scholarly journals Ecological performance of local initiatives on water resources management in Timorese communities, Indonesia

2021 ◽  
Vol 914 (1) ◽  
pp. 012031
Author(s):  
G N Njurumana ◽  
E Pujiono ◽  
M M da Silva ◽  
O K Oematan

Abstract Indonesia is one of the countries under the threat of a water crisis. A total of 106 districts from 16 provinces, including East Nusa Tenggara, experienced drought and clean water crisis of 1.50 billion m3 year−1. This involves ecological characteristics accumulation of semiarid regions, degradation of forest resources, and increased critical land. Mitigation research on a watershed scale provides an understanding of the strong relationship between land degradation and water crisis. However, specific information on biophysical spring sources in semi-arid ecosystems is still very limited. This study aimed to obtain ecological performance based on rainfall, critical land, and land cover from a community-based water resource management model on the Timor island. This study was conducted through field observations at 63 units of water sources and structured interviews. The results showed that the characteristics vary from rainfall distribution, land cover, critical land, and utilization pressure. Furthermore, water source units have a limited carrying capacity of rainfall, the land conditions are generally critical, including the threat of land fires and community use of springs. Meanwhile, the variations of these characteristics determine the management interventions undertaken by the community. Therefore, through various management models of community-based water sources, local initiatives need to get support to preserve water sources for the people’s livelihood.

2021 ◽  
Vol 10 (7) ◽  
pp. 466
Author(s):  
Wenbo Mo ◽  
Yunlin Zhao ◽  
Nan Yang ◽  
Zhenggang Xu ◽  
Weiping Zhao ◽  
...  

Spatial and quantitative assessments of water yield services in watershed ecosystems are necessary for water resource management and improved water ecological protection. In this study, we used the InVEST model to estimate regional water yield in the Dongjiang Lake Basin in China. Moreover, we designed six scenarios to explore the impacts of climate and land use/land cover (LULC) changes on regional water yield and quantitatively determined the dominant mechanisms of water yield services. The results are expected to provide an important theoretical reference for future spatial planning and improvements of ecological service functions at the water source site. We found that (1) under the time series analysis, the water yield changes of the Dongjiang Lake Basin showed an initial decrease followed by an increase. Spatially, water yield also decreased from the lake area to the surrounding region. (2) Climate change exerted a more significant impact on water yield changes, contributing more than 98.26% to the water yield variability in the basin. In contrast, LULC had a much smaller influence, contributing only 1.74 %. (3) The spatial distribution pattern of water yield services in the watershed was more vulnerable to LULC changes. In particular, the expansion of built-up land is expected to increase the depth of regional water yield and alter its distribution, but it also increases the risk of waterlogging. Therefore, future development in the basin must consider the protection of ecological spaces and maintain the stability of the regional water yield function.


2019 ◽  
Vol 574 ◽  
pp. 383-397 ◽  
Author(s):  
Yaoliang Chen ◽  
Shusen Wang ◽  
Zhiguo Ren ◽  
Jingfeng Huang ◽  
Xiuzhen Wang ◽  
...  

Water Policy ◽  
2016 ◽  
Vol 18 (6) ◽  
pp. 1334-1352 ◽  
Author(s):  
Jyoti S. Jennewein ◽  
Kelly W. Jones

Operationalizing integrated water resource management (IWRM) often involves decentralization of water management via community-based management (CBM). While attention has been given to the components leading to successful CBM, less is known about what factors motivate people's willingness to participate (WTP) in such programs. This study analyzed factors that influence household WTP in CBM in a transboundary watershed located where El Salvador, Guatemala, and Honduras converge – the Trifinio Region. Several variables were hypothesized to influence WTP: sense of community (SOC), dependence on water resources, level of concern for water resources, and socio-economic characteristics. In 2014, quantitative and qualitative data were collected from 62 households in five communities. Most respondents reported high levels of WTP in future CBM initiatives, and multivariate regression analysis revealed that SOC was the most important predictor of WTP, with wealth and perceptions of watershed management also statistically significant. Qualitative analyses revealed water availability was more concerning than water quality, and perceptions of inequitable access to water is an important constraint to developing CBM strategies. Taken together, these results suggest that enhancing SOC and relationships between local and regional levels of governance prior to establishing community-based projects would facilitate more success in implementing IWRM.


2019 ◽  
Vol 11 (15) ◽  
pp. 1808 ◽  
Author(s):  
Zhou ◽  
Dong ◽  
Liu ◽  
Metternicht ◽  
Shen ◽  
...  

Unprecedented human-induced land cover changes happened in China after the Reform and Opening-up in 1978, matching with the era of Landsat satellite series. However, it is still unknown whether Landsat data can effectively support retrospective analysis of land cover changes in China over the past four decades. Here, for the first time, we conduct a systematic investigation on the availability of Landsat data in China, targeting its application for retrospective and continuous monitoring of land cover changes. The latter is significant to assess impact of land cover changes, and consequences of past land policy and management interventions. The total and valid observations (excluding clouds, cloud shadows, and terrain shadows) from Landsat 5/7/8 from 1984 to 2017 were quantified at pixel scale, based on the cloud computing platform Google Earth Engine (GEE). The results show higher intensity of Landsat observation in the northern part of China as compared to the southern part. The study provides an overall picture of Landsat observations suitable for satellite-based annual land cover monitoring over the entire country. We uncover that two sub-regions of China (i.e., Northeast China-Inner Mongolia-Northwest China, and North China Plain) have sufficient valid observations for retrospective analysis of land cover over 30 years (1987–2017) at an annual interval; whereas the Middle-Lower Yangtze Plain (MLYP) and Xinjiang (XJ) have sufficient observations for annual analyses for the periods 1989–2017 and 2004–2017, respectively. Retrospective analysis of land cover is possible only at a two-year time interval in South China (SC) for the years 1988–2017, Xinjiang (XJ) for the period 1992–2003, and the Tibetan Plateau (TP) during 2004–2017. For the latter geographic regions, land cover dynamics can be analyzed only at a three-year interval prior to 2004. Our retrospective analysis suggest that Landsat-based analysis of land cover dynamics at an annual interval for the whole country is not feasible; instead, national monitoring at two- or three-year intervals could be achievable. This study provides a preliminary assessment of data availability, targeting future continuous land cover monitoring in China; and the code is released to the public to facilitate similar data inventory in other regions of the world.


