scholarly journals Effect of Slope, Rainfall Intensity and Mulch on Erosion and Infiltration under Simulated Rain on Purple Soil of South-Western Sichuan Province, China

Water ◽  
2016 ◽  
Vol 8 (11) ◽  
pp. 528 ◽  
Author(s):  
Muhammad Khan ◽  
Yuanbo Gong ◽  
Tingxing Hu ◽  
Rattan Lal ◽  
Jiangkun Zheng ◽  
...  
Keyword(s):  
Rainfall Intensity ◽  
Sichuan Province ◽  
Purple Soil ◽  
Western Sichuan ◽  
Simulated Rain

Effects of thinning on fine root biomass and carbon storage of subalpine Picea asperata plantation in Western Sichuan Province, China

2013 ◽  
Vol 36 (7) ◽  
pp. 645-654 ◽  
Author(s):  
Yun-Ke LIU ◽  
Chuan FAN ◽  
Xian-Wei LI ◽  
Yin-Hua LING ◽  
Yi-Gui ZHOU ◽  
...  
Keyword(s):  
Carbon Storage ◽  
Root Biomass ◽  
Fine Root ◽  
Fine Root Biomass ◽  
Sichuan Province ◽  
Western Sichuan ◽  
Picea Asperata

Ore Genesis and Deposit Model of Carbonatite-host REE Deposits: the Mianning-Dechang REE Belt, Western Sichuan Province, China

2014 ◽  
Vol 88 (s2) ◽  
pp. 475-477 ◽  
Author(s):  
Yuling XIE ◽  
Yingxu LI ◽  
Zengqian HOU ◽  
David R COOKE ◽  
Leonid DANYUSHEVSKY ◽  
...  
Keyword(s):  
Sichuan Province ◽  
Ore Genesis ◽  
Western Sichuan ◽  
Deposit Model

Thalictrum kangdingense (Ranunculaceae), a new synonym of T. megalostigma from China

Phytotaxa ◽  
2021 ◽  
Vol 498 (2) ◽  
pp. 87-103
Author(s):  
YOU-PAI ZENG ◽  
QIONG YUAN ◽  
QIN-ER YANG
Keyword(s):  
Morphological Characters ◽  
Sichuan Province ◽  
Type Locality ◽  
Type Material ◽  
Herbarium Specimens ◽  
Western Sichuan ◽  
New Synonym ◽  
Morphological Distinction ◽  
In The Wild

Based on critical observations on herbarium specimens (including type material) and living plants in the wild from its type locality, we demonstrate that Thalictrum kangdingense, recently described from Kangding county in western Sichuan province, China, is readily distinguishable from T. xinningense by an array of morphological characters but is actually conspecific with T. megalostigma, a species with its type locality also in Kangding. We therefore reduce T. kangdingense to the synonymy of T. megalostigma herein. The morphological distinction between T. baicalense and T. megalostigma is also clarified.

Naturally rainfall-induced changes in runoff-associated nitrogen and phosphorus losses in purple soil area: roles of land disturbance and plot length

2021 ◽  
Author(s):  
Ke Liang ◽  
Binghui He
Keyword(s):  
Rainfall Intensity ◽  
Purple Soil ◽  
Rainfall Events ◽  
Dissolved Phosphorus ◽  
Land Disturbance ◽  
P Concentration ◽  
Long Duration ◽  
Artificial Disturbance ◽  
Runoff Rate ◽  
Sloping Land

