Conversion of Slope Cropland to Terrace Influences Soil Organic Carbon and Nitrogen Stocks on the Chinese Loess Plateau

doi:10.15244/pjoes/122166

	Conversion of Slope Cropland to Terrace Influences Soil Organic Carbon and Nitrogen Stocks on the Chinese Loess Plateau
	Qiang, Minmin 2,4; Gao, Jian'en 1,2,3,4,5; Han, Jianqiao 2,3
刊名	POLISH JOURNAL OF ENVIRONMENTAL STUDIES
	2021
卷号	30 期号:1 页码:315-325
关键词	slope cropland terrace soil organic carbon nitrogen soil properties
ISSN号	1230-1485
DOI	10.15244/pjoes/122166
通讯作者	Gao, Jian'en(gaojianen@126.com)
英文摘要	The change of soil organic carbon (SOC) and nitrogen is vital to farmland ecosystem sustainability after conversion of slope cropland to terrace. Terraces of different ages were selected as subjects to investigate the evolution rule of SOC and nitrogen on the Loess Plateau. The results indicated that SOC density increased from 0.8 kg/m(2) to 1.2 kg/m(2) in 30-year terrace in 0-20 cm soil layer and total nitrogen (TN) density increased by 75%. SOC and TN density increased significantly at the initial stage of terraces, and the average accumulation rates were 317.7 and 37.4 kg/(ha.a), respectively. SOC and TN density have exceeded the levels in slope cropland in 10-year terrace and greatly improved (by 74.0% and 107%, respectively) after 30 years,. The greatest soil nutrients and enzyme activity occurred after 30 years. SOC positively related to TN, clay and enzyme activity, while the relationships between SOC and bulk density, pH, and EC were negative. Nitrogen was the major limiting factor of SOC sequestration. Soil environment of long-term use terrace would improve the ability of soil to collect carbon and nitrogen. Terrace has great significance to cropland quality improvement, food security and greenhouse gas emission reduction on the Loess Plateau.
资助项目	National Key R&D Program of China[2017YFC0504703] ; National Natural Science Foundation of China[41877078] ; National Natural Science Foundation of China[41371276] ; Basic Research Program in Natural Sciences of Shaanxi Province, China[2016ZDJC-20] ; ShaanXi Province Science and Technology Innovation Project ; Knowledge Innovation Program of the Chinese Academy of Sciences[A315021615]
WOS关键词	LAND-USE ; WATER CONSERVATION ; CLIMATE-CHANGE ; TILLAGE ; STOICHIOMETRY ; CATCHMENT ; DYNAMICS ; EROSION ; PRODUCTIVITY ; VEGETATION
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	HARD
WOS记录号	WOS:000581930900029
资助机构	National Key R&D Program of China ; National Natural Science Foundation of China ; Basic Research Program in Natural Sciences of Shaanxi Province, China ; ShaanXi Province Science and Technology Innovation Project ; Knowledge Innovation Program of the Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/156783]
专题	中国科学院地理科学与资源研究所
通讯作者	Gao, Jian'en
作者单位	1.Minist Educ, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 3.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 4.Minist Water Resources, Res Ctr Soil & Water Conservat, Yangling 712100, Shaanxi, Peoples R China 5.Chinese Acad Sci, Res Ctr Soil & Water Conservat & Ecol Environm, Yangling 712100, Shaanxi, Peoples R China
推荐引用方式 GB/T 7714	Qiang, Minmin,Gao, Jian'en,Han, Jianqiao. Conversion of Slope Cropland to Terrace Influences Soil Organic Carbon and Nitrogen Stocks on the Chinese Loess Plateau[J]. POLISH JOURNAL OF ENVIRONMENTAL STUDIES,2021,30(1):315-325.
APA	Qiang, Minmin,Gao, Jian'en,&Han, Jianqiao.(2021).Conversion of Slope Cropland to Terrace Influences Soil Organic Carbon and Nitrogen Stocks on the Chinese Loess Plateau.POLISH JOURNAL OF ENVIRONMENTAL STUDIES,30(1),315-325.
MLA	Qiang, Minmin,et al."Conversion of Slope Cropland to Terrace Influences Soil Organic Carbon and Nitrogen Stocks on the Chinese Loess Plateau".POLISH JOURNAL OF ENVIRONMENTAL STUDIES 30.1(2021):315-325.