Cytology and pollen grain fertility in populations of Astragalus adsurgens Pall. indigenous to Yunwu Mountain in the Loess Plateau, north-west China

Euphytica ◽  
1994 ◽  
Vol 72 (3) ◽  
pp. 225-230 ◽  
Author(s):  
F. Kita ◽  
A. Hongo ◽  
H. Zou ◽  
J. Cheng ◽  
Z. Zhao
Keyword(s):  
Loess Plateau ◽  
Pollen Grain ◽  
The Loess Plateau ◽  
West China ◽  
North West ◽  
Astragalus Adsurgens

Long-term vegetation restoration promotes the stability of the soil micro-food web in the Loess Plateau in North-west China

CATENA ◽  
2021 ◽  
Vol 202 ◽  
pp. 105293
Author(s):  
Yang Wu ◽  
WenJing Chen ◽  
Wulan Entemake ◽  
Jie Wang ◽  
HongFei Liu ◽  
...  
Keyword(s):  
Food Web ◽  
Loess Plateau ◽  
Vegetation Restoration ◽  
The Loess Plateau ◽  
West China ◽  
North West ◽  
The Stability

Traffic and tillage effects on runoff and soil loss on the Loess Plateau of northern China

Soil Research ◽  
2008 ◽  
Vol 46 (8) ◽  
pp. 667 ◽  
Author(s):  
Xiaoyan Wang ◽  
Huanwen Gao ◽  
J. N. Tullberg ◽  
Hongwen Li ◽  
Nikolaus Kuhn ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Loess Plateau ◽  
Water Conservation ◽  
Conservation Tillage ◽  
Soil Disturbance ◽  
Rainfall Simulation ◽  
Control Treatment ◽  
The Loess Plateau ◽  
Antecedent Soil Moisture ◽  
North West

This paper reports the outcome of 5 years of field plot runoff monitoring, 2 years of water erosion measurement, and a rainfall simulation experiment on moderately sloping farmland on the loess plateau of north-west China. The objective was to test different conservation tillage systems compared with the control treatment, conventional mouldboard plough practice (CK). Tillage, residue cover, and compaction effects were assessed in terms of runoff and soil erosion. Results from the runoff plots showed that conservation tillage, with more residue cover, less compaction, and less soil disturbance, could substantially reduce runoff and soil erosion compared with the control. No tillage with residue cover and no compaction produced the least runoff and soil erosion. Compared with the control, it reduced runoff and soil erosion by about 40% and 80%, respectively. At the start of the experiment, residue cover appeared to be the most important factor affecting soil and water conservation, particularly when antecedent soil moisture was limited. With the accumulation of tractor wheeling effects over the course of the experiment, soil compaction appeared to become a more important factor affecting runoff. Rainfall simulation was then used to assess the effect of non-inverting surface tillage and different levels of residue cover and wheel compaction on infiltration and runoff. This confirmed that wheel compaction effects could be greater than those of tillage and residue cover, at least under the 82.5 mm/h rainfall rate produced by the simulator. The wheeling effect was particularly large when the treatment was applied to wet soil, and severe even after wheeling by small tractors.

scholarly journals Using forage litter to improve soil degradation of pure Betula platyphylla forest in the Loess Plateau, China

2013 ◽  
Vol 59 (1) ◽  
pp. 5-12
Author(s):  
Luc Nhu Trung ◽  
Zengwen Liu ◽  
Xiaoxi Zhang ◽  
Yuanhao Bing ◽  
Bochao Zhu
Keyword(s):  
Loess Plateau ◽  
Chemical Properties ◽  
Betula Platyphylla ◽  
The Loess Plateau ◽  
Vicia Villosa ◽  
Effective Prevention ◽  
Melilotus Officinalis ◽  
Coronilla Varia ◽  
Astragalus Adsurgens

Abstract The long-term growth of pure forest is an important issue that affects stability and sustainable development of ecosystem, while using forage litter as fertilizer or directly establishing tree-grass complex vegetation may be the most effective prevention way. This study took the artificial pure forests of Betula platyphylla, which were widely distributed in the Loess Plateau of China, as the object and conducted a 120-day decomposition incubation experiment of forest humus soil mixed with seven common leguminous forage litters to study the effects of forage litters in controlling the degradation of soil biological and chemical properties of pure forests. The results showed that: by adding forage litter to the soil of pure B. platyphylla forest, litters of Lespedeza bicolor and Onobrychis viciaefolia improved the soil quality obviously, followed by Astragalus adsurgens and Melilotus officinalis, while Medicago sativa lead to obvious deterioration, followed by Vicia villosa and Coronilla varia.

TBE in China

2020 ◽  
Keyword(s):  
Western China ◽  
Ixodes Persulcatus ◽  
West China ◽  
North West ◽  
Haemaphysalis Concinna ◽  
Viral Subtype ◽  
Japanese Military ◽  
Natural Foci ◽  
Far Eastern ◽  
The Brain

The first TBE patients in China were reported in 1943, and the TBEV was isolated from the brain tissues of 2 patients in 1944 by Japanese military scientists,1 and from patients and ticks (Ixodes persulcatus and Haemaphysalis concinna) in 1952 by Chinese researchers.2 The Far Eastern viral subtype (TBEV-FE) is the endemic subtype that has been isolated from all 3 known natural foci (northeastern China, western China, and southwestern China).14 Recently a new “Himalayan subtype” of the TBEV (TBEV-HIM) was isolated from wild rodent Marmoata himalayana in the Qinghai-Tibet Plateau15. The main vector of the TBEV in China is I. persulcatus.3 One recent report suggests that the TBEV-SIB is prevalent in the Uygur region (North West China)13 but epidemiological modelling indicates that the TBEV may occur even widely all over China (Figure 3).4 Likely, the disease is often missed by clinicians due to a lack of the availability of specific diagnostic assays16.

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