Increased precipitation modulates the influence of nitrogen and litter inputs on the nutrient resorption proficiency rather than efficiency of Leymus chinensis
Increased precipitation modulates the influence of nitrogen and litter inputs on the nutrient resorption proficiency rather than efficiency of Leymus chinensis
复制标题
降水增加调节氮和凋落物输入对羊草养分吸收能力的影响，而不是效率的影响
DOI：
10.1007/s11258-017-0790-2
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发表时间：
2018-02
期刊：
影响因子：
1.7
通讯作者：
Zhang Yingjun
中科院分区：
文献类型：
--
作者：
Shen Yue;Yang Xin;Sun Xiao;Chen Wenqing;Yang Gaowen;Liu Nan;Chen Jishan;Zhang Yingjun
衰老器官对养分的再吸收是一种重要的保护机制，通常受到土壤养分供应和植物生长需求的影响。因此，这是可能的，增加氮（N），降水量和凋落物可能会导致养分再吸收的变化，因为在土壤中的养分变化和加速植物生长，以缓解干旱和半干旱环境中的水分限制。研究了水分、氮素和凋落物添加量对内蒙古羊草（Leymus chinensis）茎叶养分吸收效率和氮磷利用效率的影响。结果表明，在水分胁迫条件下，施氮显著降低了叶片对氮的吸收效率，而在大气降水条件下，施氮显著提高了叶片对磷的吸收效率。有没有明显的影响，无论是凋落物或水除了对N和P的再吸收效率。然而，N和凋落物添加显着改变N和P再吸收profastness，这些影响调制的水分供应。此外，在再吸收profectin的变化主要与响应水，N和凋落物除了叶P的绿色器官的营养状况的改变。我们的研究结果强调了增加降水量的重要性，在调节植物的养分再吸收能力下，潜在的增加养分的可用性在半干旱草原。因此，全球降水和氮的变化，以及相应的凋落物的变化可能会导致复杂的影响植物养分经济，反过来，可能会影响养分返回到土壤。
Resorption of nutrients from senescing organs is an important conservation mechanism that is usually influenced by the supply of soil nutrients and plant growth requirements. Therefore, it is likely that increases in nitrogen (N), precipitation, and litter could lead to changes in nutrient resorption because of changes in nutrients in the soil and accelerated plant growth in response to the alleviation of water limitations in arid and semiarid environments. In the current study, we investigated the effects of water, N, and litter addition on the nutrient resorption efficiency and proficiency of N and phosphorus (P) in leaves and stems of Leymus chinensis in Inner Mongolia, China. Our results showed that N addition significantly decreased the N resorption efficiency in leaves under water addition, and increased P resorption efficiency under ambient precipitation conditions. There was no apparent influence of either litter or water addition on N and P resorption efficiencies. However, N and litter addition significantly altered N and P resorption proficiencies, and these effects were modulated by water availability. Furthermore, changes in resorption proficiencies were mainly associated with alterations in the nutritional status of green organs in response to water, N and litter addition, except for leaf P. Our findings highlight the importance of increased precipitation in modulating the nutrient resorption proficiency of plants under potentially increased nutrient availability in semiarid grasslands. Therefore, global changes in precipitation and N, and corresponding litter changes could result in complex effects on plant nutrient economies and, in turn, could influence the return of nutrients to the soil.
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在典型草原中，凋落物的添加能否调节植物生产力对降水和氮沉降增加的反应？
影响因子：
2
作者：
Shen Yue;Chen Wenqing;Yang Gaowen;Yang Xin;Liu Nan;Sun Xiao;Chen Jishan;Zhang Yingjun
通讯作者：
Zhang Yingjun
DOI：
10.5860/choice.31-3799
发表时间：
2013-01
期刊：
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影响因子：
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作者：
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S. Pal
影响因子：
3.7
作者：
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Xuhui Zhou;M. Talley;Yiqi Luo
影响因子：
9.7
作者：
Changhui Wang;S. Wan;X. Xing;Lei Zhang;Xingguo Han
通讯作者：
Changhui Wang;S. Wan;X. Xing;Lei Zhang;Xingguo Han
DOI：
10.1007/s00468-004-0335-x
发表时间：
2004-05
期刊：
Trees
影响因子：
--
作者：
A. Peuke;H. Rennenberg
通讯作者：
A. Peuke;H. Rennenberg