scholarly journals Temporal–Spatial Distribution of Ecosystem Health and Its Response to Human Interference Based on Different Terrain Gradients: A Case Study in Gannan, China

2020 ◽  
Vol 12 (5) ◽  
pp. 1773 ◽  
Author(s):  
Yu Shi ◽  
Rui Han ◽  
Luo Guo
Keyword(s):  
Ecosystem Health ◽  
Negative Impact ◽  
Jiangxi Province ◽  
Spatial Correlations ◽  
Rapid Urbanization ◽  
Human Interference ◽  
The Status ◽  
Urbanization In China ◽  
Impact Of Urbanization ◽  
The Impact

The exploitation, utilization, and protection of land resources are some of the great social problems during the process of rapid urbanization in China. The status of land use directly affects ecosystem health (ESH). The evaluation of ESH and the spatial correlations between urbanization caused by human interference help us to analyze the influence of urbanization on ecosystems and also provide new insight into reasonable and scientific resource management. In this study, we evaluated the ESH of Gannan, in Jiangxi Province, China, based on ecosystem service values (ESV) and selected a series of indicators to detect the impact of urbanization on ecosystem health in 1990, 1995, 2000, 2005, 2010. and 2015. Remote sensing (RS) and the Geographic Information System (GIS) were used as processing tools to calculate basic data and to map the results based on different terrain gradients. The results show that ecosystem health suffered a downward trend from 1990 to 2015. Especially, the area proportion at an unhealthy level and average health (ave-health) level increased prominently, and the area of a well state decreased. Further, the results indicate that urbanization had a negative impact on ESH. The degree of a negative correlation increases with the process of urban sprawl. In addition, we found that from 1990 to 2015, the area proportion of a degraded level and unhealthy level was the highest on the first terrain gradient, and as the terrain gradient increased, this area proportion also decreased. However, the high interference region occupies a higher proportion in the lower terrain gradient. Consequently, the results could reveal the impact of urbanization on ecosystem health and could provide an even more effective service for a sustainable development.

scholarly journals Impact of Urbanization on Ecosystem Health: A Case Study in Zhuhai, China

2019 ◽  
Vol 16 (23) ◽  
pp. 4717 ◽  
Author(s):  
Cui ◽  
Feng ◽  
Han ◽  
Guo
Keyword(s):  
Negative Correlation ◽  
Ecosystem Health ◽  
Environmental Planning ◽  
Urban Ecosystems ◽  
Spatial Correlations ◽  
Rapid Urbanization ◽  
Health Level ◽  
Healthy State ◽  
Impact Of Urbanization ◽  
The Impact

The past decades have witnessed rapid urbanization around the world. This is particularly evident in Zhuhai City, given its status as one of the earliest special economic zones in China. After experiencing rapid urbanization for decades, the level of ecosystem health (ESH) in Zhuhai City has become a focus of attention. Assessments of urban ESH and spatial correlations between urbanization and ESH not only reveal the states of urban ecosystems and the extent to which urbanization affected these ecosystems, but also provide new insights into sustainable eco-environmental planning and resource management. In this study, we assessed the ESH of Zhuhai City using a selected set of natural, social and economic indicators. The data used include Landsat Thematic Mapper images and socio-economic data of 1999, 2005, 2009 and 2013. The results showed that the overall ESH value and ecosystem service function have been on the decline while Zhuhai City has continued to become more urbanized. The total ESH health level trended downward and the area ratio of weak and relatively weak health level increased significantly, while the areas of well and relatively well healthy state decreased since 1999. The spatial correlation analysis shows a distinct negative correlation between urbanization and ESH. The degree of negative correlation shows an upward trend with the processes of urban sprawl. The analysis results reveal the impact of urbanization on urban ESH and provide useful information for planners and environment managers to take measures to improve the health conditions of urban ecosystems.

scholarly journals The Impact of Urbanization on Ecosystem Health in Typical Karst Areas: A Case Study of Liupanshui City, China

