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- Title
碳氮稳定同位素技术在青藏高原高寒草甸 生态系统研究中的应用: 进展与展望.
- Authors
周春丽; 李以康; 曹广民; 朋措吉; 宋明华; 徐兴良; 周华坤; 林 丽
- Abstract
Carbon and nitrogen stable isotopic technique has been widely used in research of glassland ecosystems. Here, we summarized studies using carbon and nitrogen stable isotopes in the alpine meadow ecosystem on the Qinghai-Tibet Plateau. Firstly, we reviewed the environmental factors which influenced carbon and nitrogen isotope composition (δ13C and δ15 N) of plants and soils in alpine meadow, such as altitude, moisture, fertilization, grassland degradation, and temperature. The values of plant δ13C were positively correlated with altitude, and negatively correlated with atmospheric pressure, grassland degradation and temperature. The relationship between plant δ13 C and precipitation was non-linear. The values of soil δ13C were positively correlated with altitude and grassland degradation. The values of plant δ15 N were positively correlated with soil moisture and fertilization, and negatively correlated with grassland degradation. Secondly, we reviewed the current application and progresses of 13C and 15N in the identification of plant photosynthetic type, water use, nutrient transport along food chain and carbon and nitrogen cycle in the alpine meadow. Finally, we prospected the 13C and 15 N isotopes application in researches on soil organic carbon and soil respiration in the alpine meadow, transitions of vegetation type, and climate change, soil N20 trace, exploration of vegetation degradation, identification of the origin of Tibetan medicine and animal food, etc. 13C and 15 N isotopes could be widely used and play important roles in researches on the alpine ecosystems.
- Subjects
MOUNTAIN ecology; MOUNTAIN meadows; MOUNTAIN soils; NITROGEN isotopes; SOIL respiration; NITROGEN cycle; GRASSLAND soils; HETEROTROPHIC respiration
- Publication
Yingyong Shengtai Xuebao, 2020, Vol 31, Issue 10, p3568
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.202010.026