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Monitoring rangeland degradation using a novel local NPP scaling based scheme over the “Three-River Headwaters” region, hinterland of the Qinghai-Tibetan Plateau

Monitoring rangeland degradation using a novel local NPP scaling based scheme over the “Three-River Headwaters” region, hinterland of the Qinghai-Tibetan Plateau
Monitoring rangeland degradation using a novel local NPP scaling based scheme over the “Three-River Headwaters” region, hinterland of the Qinghai-Tibetan Plateau
The “Three-River Headwaters” region (TRHR) rangeland ecosystem is extremely sensitive and fragile, and in recent years has undergone continuous degradation. The vast area and severe nature conditions inhibit data acquisition and field experiments, resulting in different understandings about the spatial characteristics and dynamics of rangeland degradation in the region. Therefore, a reliable monitoring method of rangeland degradation is urgently needed for the rangeland protection and management. In this paper, a novel rangeland degradation monitoring scheme based on Local NPP Scaling (LNS) is suggested; A suitable partition program of rangeland productivity unit is set up by using Analytical Hierarchy Process (AHP). The spatio-temporal pattern of degradation in 1990 and 2004 were revealed and validated by multiple data sets including field measured data, land use and land cover maps and findings from related research. This research provides basis in the avoidance of intensive field work and labor costs for visual interpretation of remote sensing image. The results show that the percentage of rangeland degradation is 32.86% in 1990 and 36.7% in 2004, indicating 3.84% increase in 15 years. The eastern part of the study area, comprising of Banma, Gadê, Henan, Jigzhi, Tongde and Zêkog had minimal degradation. The most severely degraded area is Qumarlêb, and its degraded rangeland accounted for 63.33% of the total area in 1990 and increased to 77.47% in 2004. The degradation at Madoi and Chindu is over 40%. It is found that the results on the spatio-temporal distribution of the rangeland degradation at TRHR are reasonable through various verifications. Thus, the novel approach is effective in monitoring rangeland degradation in an inaccessible region and harsh environment.
1040-6182
97-114
An, Ru
b1a1658a-20f7-49e1-8da5-3b4e321ce595
Wang, Huilin
862eea88-3d41-49e6-96f9-0ed4629fc919
Feng, Xuezhi
e959be76-8b43-4625-a070-9c3b09cbb143
Wu, Hong
7f02e608-5a39-4967-a91b-604d1522f694
Wang, Zhe
cd5ba2f9-2c1b-48c7-bd9d-30b8708fd7de
Wang, Ying
9f99be6c-c16d-4204-9ae8-36343e2349dc
Shen, Xiaoji
7ae97d85-07c4-4016-b2ff-e1ee727982e3
Lu, Caihong
2dc22668-c6c2-4b90-b19b-ddaf5d754de2
Quaye-Ballardd, Jonathan Arthur
cbe3b095-89ae-4262-87f5-5c081f9d5804
Chen, Yuehong
827c7a53-1f3c-4baa-bf6b-ee4a57a3ee7d
Zhao, Yinghui
fdce82d7-e3f0-423a-bd81-74a20bbcc780
An, Ru, Wang, Huilin, Feng, Xuezhi, Wu, Hong, Wang, Zhe, Wang, Ying, Shen, Xiaoji, Lu, Caihong, Quaye-Ballardd, Jonathan Arthur, Chen, Yuehong and Zhao, Yinghui (2017) Monitoring rangeland degradation using a novel local NPP scaling based scheme over the “Three-River Headwaters” region, hinterland of the Qinghai-Tibetan Plateau Quaternary International, 444, pp. 97-114. (doi:10.1016/j.quaint.2016.07.050).

An, Ru, Wang, Huilin, Feng, Xuezhi, Wu, Hong, Wang, Zhe, Wang, Ying, Shen, Xiaoji, Lu, Caihong, Quaye-Ballardd, Jonathan Arthur, Chen, Yuehong and Zhao, Yinghui (2017) Monitoring rangeland degradation using a novel local NPP scaling based scheme over the “Three-River Headwaters” region, hinterland of the Qinghai-Tibetan Plateau Quaternary International, 444, pp. 97-114. (doi:10.1016/j.quaint.2016.07.050).

Record type: Article

Abstract

The “Three-River Headwaters” region (TRHR) rangeland ecosystem is extremely sensitive and fragile, and in recent years has undergone continuous degradation. The vast area and severe nature conditions inhibit data acquisition and field experiments, resulting in different understandings about the spatial characteristics and dynamics of rangeland degradation in the region. Therefore, a reliable monitoring method of rangeland degradation is urgently needed for the rangeland protection and management. In this paper, a novel rangeland degradation monitoring scheme based on Local NPP Scaling (LNS) is suggested; A suitable partition program of rangeland productivity unit is set up by using Analytical Hierarchy Process (AHP). The spatio-temporal pattern of degradation in 1990 and 2004 were revealed and validated by multiple data sets including field measured data, land use and land cover maps and findings from related research. This research provides basis in the avoidance of intensive field work and labor costs for visual interpretation of remote sensing image. The results show that the percentage of rangeland degradation is 32.86% in 1990 and 36.7% in 2004, indicating 3.84% increase in 15 years. The eastern part of the study area, comprising of Banma, Gadê, Henan, Jigzhi, Tongde and Zêkog had minimal degradation. The most severely degraded area is Qumarlêb, and its degraded rangeland accounted for 63.33% of the total area in 1990 and increased to 77.47% in 2004. The degradation at Madoi and Chindu is over 40%. It is found that the results on the spatio-temporal distribution of the rangeland degradation at TRHR are reasonable through various verifications. Thus, the novel approach is effective in monitoring rangeland degradation in an inaccessible region and harsh environment.

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Accepted/In Press date: 27 August 2016
e-pub ahead of print date: 28 August 2016
Published date: 15 July 2017

Identifiers

Local EPrints ID: 414047
URI: http://eprints.soton.ac.uk/id/eprint/414047
ISSN: 1040-6182
PURE UUID: aa0ce691-27bc-4d51-8ccb-6508623b18d5

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Date deposited: 13 Sep 2017 16:31
Last modified: 03 Nov 2017 17:30

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Contributors

Author: Ru An
Author: Huilin Wang
Author: Xuezhi Feng
Author: Hong Wu
Author: Zhe Wang
Author: Ying Wang
Author: Xiaoji Shen
Author: Caihong Lu
Author: Jonathan Arthur Quaye-Ballardd
Author: Yuehong Chen
Author: Yinghui Zhao

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