干旱区生态环境知识资源中心(Arid): Effect of natural and artificial afforestation reclamation on soil properties and vegetation in coastal saline silt soils

Arid

DOI	10.1016/j.catena.2020.105066
	Effect of natural and artificial afforestation reclamation on soil properties and vegetation in coastal saline silt soils
	Li, Xiaobin; Zhang, Chen
通讯作者	Zhang, C (corresponding author), Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11 A Datun Rd, Beijing 100101, Peoples R China.
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2021
卷号	198
英文摘要	YSparse vegetation and soil desertification are widespread phenomena in coastal regions due to the accumulation of excess sodium in soil, which results in degraded land quality and ecological impairment. Artificial reclamation approaches, including physical, chemical, hydro-technical, and phytoremediation techniques, have failed mainly due to freshwater shortages, high costs, and a relative lack of salt-tolerant plant types suitable for the landscape ecology. In recent years, a method based on water-salt regulation through drip irrigation combined with agronomic engineering including soil removal, layout of a gravel and sand layer, soil backfilling and land leveling, has been developed and was successfully applied in coastal saline wastelands in China. This paper presents the results of a study concerning responses of soil properties and vegetation in coastal saline wastelands reclaimed through natural and artificial afforestation using water-salt regulation based on drip irrigation. Different reclamation time spans (4-6 years) and afforestation modes (orchard, protection forest, poplar forest, and mixed forest) were compared. The results showed that after 4 years of drip irrigation, the soil bulk density decreased from 1.7 to 1.8 g/cm(3) to levels typical of farmland and field water holding capacity increased. Additionally, the soil electrical conductivity and sodium adsorption ratio decreased significantly as the severely saline soil shifted to non-saline conditions, thereby creating a suitable environment for the soil microbial community and plant seed germination. As a result, vegetation cover and plant and bacteria species diversity increased and the soil received increasing organic matter inputs; thus, developing a higher organic carbon content and carbon to nitrogen ratio. These results suggested the feasibility of using water-salt regulation through drip irrigation to develop a good quality environment in coastal saline wastelands without soil amendments, especially with a rapid reclamation process. This approach could help to arrest desertification due to salinity, aid the rehabilitation of wastelands, and thus contribute to improvements in the local environment.
英文关键词	Coastal saline wasteland Reclamation period Drip irrigation Soil properties Vegetation
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000605337000020
WOS关键词	DRIP IRRIGATION ; WATER ; CONSTRUCTION ; MECHANISMS ; TRANSPORT ; GROWTH ; 1ST
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
来源机构	中国科学院地理科学与资源研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/347785
作者单位	[Li, Xiaobin; Zhang, Chen] Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, 11 A Datun Rd, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Li, Xiaobin,Zhang, Chen. Effect of natural and artificial afforestation reclamation on soil properties and vegetation in coastal saline silt soils[J]. 中国科学院地理科学与资源研究所,2021,198.
APA	Li, Xiaobin,&Zhang, Chen.(2021).Effect of natural and artificial afforestation reclamation on soil properties and vegetation in coastal saline silt soils.CATENA,198.
MLA	Li, Xiaobin,et al."Effect of natural and artificial afforestation reclamation on soil properties and vegetation in coastal saline silt soils".CATENA 198(2021).