التفاصيل البيبلوغرافية
| العنوان: |
RESPONSES OF SOIL RESPIRATION TO SIMULATED PRECIPITATION AND NITROGEN, PHOSPHORUS ADDITIONS IN HORQIN SANDY LAND OF NORTHEASTERN CHINA. |
| المؤلفون: |
Xinyuan Wang, Xueyong Zhao, Yulin Li, Xiaoan Zuo, Duo Cui, Hao Qu, Jie Lian |
| المصدر: |
Fresenius Environmental Bulletin; 2013, Vol. 22 Issue 5, p1463-1471, 9p |
| مستخلص: |
Soil respiration plays a key role in the carbon budget and carbon cycle of terrestrial ecosystems. To examine soil respiration response to fertilizer application and water addition, soil respiration was measured in a semiarid region of northeast China. We examined the effects of fertilizer application, water addition, and their interactions on soil respiration in a randomized block experiment, analyzed by repeated-measures ANOVA. The results indicated that the effects of fertilization on soil respiration were dependent on water addition, in 2010. However, soil respiration after fertilizer application was not significantly different from the control, in 2011, under the same water conditions. Soil temperature clearly affected soil respiration, and explained 9.8-22.5% of the variation in soil respiration of 2010, and 25.8-48.3% in 2011. However, soil water dynamics has an overriding influence on soil respiration in Horqiñ Sandy Land. A simple empirical model indicated that soil water content explained 22.7-86.1% of the soil respiration dy-namics under water and fertilization treatments. Compared to temperature, we found that soil moisture has an overriding effect on soil respiration in Horqin Sandy Land. [ABSTRACT FROM AUTHOR] |
|
Copyright of Fresenius Environmental Bulletin is the property of PRT-Parlar Research & Technology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) |
| قاعدة البيانات: |
Supplemental Index |
