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	黄土高原植被覆盖变化对生态系统服务影响及其阈值
其他题名	The effects of vegetation coverage changes on ecosystem service and their threshold in the Loess Plateau
	张琨; 吕一河; 傅伯杰; 尹礼唱; 于丹丹
来源期刊	地理学报
ISSN	0375-5444
出版年	2020
卷号	75 期号:5 页码:949-960
中文摘要	黄土高原是退耕还林工程的核心区域,是中国生态恢复成效最显著的区域。明确黄土高原植被恢复对生态系统服务的影响,识别植被影响的阈值效应,是学术研究和管理实践共同的需求。然而,目前相关研究仍存在研究空缺,特别是在区域尺度对生态系统服务随植被变化阈值进行识别的研究较少。本文选择植被覆盖度(FVC)为指标表征2000-2015年黄土高原植被恢复情况,以土壤保持服务、产水服务和碳固定服务为指标表征研究区生态系统服务情况,对二者的时空变化及交互作用进行分析,评估植被覆盖变化对生态系统服务的影响,并对影响的阈值进行定量识别。结果显示:① 2000-2015年黄土高原植被显著恢复;生态系统服务变化差异明显,碳固定服务明显增强,土壤保持服务得到一定改善,产水服务较为稳定。②植被覆盖变化与生态系统服务变化的相关程度存在差异,植被覆盖与碳固定服务的关联性最强,其次为土壤保持服务。③植被覆盖增加能够促进区域生态系统服务总体提升,但促进作用存在阈值效应。植被覆盖影响的阈值在林地区、林地-草地区、草地区和草地-沙漠区分别为44%、32%、34%和34%,超过上述阈值,植被覆盖增加的促进作用趋于减弱。
英文摘要	The Loess Plateau is the core region of the "Green to Grain" Program, which makes it become the most successful example of ecological restoration in China. It is the common demand of both academic research and management practice to analyze the effects of vegetation restoration on ecosystem service and identify the threshold effects of vegetation restoration. However, there still is a research gap in related studies, especially for the thresholds of vegetation in the ecosystem service change at regional scale. In this study, we chose the fractional vegetation cover (FVC) as an index to indicate the vegetation coverage change in the Loess Plateau in 2000-2015, and took soil conservation service, water yield service and carbon sequestration service as indexes to exhibit the ecosystem service changes. The spatiotemporal changes of vegetation coverage and ecosystem services and their interaction were quantitatively analyzed. On such a basis, we further assessed the effects of vegetation coverage change on ecosystem services and quantitatively identified their thresholds. The results indicated that: (1) The vegetation coverage significantly improved in 2000-2015. Meanwhile, the differences of ecosystem service changes were prominent, with the carbon sequestration service getting significant enhancement, soil conservation service getting certain improvements and the water yield service maintaining steady. (2) There are differences among the correlations between vegetation restoration and changes of ecosystem service. The correlation of vegetation coverage-carbon sequestration service was the strongest, followed by that of vegetation coverage-soil conservation service. (3) The vegetation restoration could promote the improvement of the overall level of regional ecosystem service. Furthermore, we revealed the threshold effect in the promotion. The threshold occurrence resulted in the decrease of promotion efficiency of vegetation restoration, with vegetation coverage reaching 44%, 32%, 34% and 34% in forest zone, forest-grass zone, grass zone and grass-desert zone, respectively.
中文关键词	植被覆盖度 ; 生态系统服务 ; 生态恢复 ; 阈值 ; 生物气候区 ; 黄土高原
英文关键词	vegetation coverage ecosystem service ecological restoration threshold bioclimatic zone Loess Plateau
类型	Article
语种	中文
收录类别	CSCD
WOS研究方向	Plant Sciences
CSCD记录号	CSCD:6729563
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/336502
作者单位	张琨, 生态环境部南京环境科学研究所, 南京, 江苏 210042, 中国.; 于丹丹, 生态环境部南京环境科学研究所, 南京, 江苏 210042, 中国.; 吕一河, 中国科学院生态环境研究中心;;中国科学院大学, 城市与区域生态国家重点实验室;;, ;;, 北京;;北京 100085;;100049, 中国.; 傅伯杰, 中国科学院生态环境研究中心;;北京师范大学地理科学学部, 城市与区域生态国家重点实验室;;地表过程与资源生态国家重点实验室, ;;, 北京;;北京 100085;;100875, 中国.; 尹礼唱, 中国科学院生态环境研究中心;;长安大学地球科学与资源学院, 城市与区域生态国家重点实验室;;, ;;西安, 北京;; 100085;;710054, 中国.
推荐引用方式 GB/T 7714	张琨,吕一河,傅伯杰,等. 黄土高原植被覆盖变化对生态系统服务影响及其阈值[J],2020,75(5):949-960.
APA	张琨,吕一河,傅伯杰,尹礼唱,&于丹丹.(2020).黄土高原植被覆盖变化对生态系统服务影响及其阈值.地理学报,75(5),949-960.
MLA	张琨,et al."黄土高原植被覆盖变化对生态系统服务影响及其阈值".地理学报 75.5(2020):949-960.