scholarly journals Response of Ecological Environment to Climate Change in the Source Area of the Yangtze River Based on the Observation During 2005-2015

2021 ◽  
Author(s):  
Ling-Ling Song ◽  
Qing Tian ◽  
Zong-Jie Li
Keyword(s):  
Climate Change ◽  
Yangtze River ◽  
Source Area ◽  
Ecological Environment ◽  
The Yangtze River

scholarly journals Attribution Analysis of Climate and Anthropic Factors on Runoff and Vegetation Changes in the Source Area of the Yangtze River from 1982 to 2016

Land ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 612
Author(s):  
Guangxing Ji ◽  
Huiyun Song ◽  
Hejie Wei ◽  
Leying Wu
Keyword(s):  
Climate Change ◽  
Yangtze River ◽  
Vegetation Change ◽  
Climatic Factors ◽  
Source Area ◽  
Linear Regression Method ◽  
The Yangtze River ◽  
Potential Evaporation ◽  
Runoff Change ◽  
The Impact

Analyzing the temporal variation of runoff and vegetation and quantifying the impact of anthropic factors and climate change on vegetation and runoff variation in the source area of the Yangtze River (SAYR), is of great significance for the scientific response to the ecological protection of the region. Therefore, the Budyko hypothesis method and multiple linear regression method were used to quantitatively calculate the contribution rates of climate change and anthropic factors to runoff and vegetation change in the SAYR. It was found that: (1) The runoff, NDVI, precipitation, and potential evaporation in the SAYR from 1982 to 2016 all showed an increasing trend. (2) The mutation year of runoff data from 1982 to 2016 in the SAYR is 2004, and the mutation year of NDVI data from 1982 to 2016 in the SAYR is 1998. (3) The contribution rates of precipitation, potential evaporation and anthropic factors to runoff change of the SAYR are 75.98%, −9.35%, and 33.37%, respectively. (4) The contribution rates of climatic factors and anthropic factors to vegetation change of the SAYR are 38.56% and 61.44%, respectively.

Ecological Environment of Wetland Nature Reserve along the Yangtze River in Anqing and Economic Development Policies

2011 ◽  
Vol 71-78 ◽  
pp. 2727-2730
Author(s):  
Min Yi Huang ◽  
Ren Yan Duan ◽  
Li Feng Wu ◽  
Shan Shan Zhu ◽  
Xue Li
Keyword(s):  
Yangtze River ◽  
Nature Reserve ◽  
Academic Community ◽  
Ecological Environment ◽  
The Yangtze River ◽  
Ecological Benefits ◽  
Development Policies ◽  
Water Conservancy ◽  
And Function ◽  
Wetland Resources

The wetland possesses very important environmental function and ecological benefits. Study on the Wetland Nature Reserve along the Yangtze River in Anqing has become a focus of academic community for its well nature. The resources and function of wetland along the Yangtze River in Anqing were analyzed and the dangers faced by the wetland from agricultural pollution, water conservancy, unreasonable fishery production, invasive species were discussed. In order to promote sustainable development of wetland resources and environment, the suggestions and policies about the protection for Anqing wetland resources and environment were proposed.

scholarly journals Spatial–Temporal Evolution and Correlation Analysis of Ecosystem Service Value and Landscape Ecological Risk in Wuhu City

2020 ◽  
Vol 12 (7) ◽  
pp. 2803 ◽  
Author(s):  
Yanyan Jia ◽  
Xiaolan Tang ◽  
Wei Liu
Keyword(s):  
Ecological Risk ◽  
Ecosystem Service ◽  
Yangtze River ◽  
Temporal Evolution ◽  
Unit Area ◽  
Risk Index ◽  
Ecological Environment ◽  
The Yangtze River ◽  
Ecosystem Service Value ◽  
Service Value

The comprehensive application of ecosystem service value (ESV) and ecological risk index (ERI) assessment can provide better decision support for regional ecological environment protection. Based on the remote sensing image data of Wuhu city of 1995, 2005 and 2016, the paper analyzed the spatial-temporal evolution of ESV and ERI in Wuhu city and its associated characteristics using an ESV, ERI assessments and a bivariate spatial autocorrelation method. The results showed that (1) the total ESV of Wuhu city continued to decline from 1995 to 2016, with a decrease of US$ 363.664 million. The total ESV per unit area of the sampling plot decreased, and the high-value was mainly distributed in areas within 5–10 km along the Yangtze River floodplain. (2) Wuhu city was mainly dominated by a relatively low ERI and medium ERI from 1995 to 2016. The high-value areas were mainly distributed in the mainstream of the Yangtze River, and the overall ERI improved. (3) There was a positive spatial correlation between the total ESV per unit area and ERI in Wuhu city, and these areas were mainly distributed in the Yangtze River mainstream region. According to this research, it is necessary to pay attention to the protection of wetland and forest landscapes, strengthen wetland ecological protection based on the Yangtze River and protect and restore natural mountain forests, all of which play important roles in improving the ecosystem service function of Wuhu city and protecting the ecological environment of the Yangtze River. We should act on that knowledge, and produce effective environmental regulations and habitat restoration efforts that improve the ESV and reduce the ERI. The findings of the study can serve as a reference for the management and protection of ecological environments in river-crossing cities.

Integrate risk from climate change in China under global warming of 1.5°C and 2.0°C

2020 ◽  
Author(s):  
Lulu Liu ◽  
Shaohong Wu ◽  
Jiangbo Gao
Keyword(s):  
Climate Change ◽  
Global Warming ◽  
Extreme Events ◽  
Yangtze River ◽  
Heat Waves ◽  
Eastern China ◽  
Climate Impacts ◽  
Economic Losses ◽  
The Yangtze River ◽  
Climate Change Risk

<p>Risk of climate-related impacts results from the interaction of climate-related hazards (including hazardous events and trends) with the vulnerability and exposure of human and natural systems. Despite the commitment of the Paris Agreement, the integrate research on climate change risk combining risk‐causing factors and risk‐bearing bodies, the regional differences in climate impacts are still missing. In this paper we provide a quantitative assessment of hazards and socioeconomic risks of extreme events, risks of risk‐bearing bodies in China under global warming of 1.5 and 2.0°C based on future climate scenarios, and quantitative evaluation theory for climate change risk. For severe heat waves, hazards might significantly intensify. Affected population under 2.0°C warming might increase by more than 60% compared to that of 1.5°C. Hazards of severe droughts and floods might strengthen under Representative Concentration Pathway 8.5 scenario. Economic losses might double between warming levels of 1.5 and 2.0°C, and the population affected by severe floods might continuously increase. Under the integrate effects of multiple disasters, the regions with high population and economic risks would be concentrated in eastern China. The scope would gradually expand to the west with socioeconomic development and intensification of extreme events. High ecological risks might be concentrated in the southern regions of the Yangtze River Basin, while the ecological risk in northern China would expand. High agriculture yield risks might be distributed mainly in south of the North China Plain, the Sichuan Basin, south of the Yangtze River, and west of Northwest China, and the risk levels might continuously increase.</p>

Sign in / Sign up

Export Citation Format

Share Document