Your search found 4 records
1 Partap, T.; Sthapit, B. (Eds.) 1998. Managing agrobiodiversity: Farmers' changing perspectives and institutional responses in the HKH Region. Kathmandu, Nepal: ICIMOD. 439p.
Natural resources ; Sustainability ; Environment ; Ecosystems ; Mountains ; Agricultural development ; Horticulture ; Farming systems ; Livestock ; Pastoralism ; Gender ; Women ; Crop production ; Erosion ; Rice ; Soyabeans ; Pest control / Nepal / India / China / Pakistan / Hindu Kush Region / Himalayan Region / Xinjiang / Hengduan Mountains / Hainan Island / Tiahang Mountains / Qinghai-Tibetan Plateau / Sichuan / Sikkim / Garhwal / Himachal Pradesh / Lahul Valley
(Location: IWMI-HQ Call no: 574.5 G726 PAR Record No: H024457)
2 Yan, Y.; Zhuang, Q.; Zan, C.; Ren, J.; Yang, L.; Wen, Y.; Zeng, S.; Zhang, Q.; Kong, L. 2021. Using the Google Earth Engine to rapidly monitor impacts of geohazards on ecological quality in highly susceptible areas. Ecological Indicators, 132:108258. [doi: https://doi.org/10.1016/j.ecolind.2021.108258]
Geological hazards ; Monitoring ; Remote sensing ; Landsat ; Satellite imagery ; Spatial distribution ; Ecological factors ; Landslides ; Vegetation ; Land use / China / Sichuan / Danba
(Location: IWMI HQ Call no: e-copy only Record No: H050775)
https://www.sciencedirect.com/science/article/pii/S1470160X21009237/pdfft?md5=fc8cae18da106987a406a9feff5a7d79&pid=1-s2.0-S1470160X21009237-main.pdf
https://vlibrary.iwmi.org/pdf/H050775.pdf
https://vlibrary.iwmi.org/pdf/H050775.pdf
(9.62 MB) (9.62 MB)
Frequent geohazards have knock-on effects on ecological quality. Timely and dynamically monitoring the damage of geohazards to ecological quality is important to the geological hazards prevention, ecological restoration, and policy formulation. Existing studies mainly focused on the impacts of climate change, urbanization, and extreme weather on the ecological quality, largely ignoring the role of frequent geohazards in the highly susceptible area. At present, the impact mechanism of the high susceptibility of geohazards on ecological quality remains unknown. To fill this knowledge gap, we use the Remote Sensing Ecological Index (RSEI, a widely accepted ecological quality index) calculated on the Google Earth Engine (GEE) platform, geohazard density data, and the Landsat series of surface reflectance datasets to explore the mechanism that drives spatial–temporal variations of ecological quality. Taking the Danba County as the study area, our results indicate that the total number of geohazards is 944 during 1995–2019, and the number of geohazards fluctuates and rises every year (10 in 1995 and 82 in 2019). A conceptual framework was proposed to quantify the impact of the high susceptibility of geohazards on ecological quality by separately exploring its impact on the 4 ecological components of RSEI (i.e., greenness, wetness, dryness, and heat). We found that the density of geohazards is significantly negatively correlated with greenness (R = 0.48, Pearson Correlation Coefficient (PCC) = -0.528, p < 0.01), and humidity (R = 0.45, PCC = -0.364, p < 0.01), whereas it is significantly positively correlated with dryness (R = 0.63, PCC = -0.335, p < 0.01) and heat (R = 0.47, PCC = -0.368, p < 0.01). Therefore, geohazards make a negative contribution to ecological quality by reducing greenness and humidity and increasing dryness and heat. This study provides insights on the mechanism of geohazards on ecological quality, benefiting stakeholders in designing better management plans for sustainable ecosystem cycling, application of GEE, and geological remote sensing.
