Length-weight relationships of 5 Gobioninae species from the Yellow River basin and Huaihe River basin in Henan Province, China

2018 ◽  
Vol 34 (6) ◽  
pp. 1320-1323
Author(s):  
Fang Zhang ◽  
Hui H. Wu ◽  
Chang X. Yang ◽  
Chen L. Li ◽  
Yi F. Wang ◽  
...  
Keyword(s):  
River Basin ◽  
Yellow River ◽  
Yellow River Basin ◽  
Henan Province ◽  
The Yellow River ◽  
Huaihe River Basin ◽  
Huaihe River ◽  
The Yellow River Basin

scholarly journals Dryness/wetness variations in China during the first 50 years of the 21st century

2009 ◽  
Vol 6 (2) ◽  
pp. 1385-1409 ◽  
Author(s):  
J. Q. Zhai ◽  
B. Liu ◽  
H. Hartmann ◽  
B. D. Su ◽  
T. Jiang ◽  
...  
Keyword(s):  
River Basin ◽  
Yellow River ◽  
Yellow River Basin ◽  
Haihe River Basin ◽  
Huaihe River Basin ◽  
Huaihe River ◽  
Haihe River ◽  
The Yellow River Basin ◽  
The Huaihe River ◽  
The Haihe River Basin

Abstract. This study investigates future changes of dryness/wetness in China during the first 50 years of the 21st century according to the Standardized Precipitation Index (SPI), which is calculated by monthly precipitation data of ECHAM5/MPI-OM. Three anthropogenic greenhouse gas emission scenarios SRES-A2, SRES-A1B and SRES-B1 have been considered. The frequency of dry/wet periods in ten river basins is counted and the trend is analyzed and detected by a linear regression model and the Mann-Kendall non-parametric test. The results reveal that there is a trend towards drier conditions from Northeast to Southwest China in scenario A2 and a similar spatial distribution pattern in scenario A1B and B1. Areas with a high frequency of drought are detected under three scenarios. In the next half century, the Haihe River basin is expected to show a significant trend towards drier conditions, which pass the 95% confidence level in scenario A2. In the Yellow River basin, the Huaihe River basin, the Yangtze River basin and the Pearl River basin an obvious trend towards wetter conditions has been detected in scenario A1B. The Songhuajiang River basin, the Haihe River basin, the Yellow River basin and the Huaihe River basin show a trend towards wetter conditions, which passed the 90% confidence level in scenario B1. In addition, a decadal variation of dryness/wetness is projected for all the river basins.

scholarly journals Nitrogen Fertilization Effects on Physiology of the Cotton Boll–Leaf System

Agronomy ◽  
2019 ◽  
Vol 9 (6) ◽  
pp. 271
Author(s):  
Jing Chen ◽  
Liantao Liu ◽  
Zhanbiao Wang ◽  
Hongchun Sun ◽  
Yongjiang Zhang ◽  
...  
Keyword(s):  
River Basin ◽  
Nitrogen Fertilization ◽  
Yellow River ◽  
Yellow River Basin ◽  
Growth And Yield ◽  
The Yellow River ◽  
Nitrogen Rate ◽  
The Yellow River Basin ◽  
Source Sink ◽  
Subtending Leaves

The objective of this study was to assess the impacts of nitrogen on the physiological characteristics of the source–sink system of upper fruiting branches under various amounts of nitrogen fertilization. A two-year field experiment was conducted with a Bt cotton cultivar in the Yellow River Basin of China. The growth and yield of cotton of the upper fruiting branches were compared under four nitrogen levels: Control (N0, 0 kg ha−1), low nitrogen (N1, 120 kg ha−1), moderate nitrogen (N2, 240 kg ha−1), and high nitrogen (N3, 480 kg ha−1). The results indicated that in the subtending leaves in upper fruiting branches, chlorophyll content, protein content, and peroxidase (POD) activity dramatically increased with nitrogen application, reaching the highest under the moderate nitrogen treatment. The physiological characters in the seeds had the same trends as in the subtending leaves. Furthermore, the moderate nitrogen rate (240 kg ha−1) had a favorable yield and quality. Our results supported that a moderate nitrogen rate (240 kg ha−1) could coordinate the source–sink growth of cotton in the late stage, enhance the yield and fiber quality, and decrease the cost of fertilizer in the Yellow River Basin of China and other similar ecological areas.

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