<p>Severe soil erosion occurs in southwestern China owing to the large expanses of human disturbance and sloping land. This field monitoring study was conducted during the rainy season to record the rainfall events, runoff, sediment yield, nitrogen, and phosphorous loss in 20-, 40-, and 60-m plots under conditions of artificial disturbance or natural restoration on a 15° slope in the purple soil area of southwestern China. The concentrations and loss amounts of total nitrogen (TN), total dissolved nitrogen (TDN), ammonium-nitrogen (NH4-N) and nitrate-nitrogen (NO<sub>3</sub>-N), total phosphorus (TP), total dissolved phosphorus (TDP) and orthophosphate (PO<sub>4</sub>-P) were comparatively determined. The highest N concentration was observed in long duration and soft rainfall events across all plots. The highest P concentration in artificial disturbed plots was found in long duration and intensive rainfall events while it was recordeds for measured variables were dominantly recorded under the long duration and lowest soft rainfall events in naturally restored plots intensity., while The the highest loss amounts for N and P in different forms for these variablesalmostmostly appeared under high rainfall intensity. Land disturbances differed orthophosphate PO<sub>4</sub>-P concentration in 20--m plot and and loss amounts of of measured variables N and P with different forms across in all plots. Plot lengths differed total dissolved phosphorus TDP concentration in natural restored plot and loss amounts of total dissolved nitrogenTDN and orthophosphate PO<sub>4</sub>-P in artificially disturbed plots. Naturally restoration reduced loss amounts of total nitrogen and total phosphorus by 69.4%62.14-79.05% and 79.28-83.43% TN, 68.8% TDN, 71.2% NH<sub>4</sub>-N, 74.3% NO<sub>3</sub>-N, 81.5% TP, 71.9% TDP and 70.0% PO<sub>4</sub>-P loss amounts comparedrelative to artificial disturbance, respectively. There were significant interrelationships among N and P concentrations in different forms in two land disturbance plots, while nitrate-NO<sub>3</sub>-nitrogenN concentration hadwas significantly negatively negative correlatedion with rainfall intensity and runoff rate in artificialally disturbanceed plots. Rainfall intensity was logarithmically correlated with TN, NO<sub>3</sub>-N concentrations in artificially disturbed plots and with NO<sub>3</sub>-N concentration in naturally restored plots. Runoff rate was logarithmically correlated with TN, TDN and NO<sub>3</sub>-N concentrations in artificially disturbed plots. Our results highlight the effects of land disturbance and plot length on nutrient losses in sloping land.</p>

Self-government and 1911 in China: Revolution or Continuity in the Political Participation in Sichuan Province?

2012 ◽  
Vol 17 (01) ◽  
pp. 165-189
Author(s):  
Monica de Togni
Keyword(s):  
Central Government ◽  
Active Role ◽  
Local Communities ◽  
Sichuan Province ◽  
The Political ◽  
Local Policy ◽  
Role Taking ◽  
Local Society ◽  
Western Sichuan ◽  
The Creation

The process that led to the creation of self-government organs, and their activities in the first years of their existence, shows a consistent continuity between the imperial and the republican institutions, but also some changes in the institutional behaviour of the representatives of the local communities before and after the 1911’s revolution. The different meaning attributed to the institutional reforms as they appear to have been interpreted by the Qing Court, from the interpretations by the local society - a tools to control the political activism of the local notables vs a means to play a more active role in the local policy -, did not interfere with the creation of the organs of self-government, a part of the new structure to be built for the constitutional monarchy scheduled through imperial edicts on 27th August, 1908. The local activism and activities, as they are illustrated for Sichuan province through provincial and county archive documents, local gazetteers and reviews, show contradictory tendencies even as relates to some officials, and part of local communities anticipating sometimes the dispositions by the central government for the implementations of self-government, and some resistance by the people who had the right to vote in the participation to the preparatory process for the poll. However, the flourishing of self-government councils of the lower level and the fields of their interventions as representatives of the local communities show a very positive attitude on part of the local communities that continued until Yuan Shikai closed them down in 1914. This study will be concentrating on this aspect and will include, among other things, the case-study of Xuanhan county in north-western Sichuan, where a powerful local lineage played a very relevant role, taking advantage of the disruption of the provincial institutional order.

