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Climate change and sandy land development in
Qinghai Lake Watershed, China |
| SUN Yongliang1, LI Xiaoyan1, LIU Lianyou1, XU Heye2, ZHANG Dengshan2 |
| 1.State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University; Institute of Land Resources, College of Resources Science and Technology, Beijing Normal University; 2.Institute of Land Resources, College of Resources Science and Technology, Beijing Normal University |
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Abstract The Qinghai Lake Watershed, containing the largest saline lake in northwest of China, has suffered from severe sandy land development in recent years. This paper analyzes its daily precipitation, temperature, and wind from 1958 to 2001, and the spatial and temporal distributions of sandy land through the interpretation of remote sensing images covering four years (1977, 1987, 2000, and 2004). Results showed that since the middle of the 1960s, the daily precipitation (P) of 0 < P≤ 5 mm decreased, while the P > 20 mm increased significantly (S < 0.05) in their annual total amounts and days. The maximum daily precipitation also increased significantly. Both the maximum dry spell and the total dry spell of more than ten days had a significant upward trend. Since the beginning of the 1960s, all the extremely high, extremely low and mean temperatures increased significantly (S < 0.01), at a rate of 0.1°C/10a, 0.2°C/10a, and 0.2°C/10a, respectively. The days with extremely high temperature had a significant upward trend, while the days with extremely low temperature had a significant downward trend. The Qinghai Lake was significantly shrinking (S < 0.01) and provided abundant sediments for Aeolian erosion. The NNW wind prevailed in the watershed, and the largest scale wind was from the west and concentrated on the dry months. As a result, the sandy land was mainly born on the east bank of Qinghai Lake. The total sandy land area in the watershed had grown from 587.4 km2, 660.7 km2, 697.6 km2 to 805.8 km2, accordingly, its area percentage growing from 2.0%, 2.2%, 2.4% to 2.7%, respectively.
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Issue Date: 05 September 2008
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| 1 |
Hitz S, Smith J . Estimating global impactsfrom climate change. Global EnvironmentalChange, 2004, 14: 201–218.
doi:10.1016/j.gloenvcha.2004.04.010
|
| 2 |
Nicholls R J, Hoozemans F M J, Marchand M . Increasing flood risk and wetland losses due to globalsea-level rise: Regional and global analyses. Global Environmental Change, 1999, 9: S69–S87.
doi:10.1016/S0959‐3780(99)00019‐9
|
| 3 |
Parry M, Rosenzweig C, Iglesias A, Fischer F, Livermore M . Climate change and worldfood security: A new assessment. GlobalEnvironmental Change, 1999, 9: S51–S67.
doi:10.1016/S0959‐3780(99)00018‐7
|
| 4 |
Fischer G, Shah M, van Velthuizen H . Climate change and agricultural vulnerability. SpecialReport to the UN World Summit on Sustainable Development, Johannesburg. Laxenburg, Austria: International Institute forApplied Systems Analysis (IIASA), 2002
|
| 5 |
Arnell N W . Climate change and global water resources. Global Environmental Change, 1999, 9: S31–S49.
doi:10.1016/S0959‐3780(99)00017‐5
|
| 6 |
Martin P H, Lefebvre M G . Malaria and climate: Sensitivityof malaria potential transmission to climate. Ambio, 1995, 24: 20–207
|
| 7 |
Martens P, Kovats R S, Nijhof S, de Vries P, Livermore M T J, Bradley D J, Cox J, Mcmichael A J . Climate change and futurepopulations at risk of malaria. GlobalEnvironmental Change, 1999, 9: S89–S107.
doi:10.1016/S0959‐3780(99)00020‐5
|
| 8 |
Tol R S J, Dowlatabadi H . Vector-borne diseases, development,and climate change. Integrated EnvironmentalAssessment, 2002, 2: 173–181.
doi:10.1023/A:1013390516078
|
| 9 |
Tol R S J . Estimates of the damage costs of climate change, Part II: Dynamicestimates. Environmental and Resource Economics, 2002, 21: 135–160.
doi:10.1023/A:1014539414591
|
| 10 |
White A, Cannell M G R, Friend A D . Climate change impacts on ecosystems and the terrestrialcarbon sink: A new assessment. Global EnvironmentalChange, 1999, 9: S21–S30.
doi:10.1016/S0959‐3780(99)00016‐3
|
| 11 |
Sohngen B, Mendelsohn R, Sedjo R . A global model of climate change impacts on timber markets. Journal of Agricultural and Resource Economics, 2001, 26(2): 326–343
|
| 12 |
Halpin P N . Global climate change and natural area protection: Management responsesand research directions. Ecological Applications, 1997, 7: 828–843.
doi:10.1890/1051‐0761(1997)007[0828:GCCANA]2.0.CO;2
|
| 13 |
Bopp L, Monfray P, Aumont O, Dufresne J, Letreu H, Madec G, Terray L, Orr J C . Potential impact of climate change onmarine export production. Global BiogeochemicalCycles, 2001 : 15, 81–99.
doi:10.1029/1999GB001256
|
| 14 |
Clarke M L, Rendell H M . Climate change impacts onsand supply and the formation of desert sand dunes in the south-westU.S.A.Journal of Arid Environments, 1998, 39(3): 517–531.
doi:10.1006/jare.1997.0372
|
| 15 |
Zheng Y R, Xie Z X, Robert C, Jiang L H, Shimizu H . Did climate drive ecosystem change andinduce desertification in Otinday sandy land, China over the past40 years?Journalof Arid Environments, 2006, 64(3): 523–541.
