Evaluation of impacts of climate change and human activities on streamflow in the Poyang Lake basin, China

2016 ◽  
Vol 30 (14) ◽  
pp. 2562-2576 ◽  
Author(s):  
Qiang Zhang ◽  
Jianyu Liu ◽  
Vijay P. Singh ◽  
Xihui Gu ◽  
Xiaohong Chen
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Poyang Lake ◽  
Lake Basin ◽  
Poyang Lake Basin ◽  
Impacts Of Climate Change

Historical environmental changes in the Poyang Lake basin (Yangtze River, China) and impacts on agricultural activities

The Holocene ◽  
2021 ◽  
pp. 095968362110477
Author(s):  
Maofeng He ◽  
Fengxian Bu ◽  
Claudio O Delang ◽  
Jialin Xie ◽  
Quan Ye ◽  
...  
Keyword(s):  
Climate Change ◽  
Lake Water ◽  
Human Activities ◽  
Environmental Changes ◽  
Poyang Lake ◽  
Lake Basin ◽  
Lake Area ◽  
Poyang Lake Basin ◽  
Past 2000 Years ◽  
Floods And Droughts

Climate change and human activities have been an important part of studies regarding historical environmental changes in China over the past 2000 years. In this study, we focused on environmental changes, that is, natural disasters and human activities, in the Poyang Lake Basin over the past 2000 years, to analyze interactions between land use cover changes and human activities from the perspective of regional sustainable development. We collected historical records of climate and hydrology, floods and droughts, and rivers and lakes in the Poyang Lake area, and established time sequences for the floods and droughts, lake water level and lake area, amount of farming land, and population, in order to discuss interactions between changes in the environment and the climate, with emphasis on the impacts of extreme events on lake and river basin environment changes. The following results were obtained. First, climate changes in historical periods had wide-ranging and far-reaching impacts on agricultural production, especially disasters caused by climate change. Among the changes in the Poyang Lake basin environment, including river network systems, lake water levels, etc., changes in lake water volume are direct evidence of climate change, adaptation to climate change, and obvious phased characteristics. Second, in the process of changes to the lake and river network in the Poyang Lake Basin, social and economic development is accompanied by evolution of the lake. Increases and decreases in population, the scale of agricultural production, and lake environment changes have direct and significant interactions. Third, the Poyang Lake basin’s environmental changes during the historical period are mainly reflected in the pressure feedback mode of “population–agriculture” in the lake environment.

Contributions of climate change and human activities to runoff variations in the Poyang Lake Basin of China

2021 ◽  
Vol 123 ◽  
pp. 103019
Author(s):  
Xiangyong Lei ◽  
Lu Gao ◽  
Jianhui Wei ◽  
Miaomiao Ma ◽  
Ligang Xu ◽  
...  
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Poyang Lake ◽  
Lake Basin ◽  
Poyang Lake Basin

scholarly journals Characteristics of Runoff Variations and Attribution Analysis in the Poyang Lake Basin over the Past 55 Years

2020 ◽  
Vol 12 (3) ◽  
pp. 944 ◽  
Author(s):  
Ruonan Wang ◽  
Wenqi Peng ◽  
Xiaobo Liu ◽  
Cuiling Jiang ◽  
Wenqiang Wu ◽  
...  
Keyword(s):  
Climate Change ◽  
Human Activities ◽  
Poyang Lake ◽  
Water Cycle ◽  
Temporal Variations ◽  
Trend Test ◽  
Lake Basin ◽  
Poyang Lake Basin ◽  
The Future ◽  
Measurement Period

Spatial and temporal variations in hydrological series are affected by both climate change and human activities. A scientific understanding of the impacts of these two main factors on runoff will help to understand the response mechanism of the water cycle in a changing environment. This study focused on Poyang Lake Basin, which contains China’s largest freshwater lake. Several approaches, including the Mann-Kendall trend test, cumulative anomaly method, Hurst exponent analysis, and slope change ratio of cumulative quantity (SCRCQ) method, were adopted to explore the characteristics of runoff variations and the respective impacts of climate change and human activities on runoff variations in the five subbasins. The results indicated that (1) from 1961 to 2015, the runoff throughout the basin fluctuated, and it decreased significantly in the 2000s. (2) Different baseline periods and measurement periods were identified for each subbasin to analyse the spatial and temporal responses of runoff to climate change and human activities. (3) The runoff of each subbasin will exhibit anti-persistent features with different persistence times in the future. (4) Compared with those in the baseline period, in the first measurement period, precipitation was the main factor driving the runoff increase in the Ganjiang, Fuhe, Xinjiang and Raohe subbasins, with contribution rates of 50.91–63.47%, and human activities played a supplementary role. However, in the second measurement period, as human activities intensified, they became the leading factor causing changes in runoff, with contribution rates between 59.57% and 92.49%. Considering water shortages and the intensification of human activities, the impacts of human activities on runoff variations will require more attention in the future.

scholarly journals Controls of Climate and Land-Use Change on Terrestrial Net Primary Productivity Variation in a Subtropical Humid Basin

2020 ◽  
Vol 12 (21) ◽  
pp. 3525
Author(s):  
Fu-hong Liu ◽  
Chong-Yu Xu ◽  
Xiao-xia Yang ◽  
Xu-chun Ye
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Land Use Change ◽  
Primary Productivity ◽  
Human Activities ◽  
Net Primary Productivity ◽  
Poyang Lake ◽  
Lake Basin ◽  
Total Production ◽  
Poyang Lake Basin