2020 ◽  
Vol 18 (1) ◽  
pp. 93
Author(s):  
Yangling Zhao ◽  
Rui Han ◽  
Nan Cui ◽  
Jingbiao Yang ◽  
Luo Guo
Keyword(s):  
Ecosystem Health ◽  
Raw Materials ◽  
Management Policy ◽  
Karst Area ◽  
Karst Region ◽  
Rocky Desertification ◽  
Rapid Urbanization ◽  
Karst Areas ◽  
Impact Of Urbanization ◽  
The Impact

The karst region of Southwest China is one of the largest continuous karst areas in the world, and the ecosystem in the karst region is extremely fragile. The city of Liupanshui, a typical karst area in southwestern China, has provided the main energy and raw materials during China’s rapid urbanization in the past few decades. With the continuous deterioration of the environment in Liupanshui and from the viewpoint of sustainable development strategies, research on ecosystem health (ESH) and the assessments of correlations between urbanization and ESH plays an important role in regional sustainable eco-environmental development. Therefore, the impact of urbanization on the ecosystem health of the study area was discussed in this study using a series of remote sensing images and socio-economic data from 1990 to 2015. Studies showed that Liupanshui is undergoing rapid urbanization, and the growth of urbanized land reached a peak between 2010 and 2015. From 1990 to 2015, the level of ESH in Liupanshui trended downward and then increased. During 2000 to 2010, due to the policy of returning farmland to grassland and forestland, the substantial increase in woodland and grassland and the management policy of mining areas have caused a turn in ESH. Although the value of ecosystem health in 2010–2015 increased, the process of urbanization is rapid, so we should pay more attention to the trend in future ecosystem health changes. The findings revealed that urbanization significantly negatively affects the ecosystem health of Liupanshui, and mining has the greatest impact. Therefore, in future urban development, strengthening the management of resource extraction and the supervision of environmental protection, continuing to return farmland to grassland and forestry, and controlling rocky desertification can improve the health of the urban ecosystem in the study area.

scholarly journals Impact of Fast Urbanization on Ecosystem Health in Mountainous Regions of Southwest China

2020 ◽  
Vol 17 (3) ◽  
pp. 826
Author(s):  
Yi Xiao ◽  
Luo Guo ◽  
Weiguo Sang
Keyword(s):  
Ecosystem Services ◽  
Ecosystem Health ◽  
Negative Impact ◽  
Guizhou Province ◽  
Dominant Factor ◽  
Land Use Patterns ◽  
Mountainous Regions ◽  
Significant Negative Impact ◽  
Impact Of Urbanization ◽  
The Impact

Accelerated urbanization has changed land use patterns, leading to the deterioration of ecosystems. Assessments of ecosystem health (ESH) during the urbanization process are used to determine the reasons and mechanism for this, and to uncover negative factors. In this study, we assessed the ESH of Qiannan prefecture, in Guizhou Province, China, based on the ecosystem services value. We selected a series of indicators, including natural, social, and economic aspects, to detect the impact of urbanization on ecosystem services in 1990, 1995, 2000, 2005, 2010, and 2015. The results show that ESH in Qiannan declined from 1990 to 2015, especially in the eastern and northern regions. Further, the results indicate that urbanization had a negative impact on ESH, of which the dominant factor was the proportion of construction land from 1990 to 2005. After 2005, moreover, the dominant factor was the gross domestic product. The impact of urbanization on EHS had spatial differences, however. The most significant negative impact was found in the east and north. After 2010, the western and central regions of Qiannan showed an urbanization trend in favor of ecosystem health. We recommend ecological restoration in regions with weak and relatively weak ESH levels to achieve sustainable development.

scholarly journals The impact of urbanization expansion on agricultural land in Ethiopia: A review

2020 ◽  
Vol 8 (4) ◽  
pp. 73-80
Author(s):  
Assefa Ayele ◽  
Kassa Tarekegn
Keyword(s):  
Urban Areas ◽  
Agricultural Land ◽  
Urban Expansion ◽  
Rural Livelihoods ◽  
Vital Role ◽  
Rapid Urbanization ◽  
Economic Resource ◽  
House Construction ◽  
Impact Of Urbanization ◽  
The Impact

