The coupling mechanism between the suitable space and rural settlements considering the effect of mountain hazards in the upper Minjiang River basin

2020 ◽  
Vol 17 (11) ◽  
pp. 2774-2783
Author(s):  
Ying Liu ◽  
Wei Deng ◽  
Li Peng
Keyword(s):  
River Basin ◽  
Coupling Mechanism ◽  
Rural Settlements ◽  
Minjiang River ◽  
Suitable Space ◽  
Mountain Hazards

scholarly journals The Influence of Eco-water Retrieved by Quantitative Remote Sensing on Runoff in Upper Minjiang River Basin

2016 ◽  
Vol 20 (3) ◽  
pp. 1 ◽  
Author(s):  
Jin Huang ◽  
Wunian Yang ◽  
Wunian Yang ◽  
Xin Yang ◽  
Xin Yang ◽  
...  
Keyword(s):  
Remote Sensing ◽  
River Basin ◽  
Water Conservation ◽  
Quantitative Research ◽  
Flood Control ◽  
Water Layer ◽  
Climate Data ◽  
Minjiang River ◽  
Quantitative Remote Sensing ◽  
Del Rio

Remote sensing quantitative retrieval of ecological water (eco-water) has been foundational in systemic and quantitative research for water resources. Eco-water resource levels indicate conservation ability for the eco-water layer and influence of this on precipitation transformation and runoff regulation. The remote sensing quantitative inversion retrieved the MEC (Modulus of eco-water Conservation) of the Upper Minjiang River Basin study area in 1994 and 2001, and combined with climate data between 1990 and 2005, the influence of conservation water on the eco-water layer on runoff was then analyzed. Results revealed significant efficacy for flood control and water supply during the drought from the hydrologic cycle of ecowater. Thus protection and restoration of the eco-water layer for flood and drought prevention are crucial.  Influencia del agua ecológica en la escorrentía de la cuenca alta del río Minjiang medida a través de teledetección cuantitativa ResumenEl sondeo remoto del agua ecológica (del inglés Eco-water, agua conservada en la superficie terrestre) es indispensable en la investigación sistemática y cuantitativa de las fuentes de agua. Los niveles de suministros de agua ecológica indican la capacidad de conservación de la capa de agua ecológica y la influencia de esta en la transformación de precipitación y la regulación de escorrentía. La inversión cuantitativa por sondeo remoto estableció el Módulo de Conservación de Agua Ecológica (MEC, del inglés Modulus of Eco-Water Conservation) para el área de estudio en la cuenca alta del río Minjiang entre 1994 y 2001, y combinada con la información climática de entre 1990 y 2005, se analizó la influencia de conservacion de agua en la capa ecoacuática. Los resultados mostraron una gran eficacia en el control de inundaciones y en el suministro de agua durante la sequía a lo largo del ciclo hidrológico. Por esta razón, la protección y restauración de la capa de agua ecológica para la prevención de inundaciones y sequía es necesaria.

Sensitivity evaluation of soil erosion based on land use types: A case study of Minjiang River Basin

2020 ◽  
Vol 38 (5) ◽  
pp. 5697-5705
Author(s):  
Jinxin Zhang ◽  
Hui Li ◽  
Xiufang Zhang ◽  
Hua Yu ◽  
Fengna Liang ◽  
...  
Keyword(s):  
Land Use ◽  
Soil Erosion ◽  
River Basin ◽  
Minjiang River ◽  
Sensitivity Evaluation ◽  
Land Use Types

scholarly journals Spatial Distribution Characteristics and Optimum Layout of Urban and Rural Areas in Different Geomorphological Types

2020 ◽  
Vol 24 (3) ◽  
pp. 267-275
Author(s):  
Jing Li ◽  
Zhongyuan Cai ◽  
Lianru Duan
Keyword(s):  
Spatial Distribution ◽  
River Basin ◽  
Rural Areas ◽  
Distribution Characteristics ◽  
Rural Settlements ◽  
Spatial Distribution Characteristics ◽  
Jinghe River Basin ◽  
Urban And Rural Areas ◽  
Jinghe River ◽  
Channel Type

