scholarly journals Global negative effects of nitrogen deposition on soil microbes

2018 ◽  
Vol 12 (7) ◽  
pp. 1817-1825 ◽  
Author(s):  
Tian’an Zhang ◽  
Han Y. H. Chen ◽  
Honghua Ruan
2021 ◽  
Author(s):  
Tobias Roth ◽  
Lukas Kohli ◽  
Beat Rihm ◽  
Reto Meier ◽  
Valentin Amrhein

2019 ◽  
Vol 23 (5 Part A) ◽  
pp. 2551-2559
Author(s):  
Nanjie Li ◽  
Qingping Zeng ◽  
Shuhui Jiang ◽  
Binghui He

In order to demonstrate the response of soil microbial community and hydrothermal environment to nitrogen deposition (low nitrogen N20: 20 kg?hm?2; medium nitrogen N40: 40 kg?hm?2; high nitrogen N60: 60 kg?hm-2, and contrast N0: 0 kg?hm?2), a Pinus massoniana forest in Central Asia was chosen to do the nitrogen deposition simulation experiment. This research is aimed to provide a theoretical evidence for the protection of soil ecosystem under different forest types in china. The results showed that: soil microbes of Pinus massoniana forest were in seasonal changes (spring, autumn, winter, and summer). Differences in different seasons were significant: a very significant quadratic relationship was shown between soil microbes and soil temperature. However, the relationship between soil microbes and the soil water content was not closely related. The N deposition reduced the relationship between microbes and temperature but increased the correlation between microbes and water content: effects of N deposition on soil temperature and soil water content were significant, but the effects were in small scale, and the effects of N deposition on soil microbial community structure were significant.


2013 ◽  
Vol 100 (7) ◽  
pp. 1458-1470 ◽  
Author(s):  
Emily C. Farrer ◽  
Donald J. Herman ◽  
Eva Franzova ◽  
Trang Pham ◽  
Katharine N. Suding

2020 ◽  
Vol 719 ◽  
pp. 137442
Author(s):  
Yuming Sun ◽  
Junjie Guo ◽  
Yingrui Li ◽  
Gongwen Luo ◽  
Ling Li ◽  
...  

2018 ◽  
Vol 62 (2) ◽  
pp. 97-107 ◽  
Author(s):  
Nina Keith

Abstract. The positive effects of goal setting on motivation and performance are among the most established findings of industrial–organizational psychology. Accordingly, goal setting is a common management technique. Lately, however, potential negative effects of goal-setting, for example, on unethical behavior, are increasingly being discussed. This research replicates and extends a laboratory experiment conducted in the United States. In one of three goal conditions (do-your-best goals, consistently high goals, increasingly high goals), 101 participants worked on a search task in five rounds. Half of them (transparency yes/no) were informed at the outset about goal development. We did not find the expected effects on unethical behavior but medium-to-large effects on subjective variables: Perceived fairness of goals and goal commitment were least favorable in the increasing-goal condition, particularly in later goal rounds. Results indicate that when designing goal-setting interventions, organizations may consider potential undesirable long-term effects.


Crisis ◽  
2013 ◽  
Vol 34 (5) ◽  
pp. 348-353 ◽  
Author(s):  
Hajime Sueki

Background: Previous studies have shown that suicide-related Internet use can have both negative and positive psychological effects. Aims: This study examined the effect of suicide-related Internet use on users’ suicidal ideation, depression/anxiety tendency, and loneliness. Method: A two-wave panel study of 850 Internet users was conducted via the Internet. Results: Suicide-related Internet use (e.g., browsing websites about suicide methods) had negative effects on suicidal ideation and depression/anxiety tendency. No forms of suicide-related Internet use, even those that would generally be considered positive, were found to decrease users’ suicidal ideation. In addition, our results suggest that the greater the suicidal ideation and feelings of depression and loneliness of Internet users, the more they used the Internet. Conclusion: Since suicide-related Internet use can adversely influence the mental health of young adults, it is necessary to take measures to reduce their exposure to such information.


Sign in / Sign up

Export Citation Format

Share Document