AbstractIn a country like Ethiopia where the vast majority of the populations are employed in agriculture, land is an important economic resource for the development of rural livelihoods. Agricultural land in peri-urban areas is, however, transformed into built-up regions through horizontal urban expansion that has an effect on land use value. In recent years Ethiopia has been experiencing rapid urbanization, which has led to an ever-increasing demand for land in peri-urban areas for housing and other nonagricultural activities that pervades agricultural land. There is a high demand for informal and illegal peri-urban land which has been held by peri-urban farmers, and this plays a vital role in the unauthorized and sub-standard house construction on agricultural land. This urbanization has not been extensively reviewed and documented. In this review an attempt has been made to assess the impacts of rapid urbanization on agricultural activities. Urban expansion has reduced the areas available for agriculture, which has seriously impacted upon peri-urban farmers that are often left with little or no land to cultivate and which has increased their vulnerability. Housing encroachments have been observed to be uncontrolled due to a weak government response to the trend of unplanned city expansion. This has left peri-urban farmers exposed to the negative shocks of urbanization because significant urbanization-related agricultural land loss has a positive correlation with grain production decrease. Appropriate governing bodies should control urban development in order to control the illegal and informal spread of urbanization on agricultural land that threatens food production.

The Dying Water Heritage of Sarkhej Roza

2019 ◽  
Vol 4 (2) ◽  
pp. 141-159
Author(s):  
Gargi Mishra ◽  
Prasenjit Shukla ◽  
Mona Iyer
Keyword(s):  
Fifteenth Century ◽  
Disposal Site ◽  
Archaeological Survey ◽  
Rapid Urbanization ◽  
The Past ◽  
National Importance ◽  
Heritage Site ◽  
Late Twentieth ◽  
Impact Of Urbanization ◽  
The Impact

Sarkhej Roza, a fifteenth century complex comprising of the mausoleum, mosque and cascade of natural and man-made lakes, and located in peri-urban Ahmedabad, Gujarat, India, is presently a heritage site of national importance under the Archaeological Survey of India (ASI). Originally, the Sarkhej lake was excavated to serve the religious purpose of ablution, recreation and climate conditioning that were quite functional until the late twentieth century before rapid urbanization in the catchment of its adjacent interconnected feeder Makarba lake took place. Unfettered development in the past two decades has encroached the common catchment of Makarba–Sarkhej lake cascade by almost 50 per cent. The then perennial sacred Sarkhej lake is now a drying sewage disposal site. Sarkhej Roza has received considerable attention for conserving built heritage aesthetically in the past. Since it is the duty of all stakeholders including ASI, Ahmedabad Municipal Corporation, Sarkhej Roza Committee, civil society and communities to work in harmony towards sustaining their natural heritage, this research has undertaken detailed site and stakeholder assessment to understand challenges faced by the lake and its precincts, and derived learnings from the stakeholder’s perspectives on the impact of urbanization on this water heritage. This was done in order to chart out the possibilities of reviving the Markarba–Sarkhej lake cascade before it is too late.

scholarly journals The impact of urbanization and financial development on electricity intensity in China: Evidence from panel VAR approach

2020 ◽  
Vol 194 ◽  
pp. 03010
Author(s):  
Ruijun Duan
Keyword(s):  
Financial Development ◽  
Negative Impact ◽  
Panel Var ◽  
Policy Makers ◽  
Vector Autoregressive ◽  
Development Policies ◽  
Impact Of Urbanization ◽  
Positive Shock ◽  
The Impact ◽  
Electricity Intensity

This paper aims at exploring the impact of urbanization and financial development on electricity intensity in China during the period 2004-2018. By employing a panel vector autoregressive (VAR) approach, the study finds that the electricity intensity response to one standard deviation shock on urbanization shows a negative impact, and a positive shock to financial development initially increases electricity intensity and eventually decreases electricity intensity. Our analysis is important for policy makers for improving electricity efficiency planning and sustainable economic development policies.

