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- 저자 : 사예드사자한사디키 ( Sayed Shajahan Sadiqi ) (검색결과 4 건)
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황강에서의 the Standardized Water Supply Demand지수를 이용한 시공간적 생태가뭄 패턴
사예드사자한사디키 ( Sayed Shajahan Sadiqi ),홍은미 ( Eun-mi Hong ),남원호 ( Won-ho Nam ) 한국농공학회 2022 한국농공학회 학술대회초록집 Vol.2022 No.-
Globally, new types of drought are arising as a result of climate change, increasing teleconnection patterns, rising water usage by people, and historical environmental influences that raise the chance of transcendent ecological effects. Understanding this altering depiction of drought and its significant ecological effects is one of today’s major challenges.The current study used a unique drought index, the standardized supply-demand water index (SSDI), and a run theory to detect ecological drought occurrences and characteristics of drought in affected in the Hwang River. Hence, to assess drought-prone areas, the bivariate probability and return period will be calculated using a two-dimensional joint copula. The core results show that the Spatio-temporal characteristics of ecological drought were successfully recognized using the spatial and temporal identification approach; in comparison to the SPEI meteorological drought index, the SSDI is more credible and can more readily and effectively capture the entire properties of ecological drought information; the Hwang river had seen the most severe drought occurrences between the late 1990s and the mid-2020s. lastly, the drought duration and severity in the Hwang area were more responsive to temperature when temperatures rise around 1.1°C, the average drought duration and severity rise around 16 % and 26 %, respectively. This suggested that the Hwang River has been exposed to more severe heat stress in the twenty-first century. This new ecological droughts index will serves as a road map for future research and management improvements that will promote forward-thinking, collaborative methods to reducing the risk of drought to our ecological systems.
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기후 변화의 잠재적 영향과 아프가니스탄의 농업 생산성에 미치는 영향
사예드사자한사디키 ( Sayed Shajahan Sadiqi ),홍은미 ( Eun-mi Hong ),남원호 ( Wan-ho Nam ) 한국농공학회 2020 한국농공학회 학술대회초록집 Vol.2020 No.-
Climate change has a severe impact on the availability of several resources on the earth especially water resources. As a pathway agriculture is an economic sector, that is the most vulnerable sector to the climate change. Giving to the latest estimates, farmers’ adaptation of farm production to climate change is predictable. The climate characteristics that are projected have the most direct impacts on agricultural productivity are: rise in temperature, the change in the frequency and severity of precipitation and of thrilling weather phenomena, and increase the level of CO<sub>2</sub> accessible for photosynthesis. Based on the projection, reduction of more than 5 % annual rainfall by 2050 in the western part of Afghanistan with temperatures are expected to increase more than the global average. Under a high greenhouse gas emissions scenario (RCP8.5), maximum warming could reach about 2.3℃ until 2050, and up to 6.5℃ by 2100. Under a lower emissions scenario (RCP4.5), warming is expected to reach 1.7℃ by 2050 and then upland around 2℃ by 2100. Afghanistan will also start to experience more seasonal variation in temperature and rainfall with more warming in the winters than summers. The longevity of heat waves across Afghanistan has extended in latest years with warmer night temperatures and hotter days, and this trend is expected to continue. Observed signal suggests that climate change is already occurred and has a substantial impact on agricultural productivity. Farmers have to adapt to the expected impacts of climate change in order to sustain their standard of living. The adaptation of agriculture to climate change includes reform of crops, adapted plant varieties, cropping systems and changes in cultivation practices. Policies are essential to take into account the multidimensionality of recent agriculture and the importance of sustainable agricultural development.
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지속가능한 사회-생태적 회복력을 평가하기 위한 통합적 접근: 춘천 사례를 중심으로
사예드사자한사디키 ( Sayed Shajahan Sadiqi ),홍은미 ( Eun-mi Hong ),남원호 ( Won-ho Nam ) 한국농공학회 2023 한국농공학회 학술대회초록집 Vol.2023 No.0
Given the increasing challenges posed by climate change, urbanization and resource demands, there is a growing focus on the need to promote socio-ecological resilience. This study takes an approach to assess the socio-ecological resilience of Chuncheon City in South Korea. It employs tools and methods to examine how environmental factors interact to shape the area's ability to adapt and thrive amidst changing pressures. Our goal is to gain an understanding of its current environmental situation and prospects concerning socio-ecological resilience. The analytical method includes an investigation of land use dynamics, water quality trends, and ecosystem service patterns, which is enhanced by advanced models such as Agro-IBIS, MODFLOW, SWAT, and THMP. In addition, the study employs a participatory method, involving stakeholders to improve understanding of local dynamics and what is needed. Therefore, SWAT analysis has already yielded preliminary results, suggesting fluctuating nitrogen, suspended particles, and phosphorus loadings within certain ranges from -4.5 to +2.3%, -5.8 to +29.0%, and +3.7 to +17.4%, respectively. Furthermore, forecasts predict significant shifts in evapotranspiration (+3.2% to +17.2%), streamflow (-9.1% to +8.1%), and soil moisture (0.1% to 0.7%) between 2040 and 2080. Additionally, projections of potential climate changes indicate temperatures will increase by 1.3 to 2.1°C, and precipitation will rise by 31 to 61mm by the end of the century (under SSP126 and SSP585). These findings form the cornerstone of the study's conclusions and emphasize the importance of including stakeholders in the development of effective resilience solutions. This study, which is still in progress, is expected to create a framework that not only assesses the many facets of socio-ecological resilience but also offers helpful suggestions for managing environmental pathways toward sustainable development and assisting stakeholders, policy-making to successfully address upcoming issues along with enhancing sustainability and resilience in other similar areas.
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