Fluorine emission from combustion of steam coal of North China Plate and Northwest China

2002 ◽  
Vol 47 (16) ◽  
pp. 1346 ◽  
Author(s):  
Kunli LUO
Keyword(s):  
North China ◽  
Northwest China ◽  
Fluorine Emission ◽  
North China Plate

The petrochemistry of the Lower Proterozoic metamorphic rocks from the Dabieshan-Lianyungang area, the southeastern margin of the North China Platform

1991 ◽  
Vol 55 (379) ◽  
pp. 263-276 ◽  
Author(s):  
Sang Longkang
Keyword(s):  
Continental Margin ◽  
North China ◽  
Active Continental Margin ◽  
The South ◽  
North China Platform ◽  
The North ◽  
Lower Proterozoic ◽  
Southeastern Margin ◽  
Tectonic Settings ◽  
North China Plate

AbstractBased on geological studies, 141 rock analyses and 5 trace element analyses of metabasites, the present paper deals with the rock association, chemical features, protolith formation and the original tectonic settings upwards through the Lower Proterozoic metamorphic strata in the Dabieshan-Lianyungang area, in the south-east of the North China Platform. The results of the study indicate that the lower and middle parts of the metamorphic strata comprise terrigenous clastics, phosphoritic and aluminous sedimentary formations which formed under stable continental margin conditions. In the middle-upper part a calc-alkaline volcano-sedimentary formation under the active continental margin was developed. The Lower Proterozoic meta-strata of sedimentary-volcanosedimentary origin from bottom upwards suggest that the tectonic evolution of the south-eastern margin of the North China Platform is a process from stabilization to mobilization. This process suggests a northward subduction of the Yangtze Plate under the North China Plate during the later part of the early Proterozoic.

scholarly journals Compound Droughts and Heat Waves in China

2019 ◽  
Vol 11 (12) ◽  
pp. 3270 ◽  
Author(s):  
Lei Ye ◽  
Ke Shi ◽  
Zhuohang Xin ◽  
Chao Wang ◽  
Chi Zhang
Keyword(s):  
Heat Wave ◽  
North China ◽  
Heat Waves ◽  
Northwest China ◽  
Central China ◽  
Spatio Temporal ◽  
The 1960S ◽  
Increasing Trends ◽  
Climate Events ◽  
The Impact

Droughts and heat waves both are natural extreme climate events occurring in most parts of the world. To understand the spatio-temporal characteristics of droughts and heat waves in China, we examine changes in droughts, heat waves, and the compound of both during 1961–2017 based on high resolution gridded monthly sc_PDSI and daily temperature data. Results show that North China and Northwest China are the two regions that experience the most frequent droughts, while Central China is the least drought-affected region. Significant drought decreasing trends were mostly observed Qinghai, Xinjiang, and Tibet provinces, while the belt region between Yunnan and Heilongjiang provinces experienced significant drought increasing trends. Heat waves occur more frequently than droughts, and the increase of heat wave occurrence is also more obvious. The increasing of heat wave occurrence since the 2000s has been unprecedented. The compound droughts and heat waves were mild from the 1960s to 1980s, and began to increase in 1990s. Furthermore, the significant increasing trends of the percentage of compound droughts and heat waves to droughts are observed in entire China, and more than 90% drought occurrences are accompanied by one or more heat waves in the 2010s. The results highlight the increased percentage of compound droughts and heat waves and call for improved efforts on assessing the impact of compound extremes, especially in an era of changing climate.

Characteristics of Devonian extensional magmatic activity in the Jiefangyingzi area, northern margin of the North China Plate

2019 ◽  
Vol 55 (2) ◽  
pp. 1262-1282
Author(s):  
Xing‐An Wang ◽  
Zheng‐Hong Liu ◽  
Shi‐Chao Li ◽  
Xiao‐Jun Jiang
Keyword(s):  
North China ◽  
Magmatic Activity ◽  
Northern Margin ◽  
The North ◽  
North China Plate

The bumblebees of Gansu, Northwest China (Hymenoptera, Apidae)

Zootaxa ◽  
2011 ◽  
Vol 2865 (1) ◽  
pp. 1 ◽  
Author(s):  
JIANDONG AN ◽  
PAUL H. WILLIAMS ◽  
BINGFENG ZHOU ◽  
ZHENGYING MIAO ◽  
WENZHONG QI
Keyword(s):  
North China ◽  
Northwest China ◽  
Gansu Province ◽  
Food Plants ◽  
Natural Ecosystems ◽  
Distribution Maps ◽  
Local Species Richness ◽  
Local Species ◽  
Species Richness And Abundance ◽  
First Time