The impact of agricultural pollutants in six drinking water reservoirs

1999 ◽  
Vol 40 (2) ◽  
pp. 11-17 ◽  
Author(s):  
A. Tanik ◽  
B. Beler Baykal ◽  
I. E. Gonenc
Keyword(s):  
Land Use ◽  
Negative Impact ◽  
Point Sources ◽  
Environmental Evaluation ◽  
Diffuse Sources ◽  
Catchment Areas ◽  
The Status ◽  
Agricultural Pollutants ◽  
A Minor ◽  
The Impact

Water is supplied in the Greater Istanbul Metropolitan Area from the surface water of six main reservoirs. The present land use in the catchment areas of the reservoirs indicates that the area devoted to agricultural activities and to forests and meadows varies between 73 and 97% and that only a minor percentage, 1-26%, is devoted to settlements and industries. In contrast to the land use profile, the current environmental evaluation of the catchment areas reveals that point sources dominate over diffuse sources. However, this trend is expected to be reversed in the near future, making diffuse sources and control of fertilizers and pesticides the most significant issue. Pollutant loads regarding pesticides and fertilizers are calculated from unit loads based on area. These pollutants are observed to have a negative impact on water quality in terms of eutrophication and toxicity. In this paper, the status of fertilizers and pesticides are addressed and some protective measures for reducing the impact of agricultural pollutants in the reservoirs are recommended.

THE IMPACT OF URBANIZATION ON MURDER RATES AND ON THE GEOGRAPHY OF HOMICIDE IN ENGLAND AND WALES, 1780–1850

2010 ◽  
Vol 53 (3) ◽  
pp. 671-698 ◽  
Author(s):  
PETER KING
Keyword(s):  
Rural Areas ◽  
Rapid Urbanization ◽  
Homicide Rates ◽  
England And Wales ◽  
Large Cities ◽  
Methodological Problems ◽  
Urban And Rural Areas ◽  
And Migration ◽  
Impact Of Urbanization ◽  
The Impact

ABSTRACTAlthough higher murder rates have traditionally been associated with large cities, this view has recently been challenged by several historians who have argued that ‘homicide rates were negatively correlated with urbanisation and industrialisation’, and this is rapidly becoming the new consensus. By exploring the geography of homicide rates for one area undergoing rapid urbanization and industrialization – England and Wales, 1780–1850 – this article challenges this new view and re-assesses the relationship between recorded homicide rates and both modernization and urbanization. After discussing the methodological problems involved in using homicide statistics, it focuses mainly on the first fifteen years for which detailed county-based data is available – 1834–48 – as well as looking at the more limited late eighteenth-century and early nineteenth-century evidence. This data raises fundamental questions about the links historians have recently made between urbanization and low homicide rates, since the remote rural parts of England and Wales generally had very low recorded murder rates while industrializing and rapidly urbanizing areas such as Lancashire had very high ones. Potential explanations for these systematic and large variations between urban and rural areas – including the impact of age structures and migration patterns – are then explored.

scholarly journals Changes in Hypertension-Related Knowledge and Behavior and Their Associations with Socioeconomic Status among Recently Urbanized Residents in China: 2013–2016

2018 ◽  
Vol 15 (8) ◽  
pp. 1701 ◽  
Author(s):  
Wenjie Zhang ◽  
Hongdao Meng ◽  
Shujuan Yang ◽  
Honglin Luo ◽  
Danping Liu
Keyword(s):  
Higher Education ◽  
Socioeconomic Status ◽  
Health Knowledge ◽  
Negative Influence ◽  
Cross Sectional ◽  
Rapid Urbanization ◽  
Urbanization In China ◽  
And Behavior ◽  
The Unemployed ◽  
The Impact

