干旱区生态环境知识资源中心(Arid): Investigating net primary production in climate regions of central Zagros, Iran, using MODIS and meteorological data

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DOI	10.3354/cr01643
	Investigating net primary production in climate regions of central Zagros, Iran, using MODIS and meteorological data
	Yaghmaei, Leila; Jafari, Reza; Soltani, Saeid
通讯作者	Jafari, R (corresponding author), Isfahan Univ Technol, Dept Nat Resources, Esfahan 841568311, Iran.
来源期刊	CLIMATE RESEARCH
ISSN	0936-577X
EISSN	1616-1572
出版年	2021
卷号	83 页码:173-186
英文摘要	Rangeland production is sensitive to climate conditions. In this study, we monitored actual and potential production in the climate zones of Chaharmahal and Bakhtiari province in central Zagros, Iran, from 2000-2016. Net primary production (NPP), light use efficiency (LUE) and rain use efficiency (RUE) were extracted from climatic and MODIS satellite data using the Carnegie-Ames-Stanford approach (CASA) and Miami models. The accuracy of the modeled NPP maps was assessed using regression analysis, based on field data collected at 750 sites under different rangeland conditions. The spatial distribution of NPP and RUE indicated that annual production and photosynthetic efficiency in degraded rangelands with poor and very poor conditions have decreased compared to those of moderate-good classes. The highest relationship between the field and modeled NPP was associated with the Astragal us spp.-Ferula spp. (R-2 = 0.865, p < 0.001) in the humid and cold climate zone with good rangeland conditions while the lowest was observed in the annual grasses-annual forbs (R-2 = 0.198, p < 0.001) vegetation type with very poor rangeland conditions within the semi-arid and cold climate zone. Furthermore, the highest and lowest NPP values were observed in the Daphne mucronata-Prangos ferulacea (48.38 g C m(-2) yr(-1)) and annual grasses-annual forbs (3.42 g C m(-2) yr(-1)) vegetation types with LUE values of 0.13 and 0.02 g C MJ(-1) within the humid and cold and the semi-humid and cold climate zones, respectively. According to these findings, remote sensing-based differences between actual and potential NPP can be used as a valuable tool for identification of human impacts on broad rangeland ecosystems.
英文关键词	Climate type Vegetation type Rangeland production Rangeland condition Satellite imagery
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000665454300013
WOS关键词	LAND-COVER CHANGE ; TERRESTRIAL ECOSYSTEMS ; USE EFFICIENCY ; DROUGHT ; IMPACT ; CHINA ; NDVI ; NPP ; VEGETATION ; AREAS
WOS类目	Environmental Sciences ; Meteorology & Atmospheric Sciences
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/367846
作者单位	[Yaghmaei, Leila; Jafari, Reza; Soltani, Saeid] Isfahan Univ Technol, Dept Nat Resources, Esfahan 841568311, Iran
推荐引用方式 GB/T 7714	Yaghmaei, Leila,Jafari, Reza,Soltani, Saeid. Investigating net primary production in climate regions of central Zagros, Iran, using MODIS and meteorological data[J],2021,83:173-186.
APA	Yaghmaei, Leila,Jafari, Reza,&Soltani, Saeid.(2021).Investigating net primary production in climate regions of central Zagros, Iran, using MODIS and meteorological data.CLIMATE RESEARCH,83,173-186.
MLA	Yaghmaei, Leila,et al."Investigating net primary production in climate regions of central Zagros, Iran, using MODIS and meteorological data".CLIMATE RESEARCH 83(2021):173-186.