Zheng, an ancient plucked string instrument, Has been revitalized by your beautiful interpretation. Music beats are so well controlled in your hands That they are endowed with life. In your amorous conversation with t...Zheng, an ancient plucked string instrument, Has been revitalized by your beautiful interpretation. Music beats are so well controlled in your hands That they are endowed with life. In your amorous conversation with the strings, You are expressing your adolescent secrets.展开更多
Your hair is flying to show your charm.Your outstanding performance demonstrates the beauty of Kunqu opera.In the early spring,Little flower buds permeate the fields.On the stage of life,You fulfil the dream that you ...Your hair is flying to show your charm.Your outstanding performance demonstrates the beauty of Kunqu opera.In the early spring,Little flower buds permeate the fields.On the stage of life,You fulfil the dream that you have expected for years.展开更多
文摘碳储量(Carbon storage,CS)影响陆地生态系统碳循环过程的稳定和平衡,定量评价CS时空变化与未来预测是实现区域可持续发展的关键环节,对区域生态环境管理具有重要意义。以黑土区典型农业小流域—阿什河流域为研究区,探讨以小流域为研究尺度的CS“历史-未来”时空变化,整合不同尺度下CS进而制定碳管理目标。结果表明,利用生态系统服务和权衡的综合评估模型(Integrated valuation of ecosystem services and trade-offs,InVEST)量化1995—2020年CS,总体减少171.42×104 t,年均损失达到6.87×104 t,以2010—2015年CS下降最显著。CS空间分布具有异质性,其高值区分布在流域上游区域。通过整合行政单元和水文单元尺度下的CS,以管理职责为导向,采用聚类分析方法划分该流域碳管理单元(3个单元和5个亚单元)。对各单元CS制定管理目标,利用CA-Markov模型预测自然情景和政策情景下2025年CS,表明碳管理措施的制定可有效减缓区域CS损失,减缓效率达47.52%。该研究可为明确黑土区农业小流域CS发展模式和可持续发展策略提供科学参考。
文摘Zheng, an ancient plucked string instrument, Has been revitalized by your beautiful interpretation. Music beats are so well controlled in your hands That they are endowed with life. In your amorous conversation with the strings, You are expressing your adolescent secrets.
文摘Your hair is flying to show your charm.Your outstanding performance demonstrates the beauty of Kunqu opera.In the early spring,Little flower buds permeate the fields.On the stage of life,You fulfil the dream that you have expected for years.
