Non-climatic component provoked substantial spatiotemporal changes of carbon and water use efficiency on the Mongolian Plateau
Non-climatic component provoked substantial spatiotemporal changes of carbon and water use efficiency on the Mongolian Plateau
复制标题
非气候因素引起蒙古高原碳和水利用效率的显着时空变化
DOI：
10.1088/1748-9326/ab9692
复制
发表时间：
2020-09
影响因子：
6.7
通讯作者：
Changliang Shao
中科院分区：
文献类型：
--
作者：
Gang Dong;Fangyuan Zhao;Jiquan Chen;Yaoqi Zhang;Luping Qu;Shicheng Jiang;Batkhishig Ochirbat;Jingyan Chen;Xiaoping Xin;Changliang Shao
抽象。了解人类学和气候变化对生态系统功能和动态的联合影响是全球环境变化研究的前沿之一。碳和水平衡对于蒙古高原等敏感地区的可持续生态系统和功能恢复尤为重要。在这项研究中，非气候因素（NCC）的意义上的碳和水的利用效率（CUE和WUE）的蒙古高原生态系统类型进行了量化。我们绘制了碳/水平衡的空间梯度，并划定了2000-2013年NCC驱动的CUE和WUE的热点，使用来自MODIS数据库的总和净初级生产力（GPP和NPP）和蒸散量（ET）产品。由于气候强迫（CF）和NCC，蒙古（MG）的CUE和WUE值显着高于内蒙古（IM）。NCC在高原草原CUE和WUE的变化中分别占16%和22%以上，但空间分布不均匀。净捐助国驱动的WUE值远高于CF驱动的值。NCC驱动的CUE热点与WUE热点不重叠，CUE热点集中在MG东部和IM东北部; WUE热点分布在MG中部和Khangai地区以及IM东部地区。MG的NCC驱动的CUE面积来自于人口增长和工业在国内生产总值中的份额，而MG的NCC驱动的WUE面积是由于牲畜的增长，但IM的耕地增长驱动。总之，我们的结论是，NCC引起的碳和水的利用重大时空变化。CF和NCC对碳和水平衡的影响在空间、生态系统类型和两个政治实体之间存在差异。
Abstract. Understanding the joint impact of anthropologic and climatic changes on ecosystem function and dynamics is among the frontiers in global environmental change studies. Carbon and water balances are especially crucial to the sustainable ecosystem and functional returns in sensitive regions such as the Mongolian Plateau. In this study, the significance of non-climatic component (NCC) on carbon and water use efficiency (CUE and WUE) is quantified among the ecosystem types on the Mongolian Plateau. We mapped the spatial gradients of carbon/water balance and delineated the hotspots of NCC-driven CUE and WUE for 2000–2013 using gross and net primary production (GPP and NPP) and evapotranspiration (ET) products derived from the MODIS databases. Significantly higher CUE and WUE values were found in Mongolia (MG) than in Inner Mongolia (IM) due to both climatic forcing (CF) and NCC. NCC was found to dominate the changes in CUE and WUE in the steppes on the plateau by over 16% and 22%, respectively, but with spatially uneven distributions. NCC-driven WUE values were much higher than those driven by CF. The hotspots for NCC-driven CUE did not overlap with those of WUE, with CUE hotspots concentrated in the east of MG and northeast of IM; WUE hotspots were found in the central and Khangai regions of MG and eastern regions of IM. The NCC-driven CUE area in MG was from population growth and the industrial shares in gross domestic product, while the NCC-driven WUE area was due to livestock growth in MG but driven by the growth of cultivated lands in IM. In sum, we conclude that NCC provoked substantial spatiotemporal changes on carbon and water use. CF and NCC effects on carbon and water balance varied in space, by ecosystem type, and between the two political entities.
登录
查看更多内容
影响因子：
4.8
作者：
Yi Fan;Jiquan Chen;Gabriela Shirkey;R. John;S. Wu;Hogeun Park;C. Shao
通讯作者：
Yi Fan;Jiquan Chen;Gabriela Shirkey;R. John;S. Wu;Hogeun Park;C. Shao
影响因子：
6.7
作者：
Chen, Jiquan;John, Ranjeet;Dong, Gang
通讯作者：
Dong, Gang
影响因子：
10.1
作者：
Chen, Jiquan;John, Ranjeet;Qi, Jiaguo
通讯作者：
Qi, Jiaguo
温带草原生态系统碳通量对气候变化的水介导响应
影响因子：
9.4
作者：
Niu, Shuli;Wu, Mingyu;Wan, Shiqiang
通讯作者：
Wan, Shiqiang
青藏高原与内蒙古草原水碳交换对气候变化的响应对比
影响因子：
6.2
作者：
Liu, Dan;Li, Yue;Piao, Shilong
通讯作者：
Piao, Shilong