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| 1 | The hydrological effect between Jingjiang River and Dongting Lake during the initial period of Three Gorges Project operation显示文摘从 1951 ~ 2008 基于测量水文学数据,在 Jingjiang 河和东廷·莱克之间的链水文学效果被比较方法在三峡工程操作以后分析。结果显示那 1 ) 用 Yichang 在 78.9% 总数上面做到 Chenglingji 的 Jingjiang 河里的搜索数量,和它搜索紧张的一般水准比后者高;2 ) 在 Jingjiang 河的三个插头的水和沙转向率被 2.33% 和 2.78% 独立减少;3 ) 通过总共进东廷·莱克的三个插头的多年一般水准流量和沉积的比例分别地在 7.7% 和 24.4% 减少了;4 ) 在东廷·莱克,,沉积累积的速度被 26.7% 降低在洪水季节,流量数量是 20.2% 不到多年一般水准价值,逐年导致水的季节的缺乏。当后者在连续的年,喝的缺乏和工业水里在夏天和秋天导致了干旱时,前者延长了湖生活,装运象鸟的减少和 Microtus 的快增加那样的紧张,以及生态的问题强音;5 ) 在湖插头的沉积和洪水搬运能力的多年一般水准价值被 26.6% 和 3.7% 分别地增加,堤有效地被保护。然后,适应河湖关系的新变化,一些建议被提出例如优化三座峡水库的进一步的操作节目,再考河的想法和湖规定,和河和湖的维持的连接。 | CHANG Jiang LI Jingbao LU Dianqing ZHU Xiang LU Chengzhi ZHOU Yueyun DENG Chuxiong | 2010 | Journal of Geographical Sciences2010，20，5： | 33 |
| 2 | Methylesterification of cell-wall pectin controls the diurnal flower-opening times in rice显示文摘Flowers are the core reproductive organ of plants, and flowering is essential for cross-pollination. Diurnal flower-opening time is thus a key trait influencing reproductive isolation, hybrid breeding, and thermostability in plants. However, the molecular mechanisms controlling this trait remain unknown. Here, we report that rice Diurnal Flower Opening Time 1 (DFOT1) modulates pectin methylesterase (PME) activity to regulate pectin methylesterification levels of the lodicule cell walls, which affect lodicule swelling to control diurnal flower-opening time. DFOT1 is specifically expressed in the lodicules, and its expression gradually increases with the approach to flowering but decreases with flowering. Importantly, a knockout of DFOT1 showed earlier diurnal flower opening. We demonstrate that DFOT1 interacts directly with multiple PMEs to promote their activity. Knockout of PME40 also resulted in early diurnal flower opening, whereas overexpression of PME42 delayed diurnal flower opening. Lower PME activity was observed to be associated with higher levels of pectin methylesterification and the softening of cell walls in lodicules, which contribute to the absorption of water by lodicules and cause them to swell, thus promoting early diurnal flower opening. Higher PME activity had the opposite effect. Collectively, our work uncovers a molecular mechanism underlying the regulation of diurnal flower-opening time in rice, which would help reduce the costs of hybrid breeding and improve the heat tolerance of flowering plants by avoiding higher temperatures at anthesis. | Mumei Wang Xiaopei Zhu Guoqing Peng Minglong Liu Shuqing Zhang Minghao Chen Shitang Liao Xiaoying Wei Peng Xu Xiyu Tan Fangping Li Zhichuan Li Li Deng Ziliang Luo Liya Zhu Shuai Zhao Dagang Jiang Jing Li Zhenlan Liu Xianrong Xie Shaokui Wang Aimin Wu Chuxiong Zhuang Hai Zhou | 2022 | Molecular Plant2022，15，6： | 2 |
| 3 | Advantages and disadvantages of terracing:A comprehensive review显示文摘For thousands of years,terracing has been one of the most important systems for preventing soil erosion,conserving water,and increasing agricultural production.Despite having a long history,the wide-ranging effects and mechanisms of terracing are poorly understood owing to large-scale spatial and temporal distribution patterns and the challenges related to assessing the ecosystem services of terraced landscapes.Thus,our study aims to review comprehensively the effect of terraces by describing the mechanisms behind terraced systems.Terraces provide many ecosystem services,including the reduction of runoff and sediment by over 41.9%and 52%,respectively,and the improvement of grain yields and soil moisture content by 44.8%and 12.9%,respectively.In addition,terracing can also contribute toward the conservation of plant biodiversity on a local scale.However,as terraces age,a number of disadvantages gradually emerge,including interference with water circulation and the development of serious environmental problems caused by poorly designed or mismanaged terraces,where the average runoff and soil loss can be 1—5 times that of well-managed terraces.Although understanding the complexity and multifaceted effects of terracing is vital for terrace construction and management,the negative effects of terracing are often not considered,and existing studies have several shortcomings.Within this context,this paper aims to describe both the benefits and disadvantages of terracing,investigate the gaps in current research,as well as discuss preventive and remedial measures so as to negate the possible bad impacts of terracing. | Chuxiong Deng Guangye Zhang Yaojun Liu Xiaodong Nie Zhongwu Li Junyu Liu Damei Zhu | 2021 | International Soil and Water Conservation Research2021，9，3： | 1 |
| 4 | Thermal stability of soil organic carbon subjected to water erosion as a function of edaphic factors显示文摘The stability of soil organic carbon(SOC),as it relates to resistance to decomposition,is important for greenhouse gas emission and climate change.However,the SOC stabilization and its related influencing factors subjected to water erosion remain uncertain.The objective of the current study was to determine the SOC stability under long-term water erosion and to investigate the link between SOC stability and edaphic factors.Soil samples from eroded,depositional,and control sites in a closed watershed in subtropical China were collected.The SOC concentration,carbon functional groups,soil physicochemical properties,and thermal stability of SOC were determined.The study results showed that the primary component of the SOC functional groups was O-alkyl carbon(reached 40%),and its proportion has no significant difference among different sites.The TG-T50(the temperature at which 50%of the soil organic matter is lost)values indicated that the SOC thermal stability in the eroded topsoil was higher than that of the deposited topsoil.The carbon functional groups were lack of relation with SOC thermal stability(p>0.05).However,the TG-T_(50) was significantly positively correlated with the cation exchange capacity and silt,but remarkably negatively correlated with SOC,dissolved organic carbon,total nitrogen,sand,clay,pH,aluminum,specific surface area,and iron oxides.These results indicated that the edaphic factors,which were strongly affected by micro-environment,are the main factors affecting thermal stability of organic carbon.The SOC stabilization under the effects of long-term water erosion should be addressed from the perspective of the ecosystem. | Zhongwu Li Linhui Xiao Chuxiong Deng Zaijian Yuan Chen Liang Qian Xiong Zeting Li Xiaodong Nie | 2022 | International Journal of Sediment Research2022，37，1： | 0 |
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