Effects of different sediment type and burial depth on growth traits and biomass accumulation of Spartina anglica

LIU Lin1 AN Shuqing2 ZHI Yingbiao3 ZHANG Mingxiang1 LI Hongli1

(1.School of Nature Conservation, Beijing Forestry University, Beijing 100083)
(2.School of Life Sciences, Nanjing University, Nanjing 210093)
(3.College of Environment and Resources, Inner Mongolia University, Hohhot, China 010021)

【Abstract】Soils in salt marsh ecosystems have been undergoing certain changes including those related to sediment types and burial depths due to tidal activity and a variety of biotic factors. The changes in sediment type affect water-retaining properties, permeability and organic content while those in burial depth alter soil humidity, nutrition content, oxygen content, light intensity and temperature. Although many previous studies have focused on the effects of soil properties on plant growth and reproduction, few have explicitly tested the impacts of sediment type and burial depth on plants in salt marsh ecosystems. The exotic species Spartina anglica found in coastal China has been experiencing increased mortality over the past decades, however the mechanism of this mortality remains unclear. This study mainly focused on the effects of sediment type and burial depth on growth traits and biomass accumulation of S. anglica and was conducted under greenhouse conditions. The experiment included two types of sediments with clay and clay-sand mixtures (the volume of 1:1). Furthermore, four treatments were established with burial depths from 0 cm to one quarter of the plant height, one half of the plant height and three quarters of the plant height. Results indicated that clay increased leaf area, number of leaves, number of rhizomes, total length of rhizomes, rhizome biomass and aboveground biomass, while the clay-sand mixture led to an increase in number of ramets, total mass, underground biomass and root biomass. All the measures, except for leaf area, peaked at one half of the plant height burial treatment among all treatments. Overall, the burial depth at one half of the plant height in clay was the most suitable combination for S. anglica. The results indicate that changes in sediment properties and subsequent changes in burial depth for S. anglica may assist with management of its populations over the species range.

【Keywords】 salt marsh; Spartina anglica; population invasion and decline; biomass accumulation;


【Funds】 Special Funds for Basic Scientific Research Operations of Central Universities (2015ZCQ-BH-01) National Natural Science Foundation of China (31470475) Special Project for Key Techniques of Biosafety, National Key Reseach and Development Program of China (2016YFC1201100)

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(Translated by CHEN T)


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This Article


CN: 11-2107/TM

Vol 36, No. 24, Pages 6596-6605+6911

December 2016


Article Outline



  • 1 Materials and methods
  • 2 Results
  • 3 Discussion
  • References