Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1016/j.gloplacha.2008.09.004 |
A coupled human-environment model for desertification simulation and impact studies | |
Hellden, Ulf | |
通讯作者 | Hellden, Ulf |
来源期刊 | GLOBAL AND PLANETARY CHANGE
![]() |
ISSN | 0921-8181 |
出版年 | 2008 |
卷号 | 64期号:3-4页码:158-168 |
英文摘要 | This paper presents the development of a system dynamic model to simulate and analyze desertification. The human-environment coupled model integrates socio-economic drivers with bio-physical drivers of biomass production, land degradation and desertification. It is based on the UN and GEF definitions of desertification. It illustrates the concept of desertification through differential equation and simulation output graphics. It is supplemented with a causal loop diagram demonstrating the existing feed-back mechanisms. The model relates population pressure and dynamics over time to the growth and availability of biomass resources. The human population stock is described as a function of growth rate, death rate and resources dependent in and out migration of people. The relative growth rate of the stock of resources is modeled as a function of climate and exploitation pressure affecting soil erosion and water availability. The model is applied for the Sahelian desertification syndrome using input data to illustrate and simulate a 150 years period (1900-2050) in Kordofan, Sudan. The model indicates that it is difficult to generate irreversible desertification. (C) 2008 Elsevier B.V. All rights reserved. |
英文关键词 | desertification simulation land degradation system dynamic modelling Sahel |
类型 | Article |
语种 | 英语 |
国家 | Sweden |
收录类别 | SCI-E |
WOS记录号 | WOS:000262428500007 |
WOS关键词 | HUMAN APPROPRIATION ; PHOTOSYNTHESIS ; PRODUCTS |
WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
WOS研究方向 | Physical Geography ; Geology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/157525 |
作者单位 | (1)Lund Univ, Dept Phys Geog & Ecosyst Anal, S-22362 Lund, Sweden |
推荐引用方式 GB/T 7714 | Hellden, Ulf. A coupled human-environment model for desertification simulation and impact studies[J],2008,64(3-4):158-168. |
APA | Hellden, Ulf.(2008).A coupled human-environment model for desertification simulation and impact studies.GLOBAL AND PLANETARY CHANGE,64(3-4),158-168. |
MLA | Hellden, Ulf."A coupled human-environment model for desertification simulation and impact studies".GLOBAL AND PLANETARY CHANGE 64.3-4(2008):158-168. |
条目包含的文件 | 条目无相关文件。 |
个性服务 |
推荐该条目 |
保存到收藏夹 |
导出为Endnote文件 |
谷歌学术 |
谷歌学术中相似的文章 |
[Hellden, Ulf]的文章 |
百度学术 |
百度学术中相似的文章 |
[Hellden, Ulf]的文章 |
必应学术 |
必应学术中相似的文章 |
[Hellden, Ulf]的文章 |
相关权益政策 |
暂无数据 |
收藏/分享 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。