scholarly journals SOIL NITROGEN REGIME AND THE RELATIONSHIP BETWEEN ABOVEGROUND GREEN PHYTOBIOMASS AND SOIL NITROGEN FRACTIONS AT DIFFERENT STOCKING RATES IN THE XILIN RIVER BASIN, INNER MONGOLIA

2004 ◽  
Vol 28 (3) ◽  
pp. 285-294 ◽  
Author(s):  
GAO Ying-Zhi ◽  
WANG Shi-Ping ◽  
HAN Xing-Guo ◽  
CHEN Quan-Sheng ◽  
WANG Yan-Fen ◽  
...  
Keyword(s):  
River Basin ◽  
Soil Nitrogen ◽  
Inner Mongolia ◽  
Nitrogen Fractions ◽  
Stocking Rates ◽  
The Relationship

How do herders do well? Profitability potential of livestock grazing in Inner Mongolia, China, across ecosystem types

2018 ◽  
Vol 40 (1) ◽  
pp. 77 ◽  
Author(s):  
Ping Li ◽  
Joleen C. Hadrich ◽  
Brian E. Robinson ◽  
Yulu Hou ◽  
Yating Dai ◽  
...  
Keyword(s):  
Opportunity Cost ◽  
Inner Mongolia ◽  
Household Survey ◽  
Livestock Grazing ◽  
Weather Shocks ◽  
Household Survey Data ◽  
Stocking Rates ◽  
The Relationship ◽  
Over Time ◽  
Enterprise Budgets

Livestock production has increased in Inner Mongolia, China, despite widespread documentation of grassland degradation. To begin investigating the relationship that produces these trends, we studied farm-level decisions of herder households. We estimated economic enterprise budgets for 15 counties in Inner Mongolia across five ecosystems in 2009 and 2014 by using household survey data. Six counties decreased livestock stocking rates and had improved profit over time. The remaining counties increased their stocking rates over the period studied and profit decreased for all but one county. Livestock operators who reported negative profit over the 5 years were located across ecosystem types and reported a large number of weather shocks that affected grassland availability. Removing the opportunity cost of land and labour from the economic enterprise budgets resulted in a positive profit for all counties, which may explain why herders continue to increase stocking rates with decreased grassland availability over time.

scholarly journals Drought evolution characteristics and precipitation intensity changes during alternating dry-wet changes in the Huang-Huai-Hai River basin

2013 ◽  
Vol 10 (3) ◽  
pp. 2665-2696 ◽  
Author(s):  
D. H. Yan ◽  
D. Wu ◽  
R. Huang ◽  
L. N. Wang ◽  
G. Y. Yang
Keyword(s):  
River Basin ◽  
Inner Mongolia ◽  
Precipitation Intensity ◽  
Occurrence Frequency ◽  
Drought Frequency ◽  
Piedmont Plain ◽  
Daily Precipitation Data ◽  
Huai River ◽  
Increasing Trend ◽  
Frequency Changes

Abstract. According to the Chinese climate divisions and the Huang-Huai-Hai River basin digital elevation map, the basin is divided into seven sub-regions by means of cluster analysis of the basin meteorological stations using the self-organizing map (SOM) neural network method. Based on the daily precipitation data of 171 stations for the years 1961–2011, the drought frequency changes with different magnitudes are analyzed and the number of consecutive days without precipitation is used to identify the drought magnitudes. The first precipitation intensity after a drought period is analyzed with the Pearson-III frequency curve, then the relationship between rainfall intensity and different drought magnitudes is observed, as are the drought frequency changes for different years. The results of the study indicated the following: (1) the occurrence frequency of different drought level shows an overall increasing trend; there is no clear interdecadal change shown, but the spatial difference is significant. The occurrence frequencies of severe and extraordinary drought are higher on the North China Plain, Hetao Plains in Ningxia-Inner Mongolia, as well as on the Inner Mongolia and the Loess Plateaus, and in the Fen-Wei Valley basin. (2) As the drought level increases, the probability of extraordinary rainstorm becomes lower, and the frequency of occurrence of spatial changes in different precipitation intensities vary. In the areas surrounding Bo Sea, the Shandong Peninsula and the Huai River downstream, as the drought level increases, the occurrence frequency of different precipitation intensities first shows a decreasing trend, which becomes an increasing trend when extraordinary drought occurs. In the middle and upper reaches of the Huai River basin, on the Hai River basin piedmont plain and Hetao Plains in Ningxia-Inner Mongolia, Inner Mongolia and Loess Plateaus, and in the Fen-Wei Valley basin, the probability of the different precipitation intensities shows an overall decreasing trend. The mountains with high attitude and Tibetan Plateau are located at high altitudes where the variation of different precipitation intensities with the increase in drought level is relatively complex. (3) As the drought frequency increases, areas I, II and V which are located on the coastal and in the river basin are vulnerable to extreme precipitation processes; areas III, IV, VI and VII are located in the inland area where heavier precipitation is not likely to occur.