The rapid urbanization in China has brought with it some health benefits, but it also brought about a negative influence on the lifestyle of residents. We conducted this study to assess the change in hypertension-related knowledge and behavior from 2013 to 2016 among recently urbanized residents and determine their association with socioeconomic status (SES). This research used data from two cross-sectional studies conducted in Hezuo community in Chengdu, Sichuan province of China. A total of 2268 and 2601 individuals, respectively, participated and completed standard questionnaires. According to the results, the median (IQR) scores of health knowledge was 1 (0,3) and 3 (1,5), respectively, (p < 0.001) and the median (IQR) scores of health behavior was 6 (5,6) and 5 (5,6), respectively, (p < 0.001) in 2013 and 2016. The rate of sufficient knowledge increased from 8.8% to 18.1% (p < 0.001), while the rate of correct behavior decreased from 54.5% to 45.5% (p < 0.001) in three years. Logistic regression analysis showed that higher education was associated with sufficient hypertension-related knowledge (p < 0.05), and those with higher education, unemployment, and retirement were more likely to have sufficient behavior (p < 0.05). The impact of SES on knowledge was stable between 2013 and 2016. The behavior difference between the middle school educated and the illiterate increased from 2013 to 2016 (p < 0.05), and the behavior difference between the unemployed and manual workers decreased from 2013 to 2016 (p < 0.05). Our results revealed that hypertension-related knowledge improved with no corresponding improvement in self-reported behavior among recently urbanized residents from 2013 to 2016. Organizational strategy should be implemented to improve health education on knowledge, and what is more, translate knowledge into behavior. All these measures should be given more attention to the lower educated and manual workers among recently urbanized residents to eliminate the SES disparity.

scholarly journals The Influence of Human Interference on Zooplankton and Fungal Diversity in Poyang Lake Watershed in China

Diversity ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 296
Author(s):  
Haiming Qin ◽  
Xinyi Cao ◽  
Lanyue Cui ◽  
Qian Lv ◽  
Tingtao Chen
Keyword(s):  
Water Quality ◽  
Human Health ◽  
Fungal Diversity ◽  
Management Practices ◽  
High Throughput Sequencing ◽  
Poyang Lake ◽  
Jiangxi Province ◽  
Human Interference ◽  
The Impact ◽  
Beneficial Fungi

The Poyang water system in Jiangxi Province, China, is important for floodwater storage, diversity maintenance, and the economy of the Poyang Lake watershed. In recent years, pollution has destroyed the ecosystem and impacted human health and the related economy. The water quality of the Poyang Lake watershed and the impact of human interference must be assessed. Conventional analysis and high-throughput sequencing were used to evaluate the structure of both zooplankton and fungi in six sub-lakes of the Poyang Lake watershed under different anthropogenic influences. The sub-lakes included were Dahuchi Lake (in natural preserve, DHC), Shahu Lake (in natural reserve, SH), Nanhu Lake (out of natural preserve, NH), Zhelinhu Lake (artificial reservoir, ZLH), Sixiahu Lake (agricultural lake artificially isolated from Poyang Lake, SXH), and Qianhu Lake (urban lake, QH). The densities and biomass of the zooplankton in DHC, SH, NH were higher compared with those in SXH, ZLH and QH (p < 0.05). Zooplankton distribution of SXH was the most strongly associated with total nitrogen (TN), total phosphorus (TP) and chlorophyll a (Chl a), while QH was highly associated with pH, conductivity (Cond), and water temperature (WT). For fungal diversity, a large number of beneficial fungi, Basidiomycota (phylum level) and Massarina (genus level) were obtained from DHC (55.3% and 27.5%, respectively), SH (54.4% and 28.9%, respectively), and NH (48.6% and 1.4%, respectively), while a large number of pathogenic Chytridiomycota (at phylum level) were identified from SXH (21.0%), ZLH (5.5%), and QH (7.5%). Manmade pollutants have impacted the natural hydrology and water quality and promoted variation between the zooplankton and fungi in the six sub-lakes, reducing the relative abundance of beneficial fungi and increasing the number of pathogens in the environment, which threatens human health and economic production. Understanding the diversity among the zooplankton and fungi in the six sub-lakes of the Poyang Lake watershed may help guide future water management practices.

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