Land plants in natural soil form intimate relationships with the diverse root bacterial microbiota. A growing body of evidence shows that these microbes are important for plant growth and health. Root microbiota compo...Land plants in natural soil form intimate relationships with the diverse root bacterial microbiota. A growing body of evidence shows that these microbes are important for plant growth and health. Root microbiota composition has been widely studied in several model plants and crops; however, little is known about how root microbiota vary throughout the plant's life cycle under field conditions. We performed longitudinal dense sampling in field trials to track the time-series shift of the root microbiota from two representative rice cultivars in two separate locations in China. We found that the rice root microbiota varied dramatically during the vegetative stages and stabilized from the beginning of the reproductive stage, after which the root microbiota underwent relatively minor changes until rice ripening. Notably, both rice genotype and geographical location influenced the patterns of root microbiota shift that occurred during plant growth. The relative abundance of Deltaproteobacteria in roots significantly increased overtime throughout the entire life cycle of rice, while that of Betaproteobacteria, Firmicutes, and Gammaproteobacteria decreased. By a machine learning approach, we identified biomarker taxa and established a model to correlate root microbiota with rice resident time in the field(e.g., Nitrospira accumulated from 5 weeks/tillering in field-grown rice). Our work provides insights into the process of rice root microbiota establishment.展开更多
Legacy phosphorus,accumulated from past anthropogenic activities,poses persistent and complex threats to global water quality.Despite extensive efforts to control phosphorus inputs,legacy phosphorus can persist for de...Legacy phosphorus,accumulated from past anthropogenic activities,poses persistent and complex threats to global water quality.Despite extensive efforts to control phosphorus inputs,legacy phosphorus can persist for decades and undermine restoration goals.Emerging evidence suggests that shifts in regional development patterns profoundly reshape the dynamics and environmental risks of legacy phosphorus accumulation and mobilization.However,the mechanisms by which development pattern shifts reshape legacy phosphorus trajectories remain poorly understood.Here we show the complex pathways linking development-driven land-use changes,biogeochemical buffering capacities,and legacy phosphorus mobilization through an integrative modeling framework that couples developmental shift coefficients,anthropogenic phosphorus inventories,and riverine time-lag modeling to diagnose and predict long-term legacy phosphorus risks.Using the Songhua River as a case study,our results reveal that shifts from industrial to agricultural dominance significantly amplify legacy phosphorus accumulation by 86 times.Consequently,legacy phosphorus accounts for 65.4%-69.9%,surpassing current-year inputs and becoming the primary driver of riverine pollution.Furthermore,we demonstrate that development shifts systematically alter the dominant controlling factors,from fossil fuel emissions and drainage infrastructure to soil retention characteristics and agricultural practices,reshaping mitigation priorities.Our framework provides a generalizable methodology for quantifying legacy phosphorus risks under dynamic development patterns,offering immediate applications for water quality management.More broadly,this framework offers critical insights that can guide sustainable management strategies for linking evolving regional development patterns with long-term ecological restoration.展开更多
2018 marks the beginning of implementing the agenda mapped out by the 19th National Congress of the Communist Party of China （CPC） and the 40th anniversary of China＇s reform and opening up, as well as an important ...2018 marks the beginning of implementing the agenda mapped out by the 19th National Congress of the Communist Party of China （CPC） and the 40th anniversary of China＇s reform and opening up, as well as an important year for carrying out the 13th Five- Year Plan （2016-20）, all of which endowed 2017＇s Central Economic Work Conference with profound significance.展开更多
This study investigates the sustainability implications of the theoretical models of industrialization and urbanization pioneered by Dixit and Stiglitz^(1) so to open the theoretical “black box” of the unsustainabil...This study investigates the sustainability implications of the theoretical models of industrialization and urbanization pioneered by Dixit and Stiglitz^(1) so to open the theoretical “black box” of the unsustainability of the traditional industrialization mode, and shows how to reshape the relationship between the environment and development under the paradigm of ecological civilization. It finds that the theoretical models that “perfectly” simulate the traditional industrialization mode all have the implicit consequence of environmental unsustainability. Nonetheless, this limitation is not due to the problems of the models themselves but is more a result of the limitations of the traditional developmental and neoclassical economics paradigms of the industrial era. Therefore, the consequences of unsustainability cannot simply be avoided through external policies such as technological progress and environmental regulations, nor can they be prevented by simply adjusting some parameters in these theoretical models. Instead, a shift is required in both the developmental and the economics paradigms formed in the traditional industrial era. From an ecological civilization perspective, this study rethinks the basic issues of economics along the two lines of the ends(what) and the means(how) of development;briefly reviews the history of economic thought;and uses a conceptual framework to reorganize the relevant intellectual profundities that are neglected in standard neoclassical economics. The study further formalizes the conceptual framework in a general form model and shows how a paradigm shift in development could shift the trade-offs from the multiple goals of the economy, the environment, and well-being in the traditional industrial era to mutual reinforcement in ecocivilization.展开更多
基金supported by the“Strategic Priority Research Program”of the Chinese Academy of Sciences(XDB11020700)CPSF-CAS Joint Foundation for Excellent Postdoctoral Fellows(2016LH00012)+1 种基金Strategic Priority Research Program of the Chinese Academy of Sciences(QYZDB-SSW-SMC021)the National Natural Science Foundation of China(31772400)
文摘Land plants in natural soil form intimate relationships with the diverse root bacterial microbiota. A growing body of evidence shows that these microbes are important for plant growth and health. Root microbiota composition has been widely studied in several model plants and crops; however, little is known about how root microbiota vary throughout the plant's life cycle under field conditions. We performed longitudinal dense sampling in field trials to track the time-series shift of the root microbiota from two representative rice cultivars in two separate locations in China. We found that the rice root microbiota varied dramatically during the vegetative stages and stabilized from the beginning of the reproductive stage, after which the root microbiota underwent relatively minor changes until rice ripening. Notably, both rice genotype and geographical location influenced the patterns of root microbiota shift that occurred during plant growth. The relative abundance of Deltaproteobacteria in roots significantly increased overtime throughout the entire life cycle of rice, while that of Betaproteobacteria, Firmicutes, and Gammaproteobacteria decreased. By a machine learning approach, we identified biomarker taxa and established a model to correlate root microbiota with rice resident time in the field(e.g., Nitrospira accumulated from 5 weeks/tillering in field-grown rice). Our work provides insights into the process of rice root microbiota establishment.