LUKIANETS O.I., GREBІN V.V. TIME DYNAMICS OF WATER BALANCE COMPONENTS IN THE PSEL RIVER BASIN

2021 ◽  
pp. 28-36
Author(s):  
O.I. Lukіanets ◽  
V.V Grebіn
Keyword(s):  
Water Balance ◽  
River Basin ◽  
Water Flow ◽  
Water Bodies ◽  
Water Runoff ◽  
Water Balance Components ◽  
Total Evaporation ◽  
Modern Period ◽  
The Relationship ◽  
The Town

In the article, in order to identify the generalized role of changes that occurred in the Psel River basin with such climatic indicators as air temperature, amount of precipitation, their form of precipitation, the structure of water bodies feeding, as well as water flow in the modern period, the average water balance for a long-term period was calculated the Psel river basin near the town of Gadyach. In general, the water balance equation shows the ratio of water input and consumption within a river basin, taking into account changes in its reserves over a selected time interval and allows one to assess the relationship of its individual components. In the article identifies changes in the ratio between the inflow (amount of precipitation) and consumption of water (total evaporation and runoff) for two periods – the climatic norm of 1961-1990 and modern 1990-2019. Analysis of the temporal dynamics of the water balance components of the Psel river basin showed that the values of the water balance components within the Psel river basin near the town of Gadyach in the modern period have decreased in comparison with the period of the climatic norm – the amount of precipitation by 6,2%, water flow by 17,5%, evapotranspiration by 1,8%. But, analyzing the relationship between the inflow and outflow of water in the basin for the two study periods 1961-1990 and 1990-2019, it can be stated that during the period of the climatic norm, the percentage of water flow from the total precipitation was greater (coefficient water flow 16.2%) than in the modern period (coefficient water flow 14.2%). With regard to total evaporation in water-balance ratios, its share in the water-balance ratio has increased over the modern period (1990-2019). If during the period of climatic normal (1961-1990) the aridity coefficient was 83.8%, then in the modern period, it is 85.8%. That is, the “redistribution” of the water volumes of atmospheric precipitation took place towards the total evaporation with a decrease in the volume of water used to form the water runoff. For the basin of the river Psel – the city of Gadyach in the modern period on the average ≈ 11 mm (or ≈ 130000000 m3) evaporate instead of replenishment of water resources. In the previous period of 1961-1990, on the contrary, ≈ 12 mm (or 136000000 m3) did not evaporate, but flowed into the water bodies of the basin.

The influence of climate, topography, parent material and vegetation on soil nitrogen fractions

CATENA ◽  
2019 ◽  
Vol 175 ◽  
pp. 329-338 ◽  
Author(s):  
Qinmei Zhong ◽  
Shirong Zhang ◽  
Honglin Chen ◽  
Ting Li ◽  
Chuer Zhang ◽  
...  
Keyword(s):  
Soil Nitrogen ◽  
Parent Material ◽  
Nitrogen Fractions

scholarly journals Dietary Quality is Associated with Reduced Risk of Diabetes among adults in Northern China: A Cross-sectional Study

2020 ◽  
pp. 1-28
Author(s):  
Siyue Tan ◽  
Haiwen Lu ◽  
Ruier Song ◽  
Jing Wu ◽  
Mingming Xue ◽  
...  
Keyword(s):  
Dietary Patterns ◽  
Inner Mongolia ◽  
Dairy Products ◽  
Diabetes Risk ◽  
Dietary Guidelines ◽  
High Salt ◽  
Diabetes Prevalence ◽  
Dietary Quality ◽  
Cross Sectional ◽  
The Relationship

