Topics

Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau.

08:00 EDT 9th September 2019 | BioPortfolio

Summary of "Effects of intercropping mulch on the content and composition of soil dissolved organic matter in apple orchard on the loess plateau."

Dissolved organic matter (DOM) is an important parameter that reflects soil fertility and quality. In this study, the effects of intercropping perennial ryegrass and straw mulch on the content, composition and spectral characteristics of soil DOM in orchards in arid and semi-arid areas were investigated by three-dimensional fluorescence excitation-emission matrix (EEM) combined with parallel factor analysis (PARAFAC). Three treatments were applied in a 6-year-old apple orchard on the Loess Plateau: (1) clean tillage (CT); (2) intercropping perennial ryegrass mulch (RE); (3) intercropping straw mulch (CS). Soil samples (0-10, 10-20, 20-40, 40-60, 60-80, 80-100 cm) were collected from different treatments. The total soil organic carbon (SOC) and dissolved organic carbon (DOC) content were ranked as CS> RE> CT, and decreased with soil depth. In addition, the vertical distribution of DOC with different soil depth was caused by organic matter input but not leaching. Three humic-like components and two protein-like components were identified by EEM-PARAFAC. Fluorescence spectra showed that humic-like compounds were the dominant fractions in soil DOM in the CS treatment. Fluorescence Index (FI) indicated that the proportion of plant residues and soil organic matter derived DOM ranked as CT> RE> CS and gradually decreased with soil depth. Our results highlight the key role of orchard intercropping mulch in improving the content and compositions of soil DOM through different forms of organic inputs and provide new theoretical support for the evaluation of soil fertility in orchards.

Affiliation

Journal Details

This article was published in the following journal.

Name: Journal of environmental management
ISSN: 1095-8630
Pages: 109531

Links

DeepDyve research library

PubMed Articles [22102 Associated PubMed Articles listed on BioPortfolio]

Integrated use of straw mulch with nitrogen fertilizer improves soil functionality and soybean production.

Mulching can effectively maintain and improve soil health and functionality. The mechanisms, however, have not been fully elucidated. Therefore, the effects of temperature on the biogeochemical proper...

Effects of iron(III) reduction on organic carbon decomposition in two paddy soils under flooding conditions.

Iron oxidation and reduction have important effects on soil organic carbon conversion in paddy soil during flooding and dry conditions. This study selected two paddy soil samples, one from the city of...

Effect of soil organic matter, soil pH, and moisture content on solubility and dissolution rate of CuO NPs in soil.

The objectives of this research were to quantify the impact of organic matter content, soil pH and moisture content on the dissolution rate and solubility of copper oxide nanoparticles (CuO NPs) in so...

Effect of swine biogas slurry application on soil dissolved organic matter (DOM) content and fluorescence characteristics.

The application of biogas slurry as an organic fertilizer is a promising method for utilizing breeding manure wastewater. At present, the impact of biogas slurry on the properties of organic matter in...

Effects of dissolved organic carbon on desorption of aged phenanthrene from contaminated soils: A mechanistic study.

Dissolved organic carbon (DOC) has a major influence upon sorption/desorption and transport of hydrophobic organic contaminants (HOCs) in soil environments. However, the molecular mechanisms of DOC so...

Clinical Trials [2710 Associated Clinical Trials listed on BioPortfolio]

Content, Bioavailability and Health Effects of Trace Elements and Bioactive Components in Organic Agricultural Systems

Trace elements, bioactive secondary metabolites and vitamins are among the most important quality parameters in plants. Yet, very little information is available on their content, bioavail...

Impact of Exposure to Persistent Organic Pollutants During Pregnancy on the Composition of Breast Milk and Consequences on the Newborn

Epidemiological studies link early exposure to persistent organic pollutants (POPs) with health consequences in the newborn. Experimental studies have shown the impact of POPs on the gut m...

Organic Diet Intervention in Primary School Children

The study aims to evaluate the hypothesized benefits of a systematic organic diet for children, over those of a conventional diet. The specific objectives of this study are to: i) Demonstr...

Vaping High vs. Low Nicotine E-Liquid

This study will examine the effects of electronic cigarette e-liquid nicotine content in a randomized, crossover clinical and behavioral pharmacology study of experienced adult e-cigarette...

Effects of Empagliflozin on Liver Fat Content, Energy Metabolism and Body Composition in Patients With Type 2 Diabetes

The effects of empagliflozin treatment on hepatocellular lipid content, liver energy metabolism and body composition will be investigated in a multicentre, prospective, placebo-controlled,...

Medical and Biotech [MESH] Definitions

A form of elephantiasis caused by soil particles which penetrate the skin of the foot. It is limited to tropical regions with soils of high volcanic content.

The circulation of nitrogen in nature, consisting of a cycle of biochemical reactions in which atmospheric nitrogen is compounded, dissolved in rain, and deposited in the soil, where it is assimilated and metabolized by bacteria and plants, eventually returning to the atmosphere by bacterial decomposition of organic matter.

A noninvasive method for assessing BODY COMPOSITION. It is based on the differential absorption of X-RAYS (or GAMMA RAYS) by different tissues such as bone, fat and other soft tissues. The source of (X-ray or gamma-ray) photon beam is generated either from radioisotopes such as GADOLINIUM 153, IODINE 125, or Americanium 241 which emit GAMMA RAYS in the appropriate range; or from an X-ray tube which produces X-RAYS in the desired range. It is primarily used for quantitating BONE MINERAL CONTENT, especially for the diagnosis of OSTEOPOROSIS, and also in measuring BONE MINERALIZATION.

A genus of saprobic mushrooms in the family Bolbitiaceae that grow in grass, dung, garden mulch, or in woods.

Chemical compounds which yield hydrogen ions or protons when dissolved in water, whose hydrogen can be replaced by metals or basic radicals, or which react with bases to form salts and water (neutralization). An extension of the term includes substances dissolved in media other than water. (Grant & Hackh's Chemical Dictionary, 5th ed)

Quick Search


DeepDyve research library

Relevant Topics

Fertility
Fertility is the ability of a couple to conceive, but can related to specifically the man or woman. Various reasons can cause a couple to be infertile, and due to the strong desire of these patients to have <!--LGfEGNT2Lhm-->children, a range of ...

Nutrition
Within medicine, nutrition (the study of food and the effect of its components on the body) has many different roles. Appropriate nutrition can help prevent certain diseases, or treat others. In critically ill patients, artificial feeding by tubes need t...


Searches Linking to this Article