Evaluation of land use change degree and ecological security in the Manas River Basin, Xinjiang, China

Evaluation of land use change degree and ecological security in the Manas River Basin, Xinjiang,... In this paper, we evaluate the extent of land use change and ecological security grades in the Manas River Basin, on the northern slopes of the Tianshan Mountains, from 1989–2002. Surveys were performed using Remote Sensing (RS) and Geographic Information System (GIS) means, and the relationship between land use change and ecological security was analyzed. The results are as follows: (i) the degree of land use change steadily increased in the Manas River Basin, and overall land use was in a state of development; (ii) From 1989–2002, the ecological security of the drainage basin generally improved somewhat, but deteriorated subsequently in some regions; (iii) the ecological security grade increased in regions with land use composite change extent values of 18–100, and ecological security grade improved from moderate warning in 1989 to early warning in 2002; and (iv) the cumulative areas of regions with relatively secure, and early-warning ecological security grade were ranked by land use degree in the order, V > IV > I > VI > III > II, showing that that regions with land use degree V (woodlands and grasslands) were important areas for ecological restoration and regeneration in this drainage basin, and that it was difficult to improve the ecological environment on sandy soils. We suggest that ecological security grades can be improved by increasing land use degree in regions where it is low. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Ecology Springer Journals

Evaluation of land use change degree and ecological security in the Manas River Basin, Xinjiang, China

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Publisher
Springer US
Copyright
Copyright © 2014 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Ecology; Environment, general
ISSN
1067-4136
eISSN
1608-3334
D.O.I.
10.1134/S1067413614010068
Publisher site
See Article on Publisher Site

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