干旱区生态环境知识资源中心(Arid): Converted vegetation type regulates the vegetation greening effects on land surface albedo in arid regions of China

Arid

DOI	10.1016/j.agrformet.2022.109119
	Converted vegetation type regulates the vegetation greening effects on land surface albedo in arid regions of China
	Zhu, Yixuan; Zhang, Yangjian; Zheng, Zhoutao; Liu, Yaojie; Wang, Zhipeng; Cong, Nan; Zu, Jiaxing; Tang, Ze; Zhao, Guang; Gao, Jie; Sun, Yihan
通讯作者	Zhang, YJ
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2022
卷号	324
英文摘要	Land surface albedo (LSA) is a key parameter in the process of vegetation feedback to climate due to its decisive role in land surface radiation budget. However, our current knowledge on the relationship between LSA and vegetation changes is limited by one-sided attention to sole vegetation growth change or land use/land cover change (LULCC). How vegetation growth or LULCC respectively contributes to LSA change under their interactions remains poorly quantified. In this study, the arid and semi-arid areas of China (ASAC) with profound vegetation changes were selected to tackle this problem. The LSA showed a general downward trend (-0.00009 year -1) during 2000-2018 in response to ASAC's wide-range greening (0.0086 m(2)m(-2)year(-1)). Pairwise comparison analysis revealed that under the same unit of vegetation coverage change, the LSA change magnitude was contracted when grassland was converted to cultivated land or forest land, while the conversions of forest land to other vegetations led to an amplified change magnitude of LSA. Vegetation type directly leads to a difference in LSA change magnitude under greening due to their distinct canopy spectral characteristics. Grassland possesses lower LAI and its pixel-level LSA is more prone to be contaminated by background coverage, while LSA of forest land contains more vegetation canopy signal. In most areas where vegetation type converted, greening dominated LSA change with a contribution rate up to 98.14 %, except for the conversion of grassland to forest land, where LULCC accounted for about 66.38 % of LSA change. This study could improve the estimation of LSA from LAI, which is useful for optimizing vegetation-climate interaction models.
英文关键词	Leaf area index Land use/land cover change Ecological engineering projects Canopy structure Reflectance
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000861215800002
WOS关键词	LEAF-AREA INDEX ; CLIMATE-CHANGE ; GRASSLAND DEGRADATION ; SEASONAL-VARIATION ; TEMPORAL DYNAMICS ; CANOPY STRUCTURE ; FOREST ALBEDO ; CARBON ; COVER ; WATER
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/391574
推荐引用方式 GB/T 7714	Zhu, Yixuan,Zhang, Yangjian,Zheng, Zhoutao,et al. Converted vegetation type regulates the vegetation greening effects on land surface albedo in arid regions of China[J],2022,324.
APA	Zhu, Yixuan.,Zhang, Yangjian.,Zheng, Zhoutao.,Liu, Yaojie.,Wang, Zhipeng.,...&Sun, Yihan.(2022).Converted vegetation type regulates the vegetation greening effects on land surface albedo in arid regions of China.AGRICULTURAL AND FOREST METEOROLOGY,324.
MLA	Zhu, Yixuan,et al."Converted vegetation type regulates the vegetation greening effects on land surface albedo in arid regions of China".AGRICULTURAL AND FOREST METEOROLOGY 324(2022).