A study on agricultural logistics mode of karst region: the case of Guizhou province*

2014 ◽  
Author(s):  
Shanmei Song
Keyword(s):  
Guizhou Province ◽  
Karst Region ◽  
Logistics Mode

scholarly journals Evaluation of Water Resources Security in the Karst Region from the “Man-Land-Water” Perspective: A Case Study of Guizhou Province

Water ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 224 ◽  
Author(s):  
Qun-Wei Zheng ◽  
Wei-Ci Su ◽  
Feng-Tai Zhang ◽  
Zi-Qin Zhou
Keyword(s):  
Water Resources ◽  
Human Activity ◽  
Spatiotemporal Variation ◽  
Evaluation Index System ◽  
Guizhou Province ◽  
Karst Region ◽  
Security Evaluation ◽  
Activity Intensity ◽  
Comprehensive Index ◽  
Geomorphological Features

This paper constructs a water resources security evaluation model from the “man (human activity intensity)-land (geological and geomorphological features)-water (water resources background conditions)” perspective, which accounts for the characteristics of hydrology and water resources in karst areas. A water resources security evaluation index system is established from three aspects (i.e., the background conditions of water resources, human activity intensity and geological and geomorphological features). The evaluation standard threshold is determined in accordance with relevant standards and domestic/foreign development experience. Both the comprehensive weights obtained by the Lagrange coefficient and the multi-objective fuzzy membership functions are used to comprehensively evaluate the spatial and temporal evolution of water resources security in Guizhou Province from 2001 to 2015. The results show that the water resources security comprehensive index of Guizhou Province was between 0.6 and 0.8 during this time (relatively safe type) and the safety was trending upwards. However, the comprehensive index of water resources security of each city in Guizhou Province demonstrates significant spatiotemporal variation. Whilst the comprehensive index was low in the Western part and high in the Eastern part of the province, it generally improved over time for the entire province. Moreover, the criteria layer indexes of water resources security in Guizhou Province and all cities also showed different degrees of variation and regional consistency across space and time. The interaction among these three aspects promoted the spatiotemporal variation of the Water Resources Security Comprehensive Index. In order to safeguard and improve water resources security, it is important to strengthen ecological and environmental management, promote the efficient use of water resources, establish sound management measures and security system related institutions and ensure water resources security.

Integrated crop-livestock production systems in China

2008 ◽  
Vol 30 (2) ◽  
pp. 221 ◽  
Author(s):  
F. J. Hou ◽  
Z. B. Nan ◽  
Y. Z. Xie ◽  
X. L. Li ◽  
H. L. Lin ◽  
...  
Keyword(s):  
Environmental Sustainability ◽  
Production Systems ◽  
Effective Means ◽  
Farming Systems ◽  
Livestock Production ◽  
Guizhou Province ◽  
Western China ◽  
Karst Region ◽  
Rangeland Degradation ◽  
The People

The integrated crop-livestock production system provides most of the food needed by the people of China. Five types of integrated production systems are recognised; rangeland, grain crops, crop/pasture, agro-silvopastoral and ponds. Development of more sustainable and integrated crop-pasture-rangeland-livestock production systems has been recently achieved. Demonstrations of the integrated systems at household, village and regional levels are occurring for rain-fed agriculture on the Loess Plateau, the Hexi Corridor, north-western China and the Karst region of Guizhou Province, south-western China. These indicate that integration of crop, livestock and forage are effective means of improving agricultural productivity, environmental sustainability and farmers’ incomes. Widespread adoption of integrated farming systems should also reduce rangeland degradation.

scholarly journals Petrocodon luteoflorus (Gesneriaceae), a new species from karst region in Guizhou, China

PhytoKeys ◽  
2020 ◽  
Vol 157 ◽  
pp. 167-173
Author(s):  
Zhi-Wei Fan ◽  
Lei Cai ◽  
Jia-Wen Yang ◽  
Sheng-Hu Tang ◽  
Fang Wen
Keyword(s):  
New Species ◽  
Nature Reserve ◽  
Guizhou Province ◽  
Karst Region ◽  
Similar Species ◽  
Diagnostic Characters ◽  
National Nature Reserve ◽  
A New Species

A new species of Gesneriaceae, Petrocodon luteoflorus Lei Cai & F.Wen was first described and illustrated from Maolan National Nature Reserve, Libo County, Guizhou Province, China. The diagnostic characters and notes of this species between its most morphologically similar species, P. dealbatus Hance, a detailed description, colour photographs, etymology, as well as distribution and habitat, are also provided in this paper.

scholarly journals Increasing SOC sequestration and closing N cycle during post-agricultural restoration in karst region, Southwest China