Taking Jinghe River Basin in the Loess geomorphological area and Guangnan County in the karst geomorphological area as the study area, the spatial distribution characteristics of urban and rural areas of different geomorphological types are analyzed. By using GIS and related statistical analysis software, this paper summarizes three basic urban and rural types: river channel type, plateau surface type, and loess terrace horizon prototype in the Loess Landscape Jinghe River Basin. It is known that most towns in the loess plateau gully area are in the Jinghe River Basin. According to the spatial distribution characteristics of urban and rural areas, the optimal layout based on the main structure of five districts, nine River corridors, and four plates is proposed. Using the DEM module of ArcGIS to divide the elevation and gradient of Guangnan County, we know that the density of urban and rural settlements in Guangnan County is low and the spatial distribution is dispersed, and the distribution of urban and rural settlements shows a strong elevation orientation. The distribution of urban and rural settlements has a normal distribution relationship with the elevation. The largest number of urban and rural settlements is between 2.1° and 25°. According to the present situation of settlement distribution, this paper puts forward some optimization strategies, such as appropriate settlement scale, settlement space development monitoring, and so on.

Impacts of future climate change (2030-2059) on debris flow hazard: A case study in the Upper Minjiang River basin, China

2018 ◽  
Vol 15 (8) ◽  
pp. 1836-1850 ◽  
Author(s):  
Ming Li ◽  
Cong-shan Tian ◽  
Yu-kuan Wang ◽  
Qin Liu ◽  
Ya-feng Lu ◽  
...  
Keyword(s):  
Climate Change ◽  
Debris Flow ◽  
River Basin ◽  
Future Climate ◽  
Future Climate Change ◽  
Minjiang River ◽  
Debris Flow Hazard

scholarly journals Succession of the Gut Microbiome in the Tibetan Population of Minjiang River Basin

2020 ◽  
Author(s):  
Jun Li ◽  
Lin Sun ◽  
Chunfeng Mo ◽  
Xiangsheng Fu ◽  
Baijun Chen ◽  
...  
Keyword(s):  
Microbial Community ◽  
High Altitude ◽  
River Basin ◽  
Gut Microbiome ◽  
Tibet Plateau ◽  
Gut Microflora ◽  
Microbial Composition ◽  
Tibetan Population ◽  
Minjiang River ◽  
Gut Microbial Community

Abstract Background: Tibetans are one of the oldest ethnic groups in China and South Asia. Tibetan has a unique lifestyle and a long history, which leads to the particularity of their gut microflora in composition and function. Different from the Tibetan population on the Qinghai-Tibet Plateau, Tibetans in Minjiang River Basin have gradually increased their migration to Chengdu Plain in recent years. Based on the analysis of 1059 Tibetans in the Minjiang River Basin at an altitude of 500-4001m, we found that the dominant phylum of Tibetan population is Bacteroidea and Firmicum, and the main genera are Prevotella and Bacteroides. These findings reflect the characteristics of Tibetan population. Results: In order to further study the factors affecting gut microbial composition of Tibetan population, 115 total parameters of 7 categories were evaluated. The results showed that altitude was the most important factor affecting the variation of microbial community in Tibetan population, and the change of altitude promoted the succession of gut microbial community. In the process of migration from high altitude to plain, the intestinal microbial composition of late immigrants was similar to that of plateau aborigines, while that of early immigrants was similar to that of plain aborigines. Migration to Tibet is related to the loss of indigenous gut microbial community species. In addition, from low altitude to high altitude, the similarity of microbial community with high altitude population increased with the reproduction of offspring after marriage. And the change of these flora will affect the metabolism, disease and cell function of Tibetan population. The other two sets (AGP and Z208) of altitude data also show the impact of altitude on the microbial community. Conclusions: This is the first large-scale study on the influencing factors of gut microflora in Tibetan population. Our study confirmed that altitude change is the most important factor affecting the distribution of Tibetan population flora, and provided abundant and unique data to explore the interaction of impact parameter-gut microbiome-host function and disease.

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