Spatiotemporal Degradation of Abandoned Farmland and Associated Eco-Environmental Risks in the High Mountains of the Nepalese Himalayas

doi:10.3390/land9010001

CORC > 成都山地灾害与环境研究所 > 中国科学院水利部成都山地灾害与环境研究所 > 山区发展研究中心

	Spatiotemporal Degradation of Abandoned Farmland and Associated Eco-Environmental Risks in the High Mountains of the Nepalese Himalayas
	Chaudhary, Suresh 1,2,3,4; Wang, Yukuan 2,4; Dixit, Amod Mani 1; Khanal, Narendra Raj 5; Xu, Pei 2,4; Fu, Bin 2,4; Yan, Kun 2,4; Liu, Qin 2,4; Lu, Yafeng 2,4; Li, Ming 2,4
刊名	LAND
	2020
卷号	9 期号:1 页码:1
关键词	farmland abandonment spatiotemporal degradation eco-environmental risk regression model mountain region Nepal
DOI	10.3390/land9010001
通讯作者	Wang, Yukuan(wangyukuan@imde.ac.cn)
产权排序	1
文献子类	Article
英文摘要	Globally, farmland abandonment has been a major phenomenon for eco-environmental and social landscape changes in the mountain regions. Farmland abandonment led to endangering the capacity of mountain ecosystems as well as variety of eco-environmental processes that play a pivotal role in regional as well local level eco-environment security. This research aims to (i) assess the spatiotemporal degradation of abandoned farmlands, (ii) identify the major causes of farmland degradation, and (iii) analyze the eco-environmental risks triggered or exacerbated by the degradation of abandoned farmlands. We conducted an inventory of the spatiotemporal distribution of abandoned farmlands and their degradation status with Google earth images and by modeling and interpreting low-height remote sensing images taken by an unmanned aerial vehicle (UAV). Geomorphic damages were mapped at the scale of individual abandoned farms. A multivariate regression statistical (MRS) model was used to identify the major causes of degradation. This research revealed that out of the total surveyed farmlands, 92% were already completely irreversibly damaged. The damages started with the disruption of terraces and bulging processes that occurred within the year after abandonment. This degradation induced diverse hazardous processes, such as landslides, debris flows, rock falls, the formation of gullies, soil erosion, and the development of sinkholes, which increase the negative effects of on both land resources and plant succession. Farmland abandonment does not automatically lead to plant colonization because geomorphic damage is intensified prior to colonization. Therefore, land management is required for plant colonization as well as other efforts to reduce degradation induced eco-environmental risk. This study thus could help land planners and environmentalists in the development of suitable guidelines (pre- or post-abandonment) plans, programmes, and legislation to effectively address the problem of abandoned farmland.
电子版国际标准刊号	2073-445X
资助项目	135 strategic program of the Institute of Mountain Hazards and Environment, Chinese Academy of Science[SDS - 135 - 1703] ; International talent program of the Chinese Academy of the Sciences[2019 VCA 0026] ; Chinese Academy of Sciences-theWorld Academy of Sciences (CAS-TWAS) Presidents Fellowship program
WOS关键词	LAND-USE CHANGE ; SOIL-EROSION ; AGRICULTURAL ABANDONMENT ; SEMIARID ENVIRONMENT ; MANAGEMENT ; LANDSCAPE ; RUNOFF ; AREAS ; CONSEQUENCES ; LIVELIHOODS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	MDPI
WOS记录号	WOS:000513129300004
资助机构	135 strategic program of the Institute of Mountain Hazards and Environment, Chinese Academy of Science ; International talent program of the Chinese Academy of the Sciences ; Chinese Academy of Sciences-theWorld Academy of Sciences (CAS-TWAS) Presidents Fellowship program
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/33939]
专题	成都山地灾害与环境研究所_山区发展研究中心
通讯作者	Wang, Yukuan
作者单位	1.Natl Soc Earthquake Technol Nepal, POB 13667, Kathmandu, Lalitpur, Nepal; 2.Three Gorges Project Ecol Environm Monitoring Sys, Wanzhou Key Reg Ecol & Environm Monitoring Stn, Wanzhou 404020, Peoples R China; 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China; 4.Chinese Acad Sci, Inst Mt Hazards & Environm, Chengdu 610041, Peoples R China; 5.Tribhuvan Univ, Cent Dept Geog, Univ Campus,POB 44613, Kirtipur, Nepal
推荐引用方式 GB/T 7714	Chaudhary, Suresh,Wang, Yukuan,Dixit, Amod Mani,et al. Spatiotemporal Degradation of Abandoned Farmland and Associated Eco-Environmental Risks in the High Mountains of the Nepalese Himalayas[J]. LAND,2020,9(1):1.
APA	Chaudhary, Suresh.,Wang, Yukuan.,Dixit, Amod Mani.,Khanal, Narendra Raj.,Xu, Pei.,...&Li, Ming.(2020).Spatiotemporal Degradation of Abandoned Farmland and Associated Eco-Environmental Risks in the High Mountains of the Nepalese Himalayas.LAND,9(1),1.
MLA	Chaudhary, Suresh,et al."Spatiotemporal Degradation of Abandoned Farmland and Associated Eco-Environmental Risks in the High Mountains of the Nepalese Himalayas".LAND 9.1(2020):1.