Results 1 to 10 of about 11,656,595 (311)

The responses of soil organic carbon and total nitrogen to chemical nitrogen fertilizers reduction base on a meta-analysis. [PDF]

Sci Rep, 2022
Soil organic carbon (SOC), total nitrogen (TN), and their ratio (C:N) play important roles in preserving soil fertility, and their values are closely related to fertilizer use.
Li C, Aluko OO, Yuan G, Li J, Liu H.
europepmc   +2 more sources

Total Nitrogen Determination by a Spectrophotometric Method. [PDF]

Methods in molecular biology, 2019
Being able to measure total nitrogen (TN) is important for following the nitrogen budget. In this chapter, we present the spectrophotometric method we use for determining TN. The method relies on oxidation and reduction steps, involving persulfate digestion of nitrogen compounds into nitrate followed by spectrophotometric determination.
J. Koistinen, Mervi Sjöblom, K. Spilling   +2 more
semanticscholar   +4 more sources

Toward the improvement of total nitrogen deposition budgets in the United States. [PDF]

Sci Total Environ, 2019
Frameworks for limiting ecosystem exposure to excess nutrients and acidity require accurate and complete deposition budgets of reactive nitrogen (Nr).
Walker JT, Beachley G, Amos HM, Baron JS, Bash J, Baumgardner R, Bell MD, Benedict KB, Chen X, Clow DW, Cole A, Coughlin JG, Cruz K, Daly RW, Decina SM, Elliott EM, Fenn ME, Ganzeveld L, Gebhart K, Isil SS, Kerschner BM, Larson RS, Lavery T, Lear GG, Macy T, Mast MA, Mishoe K, Morris KH, Padgett PE, Pouyat RV, Puchalski M, Pye HOT, Rea AW, Rhodes MF, Rogers CM, Saylor R, Scheffe R, Schichtel BA, Schwede DB, Sexstone GA, Sive BC, Sosa Echeverría R, Templer PH, Thompson T, Tong D, Wetherbee GA, Whitlow TH, Wu Z, Yu Z, Zhang L.   +49 more
europepmc   +2 more sources

Soil organic carbon and total nitrogen pools in permafrost zones of the Qinghai-Tibetan Plateau. [PDF]

Sci Rep, 2018
There are several publications related to the soil organic carbon (SOC) on the Qinghai-Tibetan Plateau (QTP). However, most of these reports were from different parts of the plateau with various sampling depth.
Zhao L, Wu X, Wang Z, Sheng Y, Fang H, Zhao Y, Hu G, Li W, Pang Q, Shi J, Mo B, Wang Q, Ruan X, Li X, Ding Y.   +14 more
europepmc   +2 more sources

Hyperspectral Imaging Analysis for the Classification of Soil Types and the Determination of Soil Total Nitrogen. [PDF]

Sensors (Basel), 2017
Soil is an important environment for crop growth. Quick and accurately access to soil nutrient content information is a prerequisite for scientific fertilization.
Jia S, Li H, Wang Y, Tong R, Li Q.
europepmc   +2 more sources

Change in Nitrogen Content in Golden Pear Trees in Response to Irrigation and Nitrogen Fertilization

Guan'gai paishui xuebao, 2023
【Background and objective】 Gold pear is a main fruit in northern China and its production relies on irrigation and fertilization. The purpose of this paper is to study the effects of different combinations of irrigation and nitrogen-fertilization on ...
LIU Ya’nan, BAI Meijian, LI Yinong, ZHANG Baozhong, SHI Yuan, WU Xianbing, SHI Licheng   +6 more
doaj   +1 more source

Efficacy of a Sedimentation-boosting and Purifying Device for Decontaminating Pollutants in Surface Runoff from Paddy Field

Guan'gai paishui xuebao, 2021
【Background】 The catchment of Tai lake is one of the most important rice production basins in China and rice-wheat rotation is its dominant cultivation. However, excessive use of water and fertilizers has led to nutrient loss and eutrophication.
FU Zishi, SUN Huifeng, ZHOU Sheng, ZHANG Jining, ZHANG Xianxian, WANG Cong   +5 more
doaj   +1 more source

Implication of Macroalgal Bloom to Soil Organic Carbon Stock in Seagrass Meadows - A Case Study in South Hainan, China

Frontiers in Marine Science, 2022
The adverse impact of macroalgal blooms associated with nutrient enrichment on seagrass habitats and carbon storage potential is an ecological concern. In the present study, the soil carbon stock and sources were compared between a seagrass meadow where ...
Shunyang Chen, Shunyang Chen, Shiquan Chen, Bin Chen, Bin Chen, Bin Chen, Zhongjie Wu, Wenshuo An, Wenshuo An, Lizhen Luo, Jing Wang, Limei Xie, Jing Zhang, Guangcheng Chen, Guangcheng Chen, Guangcheng Chen   +15 more
doaj   +1 more source

Water Quality Variability and Related Factors along the Yangtze River Using Landsat-8

Remote Sensing, 2021
Chlorophyll-a (Chl-a), total nitrogen (TN), and total phosphorus (TP) are important indicators to evaluate water environmental quality. Monitoring water quality and its variability can help control water pollution.
Yang He, Shuanggen Jin, Wei Shang
doaj   +1 more source

Features of profile distribution and nutrient stocks in drained peat soils

Трансформация экосистем, 2023
The profile distribution and stocks of organic carbon, total nitrogen and phosphorus, as well as C/N ratio, pHKCl and bulk density were studied on drained peat array in soils of various structure and thickness (southern Karelia, Fennoscandia) to assess ...
Inna A. Dubrovina
doaj   +1 more source