The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China
The alpine ecosystems in permafrost regions are extremely sensitive to climate change. The headwater regions of Yangtze River and Yellow River of the Qinghai-Tibet Plateau are on the permafrost area. Aerial photos of the Source Regions of the Yangtze and Yellow River taken in 1968 and three phases o...
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ftchinacadscimhe:oai:ir.imde.ac.cn:131551/6553 2023-05-15T17:57:05+02:00 The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China Li Na Wang Genxu Liu Guangsheng Lin Yun Sun Xiangyang 2013 http://ir.imde.ac.cn/handle/131551/6553 https://doi.org/10.1007/s10113-013-0419-5 英语 eng REGIONAL ENVIRONMENTAL CHANGE Li Na,Wang Genxu,Liu Guangsheng,et al. The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China[J]. REGIONAL ENVIRONMENTAL CHANGE,2013,13(5):1099-1108. http://ir.imde.ac.cn/handle/131551/6553 doi:10.1007/s10113-013-0419-5 4 Land Cover Temporal And Spatial Patterns Grassland Degradation Source Regions Of The Yangtze And Yellow Rivers Qinghai-tibetan Plateau Science & Technology Life Sciences & Biomedicine Environmental Sciences & Ecology LANDSCAPE PATTERNS INDEXES Environmental Sciences Environmental Studies Article 期刊论文 2013 ftchinacadscimhe https://doi.org/10.1007/s10113-013-0419-5 2022-12-19T18:18:24Z The alpine ecosystems in permafrost regions are extremely sensitive to climate change. The headwater regions of Yangtze River and Yellow River of the Qinghai-Tibet Plateau are on the permafrost area. Aerial photos of the Source Regions of the Yangtze and Yellow River taken in 1968 and three phases of TM images acquired from 1986, 2000, and 2008 were used to analyze the spatial alterations of the land cover and corresponding effects on the environment guided by landscape ecology theory. Firstly, land cover types were divided into three classes and 11 subclasses. Analysis results revealed the trends and magnitude of the eco-environmental changes in the regions over the past four decades and showed a continuous degradation of grasslands and the extension of desertification and salinization. Secondly, five landscape pattern indices (i.e., NP, MPS, PR, SHEI, CONTAG) commonly used in landscape ecological studies were calculated, and results showed that this region had become more centralized and diversified. Finally, the factors causing the degradation of alpine grasslands were analyzed. The regional climate exhibited a tendency toward significant warming and desiccation with the air temperature increased by 0.03 A degrees C per year and relative stable precipitation over the last 40 years. And the temperature of permafrost in 0-20 cm soil layer obviously raised by 0.2-0.3 A degrees C in the last 40 years. The combined effects of climate warming and permafrost variation were the major drivers for the changes of landscape in alpine ecosystems. Article in Journal/Newspaper permafrost IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) Regional Environmental Change 13 5 1099 1108 |
institution |
Open Polar |
collection |
IMHE OpenIR (Institute of Mountain Hazards and Environment, Chinese Academy of Sciences) |
op_collection_id |
ftchinacadscimhe |
language |
English |
topic |
Land Cover Temporal And Spatial Patterns Grassland Degradation Source Regions Of The Yangtze And Yellow Rivers Qinghai-tibetan Plateau Science & Technology Life Sciences & Biomedicine Environmental Sciences & Ecology LANDSCAPE PATTERNS INDEXES Environmental Sciences Environmental Studies |
spellingShingle |
Land Cover Temporal And Spatial Patterns Grassland Degradation Source Regions Of The Yangtze And Yellow Rivers Qinghai-tibetan Plateau Science & Technology Life Sciences & Biomedicine Environmental Sciences & Ecology LANDSCAPE PATTERNS INDEXES Environmental Sciences Environmental Studies Li Na Wang Genxu Liu Guangsheng Lin Yun Sun Xiangyang The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China |
topic_facet |
Land Cover Temporal And Spatial Patterns Grassland Degradation Source Regions Of The Yangtze And Yellow Rivers Qinghai-tibetan Plateau Science & Technology Life Sciences & Biomedicine Environmental Sciences & Ecology LANDSCAPE PATTERNS INDEXES Environmental Sciences Environmental Studies |
description |
The alpine ecosystems in permafrost regions are extremely sensitive to climate change. The headwater regions of Yangtze River and Yellow River of the Qinghai-Tibet Plateau are on the permafrost area. Aerial photos of the Source Regions of the Yangtze and Yellow River taken in 1968 and three phases of TM images acquired from 1986, 2000, and 2008 were used to analyze the spatial alterations of the land cover and corresponding effects on the environment guided by landscape ecology theory. Firstly, land cover types were divided into three classes and 11 subclasses. Analysis results revealed the trends and magnitude of the eco-environmental changes in the regions over the past four decades and showed a continuous degradation of grasslands and the extension of desertification and salinization. Secondly, five landscape pattern indices (i.e., NP, MPS, PR, SHEI, CONTAG) commonly used in landscape ecological studies were calculated, and results showed that this region had become more centralized and diversified. Finally, the factors causing the degradation of alpine grasslands were analyzed. The regional climate exhibited a tendency toward significant warming and desiccation with the air temperature increased by 0.03 A degrees C per year and relative stable precipitation over the last 40 years. And the temperature of permafrost in 0-20 cm soil layer obviously raised by 0.2-0.3 A degrees C in the last 40 years. The combined effects of climate warming and permafrost variation were the major drivers for the changes of landscape in alpine ecosystems. |
format |
Article in Journal/Newspaper |
author |
Li Na Wang Genxu Liu Guangsheng Lin Yun Sun Xiangyang |
author_facet |
Li Na Wang Genxu Liu Guangsheng Lin Yun Sun Xiangyang |
author_sort |
Li Na |
title |
The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China |
title_short |
The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China |
title_full |
The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China |
title_fullStr |
The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China |
title_full_unstemmed |
The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China |
title_sort |
ecological implications of land use change in the source regions of the yangtze and yellow rivers, china |
publishDate |
2013 |
url |
http://ir.imde.ac.cn/handle/131551/6553 https://doi.org/10.1007/s10113-013-0419-5 |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
REGIONAL ENVIRONMENTAL CHANGE Li Na,Wang Genxu,Liu Guangsheng,et al. The ecological implications of land use change in the Source Regions of the Yangtze and Yellow Rivers, China[J]. REGIONAL ENVIRONMENTAL CHANGE,2013,13(5):1099-1108. http://ir.imde.ac.cn/handle/131551/6553 doi:10.1007/s10113-013-0419-5 |
op_rights |
4 |
op_doi |
https://doi.org/10.1007/s10113-013-0419-5 |
container_title |
Regional Environmental Change |
container_volume |
13 |
container_issue |
5 |
container_start_page |
1099 |
op_container_end_page |
1108 |
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1766165445806653440 |