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- Title
人工恢复与自然恢复模式下苔草草丘生态特征比较.
- Authors
齐 清; 刘晓伟; 佟守正; 张冬杰; 张洺也; 安 雨; 王雪宏
- Abstract
We compared the ecological characteristics of tussock individuals and populations under-going natural and artificial restoration in Carex tussock wetlands in the Sun Island in Harbin and identified the relationships between the growth of Carex tussock and environmental factors. Results showed that there were obvious seasonal dynamics in morphological characteristics of C. appendiculata. Tussocks grew rapidly from May to June, peaked in June, and then decreased steadily from July to August. There were significant differences in ecological characteristics of Carex tussocks between natural and artificial restorations. The morphological characteristics of individual tussock, including leaf area, leaf width, fresh weight per ramet, dry weight per ramet, and the hummock shape indicators (hummock height, diameter, volume and surface area) in natural restored area were significantly higher than those in artificial transplanting area. For the Carex tussock community, tussock density, coverage and biomass in natural restoration area were significantly lower than those in artificial transplanting area. Soil water content, water depth and hummock spacing in natural restoration area were significantly higher than those in artificial restoration area, which facilitated the formation and development of individual tussock. Higher transplanting density was the main factor leading to higher density, coverage, and biomass in artificial restoration area. Our results suggested that the distribution characteristics of tussocks in natural restoration area should be taken into account in future restoration and protection works. Appropriate adjustment of the distance between hummock (54.22-117.89 cm) and population density (1.9-3.1 ind·m-2 ), as well as proper water recharge measures in spring in arid areas to regulate soil water content and water depth, would be conducive to promoting the growth and rapid recovery of Carex tussock, which would maintain the long-term health and stability of tussock wetland.
- Subjects
HARBIN (China); SOIL moisture; NATURE reserves; WATER depth; WETLAND restoration; WELL water; LEAF area; WETLAND soils; WETLANDS
- Publication
Yingyong Shengtai Xuebao, 2019, Vol 30, Issue 11, p3707
- ISSN
1001-9332
- Publication type
Article
- DOI
10.13287/j.1001-9332.201911.008