A systems approach for analyzing vegetative and soil degradation in Arnigad micro-watershed of Indian Himalayan region

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 > Journal of Mountain Science > Journal of Mountain Science-2010 > Vol7 No.4

	A systems approach for analyzing vegetative and soil degradation in Arnigad micro-watershed of Indian Himalayan region
	Gera, Mohit ; Sankhayan, Prem L. ; Hofstad, Ole
刊名	JOURNAL OF MOUNTAIN SCIENCE
	2010-12
卷号	7 期号:4 页码:315–326
关键词	Bio-economic model Dynamic linear programming Improved energy sources Vegetative and soil degradation Soil erosion Indian Himalayan region
ISSN号	1672-6316
通讯作者	Gera, M
英文摘要	This study analyzes the vegetative and soil degradation, measured as biomass and soil loss, for Arnigad micro-watershed located in Indian Himalayan state of Uttarakhand, in systems framework by using dynamic linear programming bio-economic model. The focus is at investigating the effects of alternate policy regimes, i.e., introduction of improved energy sources for cooking along with substitution of existing local livestock breeds with improved breed, reduction in human population growth and introduction of high yielding varieties of main crops including paddy, maize and wheat. The model horizon extended over a period of 25 years, i.e., from 2006 to 2030. It was found that the model scenario incorporating increased use of improved energy sources along with substitution of local cows by improved cows could be the most effective policy option in reducing vegetative and soil degradation. The vegetative biomass density declined to 19.76% compared to 35.24% in the BASE scenario and soil erosion loss was also lowered by 29.13%. Also, the reduction of population growth rate to half of the BASE scenario led to minor improvements in degradation. Introduction of high yielding varieties of main crops slightly increased vegetative degradation but reduced soil loss (8.35%) with respect to the BASE scenario. Such a phenomenon could be explained in terms of changed crop mix resulting in reduced amount of crop by-products requiring increased lopping of tree branches for animal fodder. The policy option of the increased use of improved energy sources along with substitution of improved breed of cows resulted in 9.58% higher income. Introduction of high yielding varieties of crops led to 1.92% increase in income, but the income decreased by 1.25 % when population growth was reduced to half. The usefulness of the model lies in analyzing the systems behavior in its entirety where the results can predict the possible direction of change as a result of manipulation in alternate economic regimes.
语种	英语
公开日期	2013-08-12
内容类型	期刊论文
源URL	[http://ir.imde.ac.cn/handle/131551/5902]
专题	成都山地灾害与环境研究所_Journal of Mountain Science _Journal of Mountain Science-2010_Vol7 No.4
推荐引用方式 GB/T 7714	Gera, Mohit,Sankhayan, Prem L.,Hofstad, Ole. A systems approach for analyzing vegetative and soil degradation in Arnigad micro-watershed of Indian Himalayan region[J]. JOURNAL OF MOUNTAIN SCIENCE,2010,7(4):315–326.
APA	Gera, Mohit,Sankhayan, Prem L.,&Hofstad, Ole.(2010).A systems approach for analyzing vegetative and soil degradation in Arnigad micro-watershed of Indian Himalayan region.JOURNAL OF MOUNTAIN SCIENCE,7(4),315–326.
MLA	Gera, Mohit,et al."A systems approach for analyzing vegetative and soil degradation in Arnigad micro-watershed of Indian Himalayan region".JOURNAL OF MOUNTAIN SCIENCE 7.4(2010):315–326.