基金supported by the National Key R&D Program of China(2022YFB2302802)the National Natural Science Foundation of China(No.41877396)+1 种基金China Postdoctoral Science Foundation(No.2022M710953)the Autonomy Project of State Key Laboratory of Urban-rural Water Resource&Environment(No.2024TS11)。
文摘Legacy phosphorus,accumulated from past anthropogenic activities,poses persistent and complex threats to global water quality.Despite extensive efforts to control phosphorus inputs,legacy phosphorus can persist for decades and undermine restoration goals.Emerging evidence suggests that shifts in regional development patterns profoundly reshape the dynamics and environmental risks of legacy phosphorus accumulation and mobilization.However,the mechanisms by which development pattern shifts reshape legacy phosphorus trajectories remain poorly understood.Here we show the complex pathways linking development-driven land-use changes,biogeochemical buffering capacities,and legacy phosphorus mobilization through an integrative modeling framework that couples developmental shift coefficients,anthropogenic phosphorus inventories,and riverine time-lag modeling to diagnose and predict long-term legacy phosphorus risks.Using the Songhua River as a case study,our results reveal that shifts from industrial to agricultural dominance significantly amplify legacy phosphorus accumulation by 86 times.Consequently,legacy phosphorus accounts for 65.4%-69.9%,surpassing current-year inputs and becoming the primary driver of riverine pollution.Furthermore,we demonstrate that development shifts systematically alter the dominant controlling factors,from fossil fuel emissions and drainage infrastructure to soil retention characteristics and agricultural practices,reshaping mitigation priorities.Our framework provides a generalizable methodology for quantifying legacy phosphorus risks under dynamic development patterns,offering immediate applications for water quality management.More broadly,this framework offers critical insights that can guide sustainable management strategies for linking evolving regional development patterns with long-term ecological restoration.
文摘2018 marks the beginning of implementing the agenda mapped out by the 19th National Congress of the Communist Party of China （CPC） and the 40th anniversary of China＇s reform and opening up, as well as an important year for carrying out the 13th Five- Year Plan （2016-20）, all of which endowed 2017＇s Central Economic Work Conference with profound significance.
基金This study is sponsored by the RIEco Innovation Project"Economics in the Perspective of Ecocivilization and Its Policy Implications"(2022STSA02)at Chinese Academy of Social Sciences.
文摘This study investigates the sustainability implications of the theoretical models of industrialization and urbanization pioneered by Dixit and Stiglitz^(1) so to open the theoretical “black box” of the unsustainability of the traditional industrialization mode, and shows how to reshape the relationship between the environment and development under the paradigm of ecological civilization. It finds that the theoretical models that “perfectly” simulate the traditional industrialization mode all have the implicit consequence of environmental unsustainability. Nonetheless, this limitation is not due to the problems of the models themselves but is more a result of the limitations of the traditional developmental and neoclassical economics paradigms of the industrial era. Therefore, the consequences of unsustainability cannot simply be avoided through external policies such as technological progress and environmental regulations, nor can they be prevented by simply adjusting some parameters in these theoretical models. Instead, a shift is required in both the developmental and the economics paradigms formed in the traditional industrial era. From an ecological civilization perspective, this study rethinks the basic issues of economics along the two lines of the ends(what) and the means(how) of development;briefly reviews the history of economic thought;and uses a conceptual framework to reorganize the relevant intellectual profundities that are neglected in standard neoclassical economics. The study further formalizes the conceptual framework in a general form model and shows how a paradigm shift in development could shift the trade-offs from the multiple goals of the economy, the environment, and well-being in the traditional industrial era to mutual reinforcement in ecocivilization.