Abstract In this study, we analysed the prevalence of diabetes in Inner Mongolia and explored the relationship between dietary patterns and diabetes using the Chinese Dietary Balance Index-16 (DBI-16). This study was a surveillance survey of Chronic Disease and Nutrition Monitoring among Chinese Adults in Inner Mongolia in 2015. Dietary data were collected using the 24-h dietary recall and weighing method over 3 consecutive days. Dietary quality was evaluated via the DBI-16. A generalized linear model was used to examine the associations between the DBI-16 and dietary patterns. The relationship between dietary patterns and diabetes was analysed using logistic regression. In Inner Mongolia, the diabetes prevalence was 8.5%, and the estimated standardized prevalence was 6.0%. Four major dietary patterns were identified: ‘meat/dairy products’, ‘traditional northern’, ‘high cereal/tuber’ and ‘high-salt/alcohol’. Generalized linear models showed that the ‘meat/dairy products’ pattern was relatively balanced (βLBS = −1.993, βHBS = −0.206, βDQD = −2.199; all P<0.05) and was associated with a lower diabetes risk (odds ratio [OR]: 0.565; 95% confidence interval [CI]: 0.338–0.945; P<0.05) after adjusting for potential confounders. The other three dietary patterns (i.e., ‘traditional northern’, ‘high cereal/tuber’ and ‘high-salt/alcohol’) exhibited relatively unbalanced dietary quality and were unassociated with diabetes risk. Diabetes prevalence in Inner Mongolia was moderate. The dietary quality of the ‘meat/dairy products’ pattern was relatively balanced and was correlated with a decreased risk of diabetes prevalence, suggesting that dietary quality may help decrease the diabetes prevalence and provide a suggestion for local dietary guidelines.

Seasonal relations between animal gain, pasture production and stocking rate on two tropical grass-legume pastures

1978 ◽  
Vol 29 (1) ◽  
pp. 103 ◽  
Author(s):  
LA Edye ◽  
WT Williams ◽  
WH Winter
Keyword(s):  
Response Surfaces ◽  
Stocking Rate ◽  
Wet Season ◽  
Pasture Production ◽  
Annual Basis ◽  
Seasonal Basis ◽  
Guinea Grass ◽  
Dry Seasons ◽  
Stocking Rates ◽  
The Relationship

The relationship between stocking rate and liveweight change per animal was examined over a period of 3 years for two continuously grazed pastures, one of Brachiaria and the other consisting of guinea grass with Endeavour stylo and Siratro. On an annual basis there was no significant effect of stocking rate over the last 2 years, but on a seasonal basis there were highly significant effects in all seasons. In the dry seasons, animal gain rose as the stocking rate fell, but in the last two wet seasons gains fell with the lower stocking rates. On an annual basis the two effects cancelled out. Response surfaces for gain versus pasture yield and stocking rate were curvilinear (quadratic) during the wet season and linear during the dry. Optimum stocking rates (for maximum gain per hectare) were determined for the wet and dry seasons; the rate was greatly affected by the yield of green material during the dry season but less so during the wet. The possible causes of this reversed wetseason effect are discussed.

scholarly journals A Study on the Relationship between Land Use Change and Water Quality of the Mitidja Watershed in Algeria Based on GIS and RS

2020 ◽  
Vol 12 (9) ◽  
pp. 3510 ◽  
Author(s):  
Dechao Chen ◽  
Acef Elhadj ◽  
Hualian Xu ◽  
Xinliang Xu ◽  
Zhi Qiao
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Land Use Change ◽  
River Basin ◽  
Agricultural Land ◽  
Vegetation Coverage ◽  
Water Quality Control ◽  
Urban Settlement ◽  
The Relationship

Many catchments in northern Algeria, including the coastal Mitidja Basin in the north central part of the country have been negatively affected by the deterioration of water quality in recent years. This study aims to discover the relationship between land use change and its impact on water quality in the coastal Mitidja river basin. Based on the data of land use and water quality in 2000, 2010 and 2017, the relationship between land use change and surface water quality index in the Mitidja Watershed was discussed through GIS and statistical analysis. The results show that the physical and chemical properties of the Mitidja river basin have obvious spatial heterogeneity. The water quality of upstream was better than that of downstream. There was a significant spatial relationship between the eight water quality indicators and three land use types, including urban residential land, agricultural land and vegetation. In most cases, settlements and agricultural land are the dominant factors leading to river pollution, and higher vegetation coverage helps to improve water quality. The regression model revealed that percentage of urban settlement area was a predictor for NH4-N, BOD5, COD, SS, PO4-P, DO and pH, while vegetation was a predictor for NO3-N. The analysis also showed that during this period, urban settlement areas increased sharply, which has a significant impact on water quality variables. Agricultural land only had a significant positive correlation with PO4-P. The results provide an effective way to evaluate river water quality, control water pollution and land use management by landscape pattern.

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