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Dynamic evolution and the mechanism of modern gully agriculture regional function in the Loess Plateau

Journal of Geographical Sciences 2022年第11期32卷 2229-2250页

作者： QU Lulu LI Yurui WANG Yongsheng DONG Shijie WEN Qi School of Public Policy and Administration Chongqing UniversityChongqing 400044China Institute of Geographic Sciences and Natural Resources Research CASBeijing 100101China Key Laboratory of Regional Sustainable Development Modeling CASBeijing 100101China School of Geography and Planning Ningxia UniversityYinchuan 750021China

The agricultural regional type and function are the key theoretical issues in agricultural geography research.Gully agriculture in the Loess Plateau is a new regional type of agricultural system with the coupling development of the modern gully human-earth relationship.The study of its functional changes is of great practical significance for food security,rural revitalization and sustainable development of regional agriculture in the region of interest.This paper analyses the multifunctional change of gully agriculture in the Loess Plateau and its dynamic mechanism by using large-scale remote sensing data,topographic relief amplitude model,and spatial econometric model to understand internal implications for evolution differentiation at the basin level.The results show that:(1)The spatial concentration of production and supply function of agricultural products(APF)in the gully of the Loess Plateau gully is high,while the ecological conservation and maintenance function(ECF),employment and social security function(ESF),cultural heritage and leisure function(CRF)are relatively low.The four functions’spatial distribution has revealed an apparent regularity.(2)APF has been significantly enhanced,which is mainly distributed in point clusters and strips in the farming and pastoral areas in northern Shaanxi to the Yanhe river basin.The high-value areas of ESF are clustered around the urbanized metropolitan circles and urban-rural staggered areas along the Great Wall.ECF is concentrated in areas with significant natural endowments and excellent ecological conditions.CRF is significantly higher in the municipal districts and the surrounding regional central cities.(3)There are noticeable differences in the gully agriculture regional function(GARF)evolution process due to the geographical environment and socio-economic development stages.In this regard,natural factors have tremendously affected APF,ESF,and ECF,while socio-economic factors greatly differ in the four functions.There are still differences in the driving mech

关键词： dynamic mechanism functional evolution gully human-earth system Loess Plateau modern gully agriculture transformation and development

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Plant carotenoids: recent advances and future perspectives

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Molecular Horticulture 2022年第1期2卷 30-50页

作者： Tianhu Sun Sombir Rao Xuesong Zhou Li Li Robert W.Holley Center for Agriculture and Health USDA-Agricultural Research ServiceCornell UniversityIthacaNY 14853USA Plant Breeding and Genetics Section School of Integrative Plant ScienceCornell UniversityIthacaNY 14853USA State Key Laboratory of Crop Genetics&Germplasm Enhancement Nanjing Agricultural UniversityNanjing 210095China

Carotenoids are isoprenoid metabolites synthesized de novo in all photosynthetic organisms.Carotenoids are essential for plants with diverse functions in photosynthesis,photoprotection,pigmentation,phytohormone synthesis,and signaling.They are also critically important for humans as precursors of vitamin A synthesis and as dietary antioxidants.The vital roles of carotenoids to plants and humans have prompted significant progress toward our understanding of carotenoid metabolism and regulation.New regulators and novel roles of carotenoid metabolites are continuously revealed.This review focuses on current status of carotenoid metabolism and highlights recent advances in comprehension of the intrinsic and multi-dimensional regulation of carotenoid accumulation.We also discuss the functional evolution of carotenoids,the agricultural and horticultural application,and some key areas for future research.

关键词： Carotenoids Metabolism Accumulation Regulation functional evolution

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functional diversification and molecular mechanisms of FLOWERING LOCUS T/TERMINAL FLOWER 1 family genes in horticultural plants

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Molecular Horticulture 2022年第1期2卷 266-278页

作者： Shuang Wang Yiman Yang Fadi Chen Jiafu Jiang State Key Laboratory of Crop Genetics and Germplasm Enhancement Key Laboratory of LandscapingMinistry of Agriculture and Rural AffairsKey Laboratory of Biology of Ornamental Plants in East ChinaNational Forestry and Grassland AdministrationCollege of HorticultureNanjing Agricultural UniversityNanjing 210095China

Flowering is an important process in higher plants and is regulated by a variety of factors,including light,tempera-ture,and phytohormones.Flowering restriction has a considerable impact on the commodity value and production cost of many horticultural crops.In Arabidopsis,the FT/TFL1 gene family has been shown to integrate signals from vari-ous flowering pathways and to play a key role in the transition from flower production to seed development.Studies in several plant species of the FT/TFL1 gene family have revealed it harbors functional diversity in the regulation of flowering.Here,we review the functional evolution of the FT/TFL1 gene family in horticulture plants and its unique regulatory mechanisms;in addition,the FT/TFL1 family of genes as an important potential breeding target is explored.

关键词： FLOWERING LOCUS T(FT) TERMINAL FLOWER 1(TFL1) Flowering functional evolution Horticultural plant

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北方农牧交错带乡村地域功能演化特征及驱动因素

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地理学报:英文版 2023年第10期33卷 1989-2010页

作者：崔潇邓茜月王永生 Key Laboratory of Regional Sustainable Development Modeling Institute of Geographic Sciences and Natural Resources ResearchCASBeijing 100101China College of Resources and Environment University of Chinese Academy of SciencesBeijing 100049China College of Tourism and Urban-Rural Planning Chengdu University of TechnologyChengdu 610059China

Rural decline is a global issue accompanied by the regional imbalanced development and dysfunction in rural areas.Coordinated interaction among production,living,and ecological functions is essential for the sustainability of rural regional systems.Based on the framework of“element-structure-function”,an indicator system was constructed to explore the evolution characteristics and driving factors of rural regional functions in the farming-pastoral ecotone of northern China(FPENC)using the models of entropy-based TOPSIS(Technique for Order of Preference by Similarity to Ideal Solution),revised vertical and horizontal comparison,and GeoDetector.The results indicated a gradual synergy of rural production,living,and ecological functions during the period 2000–2020.Improvements were observed in production and living functions,and higher ecological function was found in Hebei,Inner Mongolia,Liaoning,and Shaanxi.However,conflicts between ecological function and production and living functions were evident in Shanxi,Gansu,and Ningxia.The spatial structure played a dominant role in determining rural production,living,and ecological functions,with ratios of 38%,56%,and 84%,respectively.Land and industry emerged as the main driving factors influencing the evolution of rural regional functions.Notably,combined interactions of rural permanent population and primary industry output(0.73),grassland area and tertiary industry output(0.58),and forest area and tertiary industry output(0.72)were responsible for the changes observed in rural production,living,and ecological functions,respectively.The findings suggest that achieving coordinated development of rural regional functions can be accomplished by establishing differentiated rural sustainable development strategies that consider the coupling of population,land,and industry in FPENC.

关键词： rural regional system functional evolution driving factors production-living-ecological functions rural revitalization

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