期刊
CLEAN-SOIL AIR WATER
卷 41, 期 6, 页码 581-586出版社
WILEY
DOI: 10.1002/clen.201200391
关键词
Ecosystem functionality; Global climate change; Sesbania; Tidal-flat reclamation; Wetland restoration
类别
资金
- 'Research and Demonstration on Integrated Technologies and Models of Efficient Agricultural Utilisation of Salt-affected Land in China' [200903001-5]
- Ministry of Agriculture in China
- One Hundred-Talent Plan of Chinese Academy of Sciences (CAS)
- Project of Shandong Provincial Technology Development Plan [2010GSF10208]
- CAS/SAFEA International Partnership Program for Creative Research Teams
- National Natural Science Foundation of China [41171216, 41001137]
- Science & Technology Development Plan of Shandong Province [2010GSF10208]
- Science & Technology Development Plan of Yantai City [2011016, 20102450]
- Strategic Priority Research Program of the Chinese Academy of Sciences [XDA01020304]
- Yantai Double hundred Talent Plan [XY-003-02]
Tidal flats, which are important reserved land resources, have a vital role in climate change. To evaluate the contribution of coastal saline soils to carbon sequestration, field tests were performed over a 3 year period at the Dafeng Wanggang Experimental Station in Jiangsu Province, China. Six artificial agro-ecosystems, including wasteland (WL), freshwater fish culture (FC), Sesbania culture (SC), barley culture (BC), mixed culture of fish and Sesbania (MCFS) and mixed culture of fish and barley (MCFB), were established according to developmental processes of coastal saline soils. At the initial stage of tidal flat reclamation, the soil organic carbon (SOC) increased by 59.4tha-1 in the FC system during 3 years, which was much higher than that of the WL system (40.7tha-1). When the tidal flats evolved into high saline soils, the MCFS system sequestered SOC more effectively than the FC or SC systems with increases of 53.1, 16.9 and 8.3tha-1, respectively. Subsequently, in the low saline soils, the maximum soil carbon sequestration was obtained in the MCFB system (35.8tha-1) followed by the BC (17.5tha-1) and FC (13.5tha-1) systems. Therefore, proper development of tidal flats to farmland and the subsequent establishment of optimised artificial agro-ecosystems make an important contribution to carbon sequestration and climate changes in coastal areas.
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