气候变化领域集成服务门户(CCPortal): Practicing land degradation neutrality (LDN) approach in the Shazand Watershed; Iran

CCPortal

DOI	10.1016/j.scitotenv.2019.134319
	Practicing land degradation neutrality (LDN) approach in the Shazand Watershed; Iran
	Kiani-Harchegani M.; Sadeghi S.H.
发表日期	2020
ISSN	489697
卷号	698
英文摘要	Neutralizing land degradation due to overexploitation of natural resources is an acceptable strategy under developing conditions. However, this important approach has not been adequately introduced and adopted in the world. The present study therefore aimed to calculate Land Degradation Neutrality (LDN) for the Shazand Watershed with an area about 1740 km2 located in central arid and semi-arid region of Iran. The LDN status was basically assessed using three indicators, viz. land use and land cover, soil organic carbon and land productivity using Land Cover/Use Changes (LUC), Soil Organic Carbon (SOC) and Net Primary Productivity (NPP) metrics for two sub-periods during 2000 to 2016. Towards this, 140 soil samples were then taken from the top 30-cm of the soil from homogeneous units representing an area ≥ 1-km2 for four different main land uses including irrigated farms, rain fed farms, range lands, and orchards. Consequently, SOC and various soil properties such as sand, silt, clay, gravel, bulk density (BD), pH, electrical connectivity (EC), calcium carbonate (CaCO3) and nitrogen (N) were analyzed. NPP metric was also obtained using MODIS satellite images for three periods of 2000–2008, 2008–2016, and 2000–2016. The results of combination of study metrics indicated that net loss occurred in irrigated lands, rain fed lands, and range lands in the first eight-year period (2000–2008) and in contrary a balanced and stable situation in the second eight-year period (2008–2016). Overall, the LDN status in the Shazand Watershed was in a net loss situation during the period from 2000 to 2016 in irrigated lands, rain fed lands, and range lands covered areas of 12,290, 44,170 and 66,630 ha, respectively. Elsevier B.V.
英文关键词	Land degradation indicator; Land use management; Land use/Land cover indicator; Soil erosion management; Zero net land degradation
scopus关键词	Calcite; Calcium carbonate; Ecosystems; Organic carbon; Rain; Soils; Watersheds; Arid and semi-arid regions; Electrical connectivity; Land degradation; Land use and land cover; Land use/land cover; Land-use management; Net primary productivity; Soil erosion; Land use; calcium carbonate; nitrogen; organic carbon; rain; soil organic carbon; unclassified drug; land cover; land degradation; land management; land use change; net primary production; soil carbon; soil erosion; agricultural land; Article; bulk density; Iran; irrigation (agriculture); land degradation; land degradation neutrality; land use; orchard; priority journal; rangeland; sand; soil acidity; soil property; watershed; Iran; Markazi; Shazand
来源期刊	Science of the Total Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176686
作者单位	Postdoctoral Fellow, Department of Watershed Management Engineering, Faculty of Natural Resources, Tarbiat Modares University, Noor, 46417-76489, Iran; Professor (Corresponding Author), Department of Watershed Management Engineering, Faculty of Natural Resources, and Member of Agrohydrology Research Group, Tarbiat Modares University, Noor, 46417-76489, Iran
推荐引用方式 GB/T 7714	Kiani-Harchegani M.,Sadeghi S.H.. Practicing land degradation neutrality (LDN) approach in the Shazand Watershed; Iran[J],2020,698.
APA	Kiani-Harchegani M.,&Sadeghi S.H..(2020).Practicing land degradation neutrality (LDN) approach in the Shazand Watershed; Iran.Science of the Total Environment,698.
MLA	Kiani-Harchegani M.,et al."Practicing land degradation neutrality (LDN) approach in the Shazand Watershed; Iran".Science of the Total Environment 698(2020).