Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China

Yinhui Zhang; Yi Luo; Wenwu Zhao

doi:10.1117/12.873236

3 November 2010 Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China

Yinhui Zhang, Yi Luo, Wenwu Zhao

Proceedings Volume 7841, Sixth International Symposium on Digital Earth: Data Processing and Applications; 78410X (2010) https://doi.org/10.1117/12.873236
Event: The Sixth International Symposium on Digital Earth, 2009, Beijing, China

Abstract

This study analyzed spatial and temporal changes in land use in an irrigation district covering an area of 1.7 million ha in Northern China by GIS analyses and also investigated changes in landscape pattern using the landscape structure analysis program FRAGSTATS over the study period from 1986 to 2000. The decreases in farmland and the increases in grassland area mainly resulted from the policy of grain for green and converting slope farmland into pasture from China government. In spite of the efforts to conserve the fragile ecosystem, the land degradation, including soil salinization and grassland degradation, was spreading rapidly. The area of alkali-saline land increased by 22493 ha and about 50555 ha of dense grassland degraded into mid-density grassland. In terms of landscape fragmentation, both farmland and dense grassland showed the tendency of increased fragmentation. Both adverse natural conditions and human activities are responsible for the land degradation expansion in Hetao irrigation district, but the root causes are increasing population pressure and irrational human activities, such as flooding irrigation method and over-grazing. To prevent land degradation from spreading, population control and improvement of the management are prerequisite approaches.

Citation Download Citation

Yinhui Zhang, Yi Luo, and Wenwu Zhao "Land use dynamics and landscape change pattern in Hetao irrigation district, Inner Mongolia, China", Proc. SPIE 7841, Sixth International Symposium on Digital Earth: Data Processing and Applications, 78410X (3 November 2010); https://doi.org/10.1117/12.873236

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available