干旱区生态环境知识资源中心(Arid): Using Cs-137 and Pb-210(ex) measurements to explore the effectiveness of soil conservation measures in semi-arid lands: a case study in the Kouhin region of Iran

Arid

DOI	10.1007/s11368-018-2205-y
	Using Cs-137 and Pb-210(ex) measurements to explore the effectiveness of soil conservation measures in semi-arid lands: a case study in the Kouhin region of Iran
	Khodadadi, Maral 1; Mabit, Lionel 2; Zaman, Mohammad 2; Porto, Paolo 3,4; Gorji, Manouchehr 5
通讯作者	Porto, Paolo
来源期刊	JOURNAL OF SOILS AND SEDIMENTS
ISSN	1439-0108
EISSN	1614-7480
出版年	2019
卷号	19 期号:4 页码:2103-2113
英文摘要	Purpose One of the most fragile agro-ecosystems in Iran is represented by dry farming lands on steep hillslopes that occupy ca. 54% of the national agricultural lands. Therefore, in order to reduce loss of fertile soil from these lands, it is important to apply effective soil conservation strategies. This study used cesium-137 (Cs-137) and excess lead-210 (Pb-210(ex)) measurements to assess the effectiveness of soil conservation practices in controlling soil erosion in Kouhin, Qazvin Province of Iran. Materials and methods Soil samples were collected from two adjacent hillslopes with and without conservation agriculture practices. The managed site benefited from conservation practices, including controlled grazing, terraces, and contour farming for 50years. The unmanaged site was under cultivation without agricultural conservation practices. At the managed site, both Cs-137 and Pb-210(ex) activities were measured. Only Cs-137 activity was measured for the unmanaged site. Results and discussion Conservation practices performed at the managed site were effective in minimizing soil erosion, i.e., net soil erosion rates provided by Cs-137 measurements were only 4.6Mgha(-1)year(-1) at the managed site, compared to 12Mgha(-1)year(-1) for the unmanaged site. By using the Pb-210(ex) approach, net soil loss and sediment delivery ratio in the managed site were 12.3Mgha(-1)year(-1) and 60%, respectively. Conclusions Soil redistribution magnitudes established from Cs-137 inventories are associated with a period extending from 1963 to the time of sampling, while those obtained from Pb-210(ex) measurements are related to the past 100years. However, Pb-210(ex) measurements are expected to be more sensitive to erosive events that occurred during the last 15 to 20years and this could reflect the higher estimate of erosion rate provided by this radionuclide for the managed site. The increasing trend seems to suggest a possibility that the higher soil losses estimated by the Pb-210(ex) measurements are a result of increasing climate variability during the last two decades. However, further investigation would be needed to confirm this hypothesis.
英文关键词	Cs-137 Pb-210(ex) Soil conservation Soil erosion
类型	Article
语种	英语
国家	Iran ; Austria ; Italy
收录类别	SCI-E
WOS记录号	WOS:000462500000043
WOS关键词	EROSION RATES ; FALLOUT RADIONUCLIDES ; REDISTRIBUTION RATES ; SEDIMENT BUDGET ; INVESTIGATE ; CATCHMENT ; MODELS ; TRACER ; DEGRADATION ; INVENTORY
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217325
作者单位	1.NSTRI, Nucl Agr Res Sch, Karaj, Iran; 2.IAEA, Joint FAO IAEA Div, Dept Nucl Sci & Applicat, Soil & Water Management & Crop Nutr Subprogramme, Vienna, Austria; 3.Univ Mediterranea, Dipartimento Agr, I-89123 Reggio Di Calabria, Italy; 4.CNR, Ist Sistemi Agr & Forestali Mediterraneo, Sez Ecol & Idrol Forestale, I-87036 Arcavacata Di Rende, CS, Italy; 5.Univ Tehran, Dept Soil Sci, Karaj, Iran
推荐引用方式 GB/T 7714	Khodadadi, Maral,Mabit, Lionel,Zaman, Mohammad,et al. Using Cs-137 and Pb-210(ex) measurements to explore the effectiveness of soil conservation measures in semi-arid lands: a case study in the Kouhin region of Iran[J],2019,19(4):2103-2113.
APA	Khodadadi, Maral,Mabit, Lionel,Zaman, Mohammad,Porto, Paolo,&Gorji, Manouchehr.(2019).Using Cs-137 and Pb-210(ex) measurements to explore the effectiveness of soil conservation measures in semi-arid lands: a case study in the Kouhin region of Iran.JOURNAL OF SOILS AND SEDIMENTS,19(4),2103-2113.
MLA	Khodadadi, Maral,et al."Using Cs-137 and Pb-210(ex) measurements to explore the effectiveness of soil conservation measures in semi-arid lands: a case study in the Kouhin region of Iran".JOURNAL OF SOILS AND SEDIMENTS 19.4(2019):2103-2113.