Bumblebees are important pollinators for agricultural and natural ecosystems. Gansu province, China, is located in part of the greatest hotspot of bumblebee diversity worldwide, a region of very varied geomorphology and vegetation. We report on a recent field survey of the bumblebees of Gansu made between 2007–2010. A sample of 5941 bumblebee specimens from Gansu are assigned to 49 species. Two older specimens held in London add two more species to this list. Together, these 51 species belong to 10 subgenera of the genus Bombus, and 10 species (nearly one fifth of the fauna) are recorded for the first time from Gansu: B. asiaticus, B. bicoloratus, B. chinensis, B. coreanus, B. deuteronymus, B. expolitus, B. festivus, B. grahami, B. hypocrita, and B. opulentus. None of the species is endemic to Gansu. We provide distribution maps and describe variation in local species richness and abundance and list the food plants used in Gansu. The highest bumblebee richness for the province is in the southeastern mountains and Qinghai-Tibetan plateau in the southwest. We describe how the fauna of Gansu is transitional between the fauna of North China and the fauna of the more southern Sichuan-Himalayan region.

scholarly journals DROUGHT AND FAMINE IN NORTHWEST CHINA: A LATE VICTORIAN TRAGEDY?

2018 ◽  
Vol 2 (2) ◽  
pp. 373-391 ◽  
Author(s):  
Andrea Janku
Keyword(s):  
North China ◽  
Northwest China ◽  
Social Conditions ◽  
Qing Empire ◽  
Western Province ◽  
The North ◽  
Modern Chinese ◽  
History Of ◽  
Chinese Historiography ◽  
North Western

AbstractThe North China Famine of 1876–1879 has received some attention recently, but little of this work has focused on the north-western province of Shaanxi. This imbalance is reflected in the local histories that devote far more space to the documentation and commemoration of the Hui rebellion than to the famine. This paper argues that the drought of those years and the ensuing famine is historically much more significant than this biased documentation would suggest, and that the rebellion can only be fully understood by paying attention to the environmental and social conditions in which it unfolded. Further, the paper engages with Mike Davis’s argument that portrays the famine in China as part of a ‘late-Victorian holocaust.’ While persuasive, his focus on outside forces is problematic as it ignores the history of the Qing Empire as an expanding force in itself and inadvertently reinforces the victimization narrative that dominates modern Chinese historiography.

scholarly journals Inter-Regional Agricultural Virtual Water Flow in China Based on Volumetric and Impact-Oriented Multi-Regional Input-Output (MRIO) Approach

Water ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 251
Author(s):  
Yingying Ren ◽  
Kai Huang ◽  
Yajuan Yu ◽  
Jingru Hu
Keyword(s):  
Water Flow ◽  
North China ◽  
Water Footprint ◽  
Quantitative Description ◽  
Virtual Water ◽  
Water Shortage ◽  
Northwest China ◽  
Full Account ◽  
Virtual Water Flow ◽  
Net Export

Virtual water trading is an effective strategy to alleviate water shortage. Several different methods have been developed to achieve quantitative description and evaluation of virtual water, which can be broadly divided into volumetric and impact-oriented water footprint approaches. The former focuses on the consumption of water resources, while the latter puts greater emphasis on assessing the water use impacts. Based on the volumetric and impact-oriented water footprint, this paper conducted a comprehensive study on the virtual water flow of agricultural products among regions in China. The results show that different water footprint evaluation methods have different tendencies in evaluating virtual water flow. Volumetric virtual water mainly flows from northwest and northeast China to north and east China, while impact-oriented virtual water mainly flows from northwest and central south China to east and north China. Northwest China is the largest net export region of agricultural virtual water, and it is dominated by direct water consumption. In addition, we compared the net export volume of virtual water and the water shortage situation among regions in China. North China, where the water shortage is very serious, mainly relies on external water sources, while northwest China, which also faces a water shortage problem, exports a large amount of virtual water to external sources. The findings of this study highlight the importance of taking full account of the response measures in both cases when formulating policies. In other words, the virtual water strategy should consider water quantity and water quality simultaneously.

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