Knowledge of vegetation dynamics in relation to climatic changes and human activities is essential for addressing the terrestrial carbon cycle in the context of global warming. Scientific detection and quantitative attribution of vegetation dynamic changes in different climatic zones and human activities are the focus and challenge of the relevant research. Taking the Poyang Lake basin as the research area, this study aimed to reveal how climate and land use drive changes in net primary productivity (NPP) in the subtropical humid basin. Change patterns of vegetation NPP and their relationships with meteorological factors across the basin were first investigated based on the estimation of 18 year (2000–2017 year) NPP by using a typical light energy utilization model, the Carnegie-Ames-Stanford Approach (CASA) model. Quantitative analysis was then conducted to explicitly distinguish the driving effects of climate change and land-use change on NPP dynamics in two different periods. Results show that annual NPP and total production (TP) of the Poyang Lake basin increased significantly from 2000 to 2017. During this period, land-use change in the basin was driven by the process of urbanization expansion and the efforts of ecological protection. Climatically, the temperature is the major influencing climatic factor in determining vegetation productivity in the subtropical humid basin, followed by precipitation and solar radiation. In addition, our investigation also revealed that with comparison to the period of 2000s, the increased TP of the Poyang Lake basin due to climate change in 2010s was much bigger than the decreased TP due to land-use change. However, in the areas where the land-use change occurred, the decreased TP was mainly attributed to the impact of land-use change, even though climate change showed a positive effect of increasing productivity.

Effects of climate change on annual streamflow using climate elasticity in Poyang Lake Basin, China

2012 ◽  
Vol 112 (1-2) ◽  
pp. 169-183 ◽  
Author(s):  
Shanlei Sun ◽  
Haishan Chen ◽  
Weimin Ju ◽  
Jie Song ◽  
Hao Zhang ◽  
...  
Keyword(s):  
Climate Change ◽  
Poyang Lake ◽  
Lake Basin ◽  
Annual Streamflow ◽  
Climate Elasticity ◽  
Poyang Lake Basin

scholarly journals Quantifying Influences of Natural and Anthropogenic Factors on Vegetation Changes Based on Geodetector: A Case Study in the Poyang Lake Basin, China

2021 ◽  
Vol 13 (24) ◽  
pp. 5081
Author(s):  
Yiming Wang ◽  
Zengxin Zhang ◽  
Xi Chen
Keyword(s):  
Land Use ◽  
Human Activities ◽  
Vegetation Change ◽  
Poyang Lake ◽  
Anthropogenic Factors ◽  
Lake Basin ◽  
Vegetation Changes ◽  
Vegetation Growth ◽  
Poyang Lake Basin ◽  
Natural And Anthropogenic Factors

Understanding the driving mechanism of vegetation changes is essential for vegetation restoration and management. Vegetation coverage in the Poyang Lake basin (PYLB) has changed dramatically under the context of climate change and human activities in recent decades. It remains challenging to quantify the relative contribution of natural and anthropogenic factors to vegetation change due to their complicated interaction effects. In this study, we selected the Normalized Difference Vegetation Index (NDVI) as an indicator of vegetation growth and used trend analysis and the Mann-Kendall test to analyze its spatiotemporal change in the PYLB from 2000 to 2020. Then we applied the Geodetector model, a novel spatial analysis method, to quantify the effects of natural and anthropogenic factors on vegetation change. The results showed that most regions of the basin were experiencing vegetation restoration and the overall average NDVI value in the basin increased from 0.756 to 0.809 with an upward yearly trend of +0.0026. Land-use type exerted the greatest influence on vegetation change, followed by slope, elevation, and soil types. Except for conversions to construction land, most types of land use conversion induced an increase in NDVI in the basin. The influence of one factor on vegetation NDVI was always enhanced when interacting with another. The interaction effect of land use types and population density was the largest, which could explain 45.6% of the vegetation change, indicating that human activities dominated vegetation change in the PYLB. Moreover, we determined the ranges or types of factors most suitable for vegetation growth, which can be helpful for decision-makers to optimize the implementation of ecological projects in the PYLB in the future. The results of this study could improve the understanding of the driving mechanisms of vegetation change and provide a valuable reference for ecological restoration in subtropical humid regions.

On the Impact of Climate Change on Regional Tourism Activities

2014 ◽  
Vol 644-650 ◽  
pp. 5471-5474
Author(s):  
Jian Bo He ◽  
Zhen Wang
Keyword(s):  
Climate Change ◽  
Global Change ◽  
Poyang Lake ◽  
Present Situation ◽  
Lake Basin ◽  
Impact Of Climate Change ◽  
Regional Tourism ◽  
Poyang Lake Basin ◽  
Change Impact ◽  
The Impact

The climate change is an important part of global change which can change the present situation of regional and even global human and animal’s survival. This article is mainly discussing the impact of climate change of the Poyang Lake Basin on regional tourism. On the basis of finding the relevant data of the climate change impact on regional tourism at home and broad, it analyses the influences that the regional tourism destination and tourists and tourism places have, as well as puts forward corresponding countermeasures.

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