Black carbon record of the wildfire history of western Sichuan Province in China over the last 12.8 ka

2016 ◽  
Vol 10 (4) ◽  
pp. 634-643 ◽  
Author(s):  
Weiwei Sun ◽  
Enlou Zhang ◽  
Ji Shen ◽  
Rong Chen ◽  
Enfeng Liu
Keyword(s):  
Black Carbon ◽  
Sichuan Province ◽  
Western Sichuan ◽  
History Of

scholarly journals Hydraulic characteristics and sediment generation on slope erosion in the Three Gorges Reservoir Area, China

2016 ◽  
Vol 64 (3) ◽  
pp. 237-245 ◽  
Author(s):  
Feng Qian ◽  
Dongbin Cheng ◽  
Wenfeng Ding ◽  
Jiesheng Huang ◽  
Jingjun Liu
Keyword(s):  
Soil Erosion ◽  
Sediment Yield ◽  
Rainfall Intensity ◽  
Purple Soil ◽  
Three Gorges ◽  
Slope Gradient ◽  
Stream Power ◽  
Yield Rate ◽  
The Three Gorges ◽  
Subsurface Runoff

Abstract Hydrological processes play important roles in soil erosion processes of the hillslopes. This study was conducted to investigate the hydrological processes and the associated erosional responses on the purple soil slope. Based on a comprehensive survey of the Wangjiaqiao watershed in the Three Gorges Reservoir, four typical slope gradients (5°, 10°, 15°and 20°) were applied to five rainfall intensities (0.6, 1.1, 1.61, 2.12 and 2.54 mm·min-1). The results showed that both surface and subsurface runoff varied greatly depending on the rainfall intensity and slope gradient. Surface runoff volume was 48.1 to 280.1 times of that for subsurface runoff. The critical slope gradient was about 10°. The sediment yield rate increased with increases in both rainfall intensity and slope gradient, while the effect of rainfall intensity on the sediment yield rate was greater than slope gradient. There was a good linear relationship between sediment yield rate and Reynolds numbers, flow velocity and stream power, while Froude numbers, Darcy-Weisbach and Manning friction coefficients were not good hydraulic indicators of the sediment yield rate of purple soil erosion. Among the three good indicators (Re, v and w), stream power was the best predictor of sediment yield rate (R2 = 0.884). Finally, based on the power regression relationship between sediment yield rate, runoff rate, slope gradient and rainfall intensity, an erosion model was proposed to predict the purple soil erosion (R2 = 0.897). The results can help us to understand the relationship between flow hydraulics and sediment generation of slope erosion and offer useful data for the building of erosion model in purple soil.

Diel variations and seasonal dynamics of soil respirations in subalpine meadow in western Sichuan Province, China

2012 ◽  
Vol 32 (20) ◽  
pp. 6376-6386 ◽  
Author(s):  
胡宗达 HU Zongda ◽  
刘世荣 LIU Shirong ◽  
史作民 SHI Zuomin ◽  
刘兴良 LIU Xingliang ◽  
何飞 HE Fei
Keyword(s):  
Seasonal Dynamics ◽  
Sichuan Province ◽  
Western Sichuan ◽  
Subalpine Meadow ◽  
Diel Variations

Lasianobia nainysi, a new species from Sichuan, China (Lepidoptera, Noctuidae, Noctuinae)

Zootaxa ◽  
2021 ◽  
Vol 4927 (1) ◽  
pp. 113-122
Author(s):  
AIDAS SALDAITIS ◽  
ANTON V. VOLYNKIN ◽  
REZA ZAHIRI
Keyword(s):  
New Species ◽  
Related Species ◽  
Dna Barcode ◽  
Sichuan Province ◽  
Female Genitalia ◽  
Male And Female ◽  
Western Sichuan ◽  
Lepidoptera Noctuidae ◽  
A New Species

A new species of the genus Lasianobia Hampson, 1905, Lasianobia nainysi Saldaitis, Volynkin & Zahiri, sp. nov. is described from highlands of western Sichuan Province of China. The new species is closely related to Lasianobia albilinea (Draudt, 1950). Adults, male and female genitalia as well as DNA barcode data of the new and related species are presented. 

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