doi:10.1016/j.jaridenv.2005.06.007
|
| 16 |
Sivakumar M V K . Interactions between climate and desertification. Agricultural and Forest Meteorology, 2007, 142: 143–155.
doi:10.1016/j.agrformet.2006.03.025
|
| 17 |
Shi Y M, Wang X M, Song C H . Aeolian sand deposition in the Qinghai Lake watershed. Acta Sedimentologica Sinica, 1996, 14: 234–238 (in Chinese)
|
| 18 |
Wang Y J, Zhou X L, Ni S X, Tu Q P, Deng Z W . Analysis on climate change in the regionof Qinghai Lake in the last 40 years. Journalof Nangjing Institute of Meteorology, 2003, 26(2): 228–235 (in Chinese)
|
| 19 |
Shen J, Liu X Q, Wang S M . Matsumoto R. Plalaeoclimatic changes in the Qinghai Lakearea during the last 18,000 years.QuaternaryInternational, 2005, 136: 131–140.
doi:10.1016/j.quaint.2004.11.014
|
| 20 |
Shi X H, Li L, Wang Q C, Liu P, Zhang H P, Liu Z J . Climate change and its influence on water level of Qinghai Lake. Meteorological Science and Technology, 2005, 33(1): 58–62 (in Chinese)
|
| 21 |
Li X Y, Xu H Y, Sun Y L, Zhang D S, Yang Z P . Lake-level change and water balance analysisat Lake Qinghai, west China during recent decades. Water Resources Management, 2007, 21: 1505–1516.
doi:10.1007/s11269‐006‐9096‐1
|
| 22 |
Wu X X, Zhou H X . Reasons and combation ofgrass land desertification in and around bird island in Qinghai Lake. Pasture Research in Qinghai Province, 1995, 4(3): 14–15 (in Chinese)
|
| 23 |
Qin B Q, Huang Q . Evaluation of the climaticchange impacts on the inland Lake-A case study of Lake Qinghai, China. Climatic Change, 1998, 39: 695–714.
doi:10.1023/A:1005319616456
|
| 24 |
Yu W G, Chen K L . Dynamic study on the remotesensing of desertified areas around the Qinghai Lake. Journal of Salt Lake Research, 2002, 10(4): 48–51 (in Chinese)
|
| 25 |
Sivakumar M V K . Empirical analysis of dry spells for agricultural applications inWest Africa. J. Climate, 1992, 5: 532–539.
doi:10.1175/1520‐0442(1992)005<0532:EAODSF>2.0.CO;2
|
| 26 |
Anagnostopoulou C, Maheras P, Karacostas T, Vafiadis M . Spatialand temporal analysis of dry spells in Greece. Theoretical and Applied Climatology, 2003, 74: 77–91.
doi:10.1007/s00704‐002‐0713‐5
|
| 27 |
Gong D Y, Wang J A, Han H . Trends of summer dry spells in China during the latetwentieth century. Meteorology and AtmosphericPhysics, 2005, 88: 203–216.
doi:10.1007/s00703‐004‐0081‐z
|
| 28 |
Anderson R S, Willetts B B . A review of recent progressin our understanding of Aeolian sediment transport. Acta Mechanica (Suppl.1), 1991, 1–19
|
| 29 |
Yao T D, Liu X D, Wang N L . Fluctuation of climate change in Tibetan Plateau. Chinese Science Bulletin, 2000, 45: 98–105 (in Chinese)
|
| 30 |
Xu S Y, Xu D F, A primary observation ofAeolian sand deposits on eastern shore of the Qinghai Lake. Journal of Desert Research, 1983, 3(3): 11–17 (in Chinese)
|
| 31 |
Zhang D S, Wu J W, Lu R J, Zhao Y Z, Chen Y . Study on the planning of the syntheticcontrol of land desertification in the peripheral area of the QinghaiLake. Arid Zone Research, 2003, 20(4): 307–311 (in Chinese)
|
| 32 |
Skidmore E L, Tatarko J . Stochastic wind simulationfor erosion modeling. Transactions of theASAE, 1990, 33: 1893–1899
|
| 33 |
Neuman C M, Scott M M . A wind tunnel study of theinfluence of pore water on Aeolian sediment transport. Journal of Arid Environments, 1998, 29: 403–419.
doi:10.1006/jare.1997.0371
|
| 34 |
Iversen J D, Rasmussen K R . The effect of wind speedand bed slope on sand transport. Sedimentology, 1999, 46: 723–731.
doi:10.1046/j.1365‐3091.1999.00245.x
|
| 35 |
Liu L Y, Skidmore E, Hasi E, Wagner L, Tatarko J . Dune sand transport as influenced bywind direction, speed and frequency in the Ordos plateau, China. Geomorphology, 2005, 67: 283–297.
doi:10.1016/j.geomorph.2004.10.005
|
| 36 |
Li F X, Li L, Shen F, Fu Y . Evolution ofLakeshore shape of Qinghai Lake and its causes. Resources Sciences, 2004, 26(1): 38–44 (in Chinese)
|
| 37 |
Song C H, Wang X M, Shi Y M, Chao J J, Wu A B . Sedimentary characteristics and microfaciesof shore zone in Qinghai Lake. Acta SedimentologicaSinica, 1999, 17(1): 51–57 (in Chinese)
|
| 38 |
Li L, Zhao Q . Research on the weather conditionof sand storms in Qinghai Province. MeteorologicalScience and Technology, 2002, 30(4): 218–221 (in Chinese)
|
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