilization water resources at a watershed scale. investigate runoff, SWAT (Soil Water Assessment Tool) model developed by analyzing LUCC in Naoli River basin. Then, response analyzed under different conditions. The contribution coefficient use types calculated. results this research are as...

In the current human-influenced era, drought is initiated by natural and human drivers, activities are as integral to meteorological factors. large irrigated agricultural regions with high levels of intervention, where farmland soil moisture has usually been changed significantly high-frequency irrigation, actual severity distorted in traditional indices. this work, an index that considering irrigation processes based on Palmer (IrrPDSI) was developed interpret real conditions regions, a...

Safety, progress, and investment risks are correlated during the construction period of large-scale water transfer projects. However, previous studies have only considered individual risk factors, overlooking potential systemic posed to safety, investment, as well any underlying common cause failures. Since traditional analysis methods ill-suited addressing failure, this paper’s objective was establish a comprehensive evaluation index framework identify basic events failure. To do that, we...

Recently, large language models (LLMs) have demonstrated their effectiveness in various natural processing (NLP) tasks. However, the lack of tourism knowledge limits performance LLMs tourist attraction presentations and travel planning. To address this challenge, we constructed a supervised fine-tuning dataset for culture domain, named Cultour. This consists three parts: base QA data, travelogues diversity data. Additionally, propose TourLLM, Qwen-based model fine-tuned with Cultour, to...

The analysis of drought propagation has garnered mounting attention in the changing global environment. current studies tend to focus on characteristics from meteorological hydrological rivers. Lakes, despite being a key component watershed ecosystems, have received little their response and droughts. To this end, here, we investigated for lake determine time drought, analyzed correlations between standardized precipitation index (SPI), runoff (SRI), water level (SWI). Lake Baiyangdian China...

In the past few decades, water resources in Tang–Bai River Basin showed a declining trend, due to human–driven alteration of surface and groundwater management. There are potential risks sustainable utilization future response agricultural, industrial, domestic supply. this work, we used allocation regulation model based on SWAT (SWAT–WARM model) quantify characteristics under human activities basin. The multi–source supply module was modified improve applicability SWAT–WARM We validated our...

Water and energy are basic resources for urban development. It is of extreme importance to balance economic development, water security, environmental sustainability at the city level. Although many studies have focused on energy-related CO2 emissions or resources, individually, in relation socioeconomic few considered as synchronous limiting factors. Here, taking Beijing an example, a partial least squares STIRPAT model—a method that combines with (stochastic impacts by regression...

The intense climate changes and human activities have a great impact on the variation of runoff coastal area South China. In this work, Soil Water Assessment Tool (SWAT) is used to quantify land use change Nanliujiang catchment by setting 4 scenarios land-use change. results show simulated measured values had similar trend. value relevant coefficient above 0.8, Nash-Sutcliffe efficiency about which indicate that SWAT model fit for study area. annual average depth during period from 1995 2013...

In order to quantitatively analyze the interrelationship among total water consumption, use efficiency and river quality, this paper takes Yulin Basin as study object constructs a "quantity-quality-efficiency" joint regulation model based on SWAT_WAQER, calibrates runoff quality. By setting five scenarios of industrial agricultural irrigation efficiency, SWAT_WAQER is used simulate pollution emission, response state quality cross-sections under each scenario, interaction them. The results...

Agricultural irrigation is an important factor affecting the development of agricultural drought, which not showed in Palmer Drought Severity Index (PDSI). In this work, water balance model PDSI has been modified by adding items, improves accuracy calculation results and shortens time step. The (M_PDSI) constructed using daily weather data from 1985-2012 study area. Weekly indices cumulated each growth stage are used for implementation crop models a linear multiple regression model. yield...

Rice growth is very sensitive to climate factors such as precipitation, air temperature and carbon dioxide concentration. The change in the global has potential risks rice production agricultural irrigation South China. In this study, SWAT model used analyse changes of yield water consumption Nanliujiang Catchment Guangxi Province. A method subbasin delineation for setup reflect differences between areas use rice, simulation values yield, evapotranspiration runoff are validated. Finally,...