3 Zhang, J.; Zhu, J.; Liu, Y.; Lu, N.; Fang, W. 2022. The economic impact of payments for water-related ecosystem services on protected areas: a synthetic control analysis. Water Resources Management, 36(5):1535-1551. [doi: https://doi.org/10.1007/s11269-022-03099-z]
Payment for Ecosystem Services ; Water resources ; Economic impact ; Economic development ; Economic growth ; Gross national product ; Policies ; Towns ; Case studies / China / Shaanxi / Hubei / Henan / Gansu / Sichuan / Hanzhong / Ankang / Shangluo / Danjiangkou Reservoir
(Location: IWMI HQ Call no: e-copy only Record No: H051072)
(3.30 MB)
Payments for Water-Related Ecosystem Services (PWES) are increasingly popular for promoting water ecological conservation, and their impact on development is of considerable interest. This study estimates the economic impact of PWES on protected areas using the synthetic control method. Taking the Middle Route of the South to North Water Diversion Project in China as a case study, we find that the per capita GDP in protected areas increased markedly relative to synthetic control regions, and PWES had a positive economic impact. Additionally, we conducted many placebo tests to verify the validity and robustness of the results. We believe that the main factor responsible for the positive effect lies in developing the ecological-economic industrial system. This study provides a baseline for synthetic control analysis of PWES to compare regions of interest with their counterfactuals. The case study findings provide reference for the economic development of protected areas.
4 Sijing, X.; Gang, L.; Biao, M. 2023. Vulnerability analysis of land ecosystem considering ecological cost and value: a complex network approach. Ecological Indicators, 147:109941. [doi: https://doi.org/10.1016/j.ecolind.2023.109941]
Land transfers ; Ecosystems ; Networks ; Vulnerability ; Economic development ; Land use change ; Vulnerability ; Land resources ; Resilience ; Dry lands ; Landscape ; Urbanization ; Ecological factors ; Environmental factors / China / Sichuan / Pidu / Chengdu
(Location: IWMI HQ Call no: e-copy only Record No: H051715)
https://www.sciencedirect.com/science/article/pii/S1470160X23000833/pdfft?md5=1cad77de32fb5b46ba9ca7a7848df845&pid=1-s2.0-S1470160X23000833-main.pdf
https://vlibrary.iwmi.org/pdf/H051715.pdf
https://vlibrary.iwmi.org/pdf/H051715.pdf
(3.23 MB) (3.23 MB)
The urban–rural fringe is the most sensitive area in the process of urban expansion and rural revitalization. It is important to study the complex coupling relationship between economic development and ecological protection in the urban–rural fringe from a holistic and dynamic perspective. The complex network theory is utilized in this study to analyze how land use change (LUC) affects ecosystems' structural and functional vulnerabilities. From the perspective of network modeling and analysis, the network eco-efficiency indicator for the vulnerability analysis of the land transfer network is defined considering the ecological cost and value in this study. Based on this, we propose a method for analyzing the vulnerability of the functioning of land ecosystem. In order to testify the effectiveness of the method, this study takes the southeastern corner of the Pidu District of Chengdu as the research object. The result shows: (1) Under the combined effect of urban expansion and rural revitalization, the utilization of land resources in the region is relatively poor, the development of urbanization is slow, and the rural ecological environment has not been improved; (2) The ecological land is the transfer-out type, the artificial land is the transfer-in type. Grassland is the primary key land type that is essential to the network's connectivity but also the most at risk to attack. Although the stability of the land ecosystem is not great, it is generally progressing in a stable direction; (3) To maintain the resilience of the land ecosystem and alleviate the vulnerability, at least 85% of the dryland and 45% of the urban residential land need to be protected; (4) A 20% increase of dryland and paddy is positive to enhancing the resilience of the ecosystem and reducing the negative impact on the ecosystem in the process of land use transition. The research results can provide a reference for the coordinated development of “land-economy-ecology” in the urban–rural fringe.
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