干旱区生态环境知识资源中心(Arid): Biological crust in sand and dust storm source areas of Asia and its impact on dust emission

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	Biological crust in sand and dust storm source areas of Asia and its impact on dust emission
	Zhang Jian; Zhou Chunhong; Gui Hailin; Zhang Xiaoye
来源期刊	气候变化研究进展
ISSN	1674-9278
出版年	2021
卷号	12 期号:3 页码:1674-9278
英文摘要	Even though the biological crusts are critical to dust emissions, no sand and dust forecast model have considered the impacts of the biological crust in dust emission scheme. This situation mainly comes from two scientific difficulties: there is no large scale regional biological crust data available that can be used in the forecast model; there is no quantification of how biological crusts impact on sand emission. In this way, we studied the distribution of biological soil crust in sand and dust storm source areas of Central and East Asia using Moderate Resolution Imaging Spectroradiometer satellite surface reflectance data collected in 2000-2019 to determine its potential impact on dust emission according to two empirical schemes. We further evaluated the relationships between soil crust coverage, roughness length, and dust emission to study SDS source areas. We found that biological crust is widely distributed in SDS source areas of Central and East Asia, with coverage rates of 19.8% in Central Asian deserts, 23.1% in the Gobi Desert, and 17.3%-32.8% in Chinese deserts ( p > 0.05). Cyanobacteria and lichen coverage has increased in Chinese deserts, reflecting the recent impacts of the Project of Returning Farmland to Grassland and Farmland to Forests. However, biological soil crust coverage has not increased in Central Asian deserts or the Gobi Desert, and that in Central Asian deserts continues to decrease, demonstrating the complexity of the combined effects of human activities and climate change on its distribution. Biological soil crust increased the roughness length of Central and East Asian SDS source areas by 0.14e0.62 mm. The suppression of dust emission due to biological soil crust did not change among years during the study period. The horizontal and vertical dust flux inhibition coefficient (DFIC) were 2.0e11.0 and 1.7-2.9 ( p > 0.05), respectively, clearly showing a suppressive effect. Improvement of the ecological environment in some deserts can lead to the ability of these crusts to inhibit dust erosion errors that must be considered in the dust emission scheme for areas where crust coverage has improved.
英文关键词	Biological soil crust Dust emission Satellite retrieval Sand and dust storm source Central and East Asia
类型	Article
语种	英语
国家	中国
开放获取类型	gold
收录类别	CSCD
WOS类目	Science & Technology - Other Topics
CSCD记录号	CSCD:7025995
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/365202
作者单位	Zhang Jian, Institute of Atmospheric Composition,Chinese Academy of Meteorological Sciences, State Key Laboratory of Severe Weather;;Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Beijing 100081, China.; Zhou Chunhong, Institute of Atmospheric Composition,Chinese Academy of Meteorological Sciences, State Key Laboratory of Severe Weather;;Key Laboratory of Atmospheric Chemistry of China Meteorological Administration, Beijing 100081, China.; Gui Hailin, National Meteorological Center,China Meteorological Administration, Beijing 100081, China.; Zhang Xiaoye, Institute of Atmospheric Composition,Chinese Academy of Meteorological Sciences;;Institute of Urban Environment,Chinese Academy of Sciences, State Key Laboratory of Severe Weather;;Key Laboratory of Atmospheric Chemistry of China Meteorological Administration;;Center for Excellence in Regional Atmospheric Environment, ;;Xiamen, Beijing;; 100081;;361021.
推荐引用方式 GB/T 7714	Zhang Jian,Zhou Chunhong,Gui Hailin,et al. Biological crust in sand and dust storm source areas of Asia and its impact on dust emission[J],2021,12(3):1674-9278.
APA	Zhang Jian,Zhou Chunhong,Gui Hailin,&Zhang Xiaoye.(2021).Biological crust in sand and dust storm source areas of Asia and its impact on dust emission.气候变化研究进展,12(3),1674-9278.
MLA	Zhang Jian,et al."Biological crust in sand and dust storm source areas of Asia and its impact on dust emission".气候变化研究进展 12.3(2021):1674-9278.