2019 ◽  
Vol 3 (s1) ◽  
pp. 96-96
Author(s):  
Karen D. Calhoun ◽  
Kent Key ◽  
E. Yvonne Lewis ◽  
Susan J Woolford ◽  
E. Hill DeLoney ◽  
...  

OBJECTIVES/SPECIFIC AIMS: o To review the community’s recommendations on how to rebuild trust in the Flint community. o To review effective community engagement strategies utilized with the Flint Special Projects for project conceptualization, participant recruitment, data analysis, project oversight, and dissemination. METHODS/STUDY POPULATION: The study population includes nearly two hundred residents representing seniors, youth and diverse ethnicities recruited to participate in eleven focus group meetings. The population also represents the general public who attended informational meetings in Flint, Michigan to learn about the crisis and allow residents to voice their opinions and concerns during the onset of the crisis. The project is a mixed methods community based participatory research effort that utilized community decision making in all phases of the effort such as pre-conception, implementation, dissemination and advocacy to encourage the community’s recommendations are adopted at policy and institutional responsiveness levels. It includes three community engaged research efforts: (project 1) A qualitative analysis of community sentiment provided during 17 recorded legislative, media and community events, and (projects 2-3) two mixed methods efforts utilizing purposive sampling of stakeholders whose voice may not have been heard. RESULTS/ANTICIPATED RESULTS: The project presents a qualitative analysis of the community’s voice during the onset of the man-made disaster when the community first became aware of the emergency manager’s plans to switch the water source. It also reflects current perspectives of community voice since the projects are scheduled to end late February 2019. Findings from a trust measure administered to nearly two hundred residents will be presented, along with a qualitative analysis of focus group findings among segments of the population (seniors, youth, and diverse ethnicities) who may have been left out of narratives on the water crisis. Finally, the project will compare empowerment and resiliency approaches being utilized in Flint, Michigan to recover from the disaster with other approaches grounded in literature and theory. DISCUSSION/SIGNIFICANCE OF IMPACT: Communities of color often experience social determinants of health which negatively impact their health, well-being and human rights. Some Flint citizens are experiencing negative health consequences (i.e., rashes, brain and behavioral sequelle, fertility, etc.) as a result of the disaster, and are uncertain of health outcomes in the future. This is the first project to rigorously document and analyze levels of trust and mistrust in the city of Flint since the water disaster occurred. The qualitative research will guide future clinical research that will benefit this traumatized community experiencing high levels of mistrust (i.e., government, elected officials, etc.). The community engaged methodology involved residents and study participants in all phases of the project including project oversight, validating and analyzing data, and dissemination. This methodology will contribute to existing literature and theory on community based participatory research, community engaged research, team science and citizen science. The approaches empowered a call to action among residents, for example, seniors who attended two senior focus group sessions shared “they are hopeful and have a purpose,” resulting in the creation of a council (with officers) at their housing complex to advocate for the well-being of seniors during the recovery process. Recruitment methodologies were extremely successful due to resident level trust in community leaders and community partner organizations. Finally, the project’s examination of approaches encouraging empowerment and resiliency will provide lessons learned for other communities challenged with crisis.


2019 ◽  
Vol 11 (23) ◽  
pp. 2856 ◽  
Author(s):  
Tao Du ◽  
Li Wang ◽  
Guofu Yuan ◽  
Xiaomin Sun ◽  
Shusen Wang

Accurate estimates of evapotranspiration (ET) in arid ecosystems are important for sustainable water resource management due to competing water demands between human and ecological environments. Several empirical remotely sensed ET models have been constructed and their potential for regional scale ET estimation in arid ecosystems has been demonstrated. Generally, these models were built using combined measured ET and corresponding remotely sensed and meteorological data from diverse sites. However, there are usually different vegetation types or mixed vegetation types in these sites, and little information is available on the estimation uncertainty of these models induced by combining different vegetation types from diverse sites. In this study, we employed the most popular one of these models and recalibrated it using datasets from two typical vegetation types (shrub Tamarix ramosissima and arbor Populus euphratica) in arid ecosystems of northwestern China. The recalibration was performed in the following two ways: using combined datasets from the two vegetation types, and using a single dataset from specific vegetation type. By comparing the performance of the two methods in ET estimation for Tamarix ramosissima and Populus euphratica, we investigated and compared the accuracy of ET estimation at the site scale and the difference in annual ET estimation at the regional scale. The results showed that the estimation accuracy of daily, monthly, and yearly ET was improved by distinguishing the vegetation types. The method based on the combined vegetation types had a great influence on the estimation accuracy of annual ET, which overestimated annual ET about 9.19% for Tamarix ramosissima and underestimated annual ET about 11.50% for Populus euphratica. Furthermore, substantial difference in annual ET estimation at regional scale was found between the two methods. The higher the vegetation coverage, the greater the difference in annual ET. Our results provide valuable information on evaluating the estimation accuracy of regional scale ET using empirical remotely sensed ET models for arid ecosystems.


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