2021 ◽  
Author(s):  
Man Liu ◽  
Guilin Han ◽  
Qian Zhang
Keyword(s):  
Southwest China ◽  
N Uptake ◽  
Guizhou Province ◽  
Karst Region ◽  
Inorganic N ◽  
N Cycle ◽  
Sequestration Potential ◽  
Agricultural Restoration ◽  
Time Substitution ◽  
N Status

Abstract Purpose Post-agricultural restoration affects soil organic carbon (SOC) sequestration and ecosystem nitrogen (N) cycle. However, the control mechanism of SOC sequestration and alteration of ecosystem N status following post-agricultural restoration are not well understood in karst regions. Methods Croplands, abandoned croplands, and native vegetation forests were selected to represent three stages following post-agricultural restoration using a space for time substitution approach in a karst critical zone in Guizhou province, Southwest China. The variations of soil aggregate associated SOC and relationships between soil Ca and SOC were analyzed to identify SOC sequestration potential. Foliar δ15N composition and soil to plant 15N enrichment factor (EF = δ15Nlitter − δ15Nsoil) were analyzed to determine ecosystem N status. Results Macro-aggregate proportions and their SOC concentrations significantly increased following post-agricultural restoration. Soil Ca concentrations non-linearly increased with increasing SOC concentrations of bulk soils and aggregates. Foliar δ15N values and EF values significantly decreased following post-agricultural restoration, mainly attributed to the increasing plant uptake of 15N-depleted inorganic N, which was produced from soil organic nitrogen (SON) mineralization and nitrification. During post-agricultural restoration, the increasing plant biomass and slow SON mineralization led to more inorganic N uptake and less N loss, i.e., a more closed N cycle. Conclusion Soil aggregates and Ca play important roles in promoting SOC sequestration, and ecosystem N cycles are towards closed during post-agricultural restoration in the karst ecosystem.

Effects of artificial Cryptomeria fortunei forests on the plant community and water content of a Polytrichum commune bog in a karst region in southwestern Guizhou Province, China

2019 ◽  
Vol 39 (17) ◽  
Author(s):  
张勇 ZHANG Yong ◽  
崔海军 CUI Haijun ◽  
张银烽 ZHANG Yinfeng ◽  
杨苑君 YANG Yuanjun ◽  
岳亮亮 YUE Liangliang ◽  
...  
Keyword(s):  
Water Content ◽  
Plant Community ◽  
Guizhou Province ◽  
Karst Region ◽  
Polytrichum Commune ◽  
Southwestern Guizhou ◽  
Southwestern Guizhou Province

Spatiotemporal dynamics and influencing factors of poverty in ecologically fragile areas of a karst region: A case study of Guizhou Province

2019 ◽  
Vol 39 (18) ◽  
Author(s):  
夏四友 XIA Siyou ◽  
赵媛 ZHAO Yuan ◽  
文琦 WEN Qi ◽  
许昕 XU Xin ◽  
崔盼盼 CUI Panpan ◽  
...  
Keyword(s):  
Influencing Factors ◽  
Spatiotemporal Dynamics ◽  
Guizhou Province ◽  
Karst Region

scholarly journals Impact of Climate Change on the Growth of Typical Crops in Karst Areas: A Case Study of Guizhou Province

2019 ◽  
Vol 2019 ◽  
pp. 1-16
Author(s):  
Jun Ma ◽  
Baisha Weng ◽  
Wuxia Bi ◽  
Dan Xu ◽  
Ting Xu ◽  
...  
Keyword(s):  
Climate Change ◽  
Winter Wheat ◽  
Cycle Length ◽  
Growth Period ◽  
System Structure ◽  
Guizhou Province ◽  
Karst Region ◽  
Weather Events ◽  
Crop Cycle ◽  
The Impact

Climate change has emerged as a significant man-made global environmental challenge marked by rising temperature. The global rising temperature is supposed to alter climatic patterns like floods and droughts, thereby affecting human life supporting system and global food production. In order to clarify the impact of weather events on agricultural production in karst landforms, this study selected the indices of the growth period of crops (start time and duration), growing season precipitation, intense precipitation, number of consecutive rainless days, and number of drought-flood abrupt alternation events to evaluate the variation trend of future weather events and their impact on crop growth in Guizhou Province, China. The results show that (1) the climate is generally getting warmer. From 2019 to 2050, the sowing period of winter wheat and rice tends to be postponed. The duration of maize and rice’s growth period will be shortened, and the life cycle of wheat also emerges as having a decreasing tendency except for those from the southern region. Comparing with the mean value during 1961 to 2018, the average crop cycle length of winter wheat, summer maize, and rice was shortened. The rate of shortening of crop cycle length is faster than the value during 1961 to 2018. (2) In the next 30 years, extreme precipitation concentrates in June and mainly falls in the central and southeast parts of Guizhou Province. In addition, summer is the outbreak period of drought events and drought-flood abrupt alternation events, which has a great impact on crop’s growth. This study can provide references for the planting system, structure, layout, and management of crops in the karst region.

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