Back to Search
Start Over
Reactive nitrogen releases and nitrogen footprint during intensive vegetable production affected by partial human manure substitution
- Source :
- Environmental Science and Pollution Research. 29:19572-19582
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- Evaluating the sustainability of vegetable production is crucial to secure future food supply. A 2-year field study of four different vegetable crops was performed to investigate the effects of inorganic fertilizer and human manure at different ratios on vegetable yields, reactive gaseous nitrogen emissions (GNrEs), reactive nitrogen (Nr) footprint, and net ecosystem economic income (NEEI) by using life cycle analysis. Four fertilization strategies were studied, including CK (no fertilization); CF (inorganic fertilization); CHF1 (human manure /inorganic fertilizer, N ratio = 1:7); and CHF2 (human manure /inorganic fertilizer, N ratio = 1:3). Results showed that compared with CF treatment, both CHF1 and CHF2 treatments increased the N2O + NO emissions by 11.8% and 32.4% on average, while decreased the vegetable yields by 6.7% and 7.4%, respectively. Moreover, the addition of human manure increased the proportions of Nr footprint by 6.6% (CHF1) and 2.9% (CHF2) in comparison with CF treatment. However, although CHF2 treatment significantly increased the values of GNrEs and reactive gaseous nitrogen intensity (GNrI) by 8.4% and 12.5%, respectively, in relation to those in CF treatment, it still increased farmers’ income by 16,404 CNY ha−1. These findings suggest that although human manure incorporation could not mitigate Nr releases, the appropriate ratio of inorganic fertilizer and human manure (CHF2) is able to improve net economic income (NEI) and NEEI during intensive vegetable production. Nevertheless, it should be further explored about the relationship between combinatorial treatment of inorganic fertilizer and human manure on Nr release mitigation in intensive vegetable production.
- Subjects :
- China
Reactive nitrogen
Nitrogen
Health, Toxicology and Mutagenesis
Nitrous Oxide
chemistry.chemical_element
Agriculture
General Medicine
Vegetable crops
Pollution
Manure
Soil
Animal science
Human fertilization
chemistry
Vegetables
Humans
Environmental Chemistry
Production (economics)
Ecotoxicology
Ecosystem
Fertilizers
Subjects
Details
- ISSN :
- 16147499 and 09441344
- Volume :
- 29
- Database :
- OpenAIRE
- Journal :
- Environmental Science and Pollution Research
- Accession number :
- edsair.doi.dedup.....3ec4889b941a7dfcdda1ea9e3240544c