Results 31 to 40 of about 3,987,320 (352)

Long-term nutrient inputs shift soil microbial functional profiles of phosphorus cycling in diverse agroecosystems

The ISME Journal, 2019
Microorganisms play an important role in soil phosphorus (P) cycling and regulation of P availability in agroecosystems. However, the responses of the functional and ecological traits of P-transformation microorganisms to long-term nutrient inputs are ...
Z. Dai, Guofei Liu, Huaihai Chen, Chengrong Chen, Jingkuan Wang, S. Ai, Dan Wei, Da-ming Li, B. Ma, Caixian Tang, P. Brookes, Jianming Xu   +11 more
semanticscholar   +1 more source

Characterization and Application of Magnetic Biochars from Corn Stalk by Pyrolysis and Hydrothermal Treatment

BioResources, 2016
Two novel magnetic biochar composites (FeC-H and FeC-P) were synthesized using corn stalks and ferrous sulfate through hydrothermal method and traditional pyrolysis, respectively. The samples were characterized by Fourier transform infrared spectroscopy (
Yuting Tu, Zhiping Peng, Peizhi Xu, Huanjia Lin, Xuena Wu, Linxiang Yang, Jichuan Huang   +6 more
doaj   +1 more source

Jasmonic acid-mediated enhanced regulation of oxidative, glyoxalase defense system and reduced chromium uptake contributes to alleviation of chromium (VI) toxicity in choysum (Brassica parachinensis L.)

Ecotoxicology and Environmental Safety, 2021
The cultivation of leafy vegetables on metal contaminated soil embodies a serious threat to yield and quality. In the present study, the potential role of exogenous jasmonic acid (JA; 0, 5, 10, and 20 µM) on mitigating chromium toxicity (Cr; 0, 150, and ...
Muhammad Kamran, Dan Wang, Haifa Abdulaziz Sakit Alhaithloul, Suliman Mohammed Alghanem, Tariq Aftab, Kaizhi Xie, Yusheng Lu, Chaohong Shi, Jie Sun, Wenjie Gu, Peizhi Xu, Mona Hassan Soliman   +11 more
doaj   +1 more source

Sensitivity Analysis of N₂O and CH₄ Emissions in a Winter Wheat–Rice Double Cropping System

Agriculture
The sensitivity of model outputs to parameter variations is crucial for effective model calibration and application. This study assessed the sensitivity of N2O and CH4 emissions to varying weather conditions and fertilization practices in a winter wheat ...
Chuang Liu, Jiabao Wang, Zhili Sun, Yixiang Sun, Yi Liu, Lianhai Wu   +5 more
doaj   +1 more source

On-Farm Assessment of Biosolids Effects on Nitrogen and Phosphorus Accumulation in Soils

Journal of Integrative Agriculture, 2012
A field plot experiment in a calcareous soil with wheat and maize rotation was carried out for 2 yr. The study aimed to investigate the effects of biosolids (sewage sludge or chicken manure) application on nitrogen (N) and phosphorus (P) accumulation in ...
Qiong LI, Ju-mei LI, Xi-long CUI, Dong-pu WEI, Yi-bing MA   +4 more
doaj   +1 more source

Seasonal Pattern of Nutrient Limitation in a Eutrophic Lake and Quantitative Analysis of the Impacts from Internal Nutrient Cycling.

Environmental Science and Technology, 2019
Nutrient dynamics in lakes are determined by the external anthropogenic discharges and unobserved internal cycling processes. In this work, a decadal nutrient data set from the eutrophic Lake Taihu, China, revealed a strong seasonal pattern of nutrient ...
Mengzhu Wang, Xiwen Xu, Zhen Wu, Xiaoqian Zhang, Peizhe Sun, Y. Wen, Zhen Wang, Xuebin Lu, Wei Zhang, Xuejun Wang, Yindong Tong   +10 more
semanticscholar   +1 more source

Variation in the seston C:N ratio of the Arctic Ocean and pan-Arctic shelves [PDF]

, 2014
Studying more than 3600 observations of particulate organic carbon (POC) and particulate organic nitrogen (PON), we evaluate the applicability of the classic Redfield C:N ratio (6.6) and the recently proposed Sterner ratio (8.3) for the Arctic Ocean and ...
Andersen, Tom, Bellerby, Richard G. J., Frigstad, Helene, Hessen, Dag O., Silyakova, Anna   +4 more
core   +1 more source

Soil quality, elemental stoichiometry and crop yield under partial substitution of chemical fertilizers with organic inputs in Vertisols: a six-site field study

Frontiers in Plant Science
Partial substitution of chemical fertilizers with organic amendments represents a promising approach to sustainable soil management, yet its integrated effects on soil quality and elemental stoichiometry in Vertisols remain insufficiently understood ...
Fahui Jiang, Shang Han, Wenlong Cheng, Li Song, Shan Tang, Hui Wang, Rongyan Bu, Min Li, Rui Zhu, Mahbub Ul Islam, Ji Wu   +10 more
doaj   +1 more source

A Comparative Study of Cerebral Oxygenation During Exercise in Hemodialysis and Peritoneal Dialysis Patients

Therapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Introduction Cognitive impairment and exercise intolerance are common in dialysis patients. Cerebral perfusion and oxygenation play a major role in both cognitive function and exercise execution; HD session per se aggravates cerebral ischemia in this population. This study aimed to compare cerebral oxygenation and perfusion at rest and in mild
Marieta P. Theodorakopoulou, Konstantina Dipla, Danai Faitatzidou, Fotini Iatridi, Areti Georgiou, Artemios Karagiannidis, Erasmia Sampani, Chrysostomos Dimitriadis, Aggelos Koutlas, Andreas Zafeiridis, Pantelis Sarafidis   +10 more
wiley   +1 more source

Effect of iron oxide on nitrification in two agricultural soils with different pH [PDF]

Biogeosciences, 2016
Iron (Fe) affects soil nitrogen (N) cycling processes both in anoxic and oxic environments. The role of Fe in soil N transformations including nitrification, mineralization, and immobilization, is influenced by redox activity, which is regulated by soil ...
X. Huang, X. Zhu-Barker, W. R. Horwath, S. J. Faeflen, H. Luo, X. Xin, X. Jiang   +6 more
doaj   +1 more source