Evaluation of changes in ecological security in China’s Qinghai Lake Basin from 2000 to 2013 and the relationship to land use and climate change

2013 ◽  
Vol 72 (2) ◽  
pp. 341-354 ◽  
Author(s):  
Hong Wang ◽  
Huiling Long ◽  
Xiaobing Li ◽  
Feng Yu
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Ecological Security ◽  
The Relationship ◽  
Qinghai Lake Basin

Land-use effects on organic and inorganic carbon patterns in the topsoil around Qinghai Lake basin, Qinghai-Tibetan Plateau

CATENA ◽  
2016 ◽  
Vol 147 ◽  
pp. 345-355 ◽  
Author(s):  
Chunli Li ◽  
Qi Li ◽  
Liang Zhao ◽  
Shidong Ge ◽  
Dongdong Chen ◽  
...  
Keyword(s):  
Land Use ◽  
Tibetan Plateau ◽  
Inorganic Carbon ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Organic And Inorganic Carbon ◽  
Land Use Effects ◽  
Qinghai Lake Basin

Climate change and anthropogenic activities in Qinghai Lake basin over the last 8500 years derived from pollen and charcoal records in an aeolian section

CATENA ◽  
2020 ◽  
Vol 193 ◽  
pp. 104616 ◽  
Author(s):  
Haicheng Wei ◽  
Chongyi E ◽  
Jing Zhang ◽  
Yongjuan Sun ◽  
Qingkuan Li ◽  
...  
Keyword(s):  
Climate Change ◽  
Anthropogenic Activities ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Qinghai Lake Basin

scholarly journals Carbon Dynamics in the Northeastern Qinghai–Tibetan Plateau from 1990 to 2030 Using Landsat Land Use/Cover Change Data

2020 ◽  
Vol 12 (3) ◽  
pp. 528 ◽  
Author(s):  
Jingye Li ◽  
Jian Gong ◽  
Jean-Michel Guldmann ◽  
Shicheng Li ◽  
Jie Zhu
Keyword(s):  
Land Use ◽  
Tibetan Plateau ◽  
Carbon Storage ◽  
Sharp Decrease ◽  
Total Carbon ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Ecosystem Carbon ◽  
Trade Offs ◽  
The Impact

Land use/cover change (LUCC) has an important impact on the terrestrial carbon cycle. The spatial distribution of regional carbon reserves can provide the scientific basis for the management of ecosystem carbon storage and the formulation of ecological and environmental policies. This paper proposes a method combining the CA-based FLUS model and the Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model to assess the temporal and spatial changes in ecosystem carbon storage due to land-use changes over 1990–2015 in the Qinghai Lake Basin (QLB). Furthermore, future ecosystem carbon storage is simulated and evaluated over 2020–2030 under three scenarios of natural growth (NG), cropland protection (CP), and ecological protection (EP). The long-term spatial variations in carbon storage in the QLB are discussed. The results show that: (1) Carbon storage in the QLB decreased at first (1990–2000) and increased later (2000–2010), with total carbon storage increasing by 1.60 Tg C (Teragram: a unit of mass equal to 1012 g). From 2010 to 2015, carbon storage displayed a downward trend, with a sharp decrease in wetlands and croplands as the main cause; (2) Under the NG scenario, carbon reserves decrease by 0.69 Tg C over 2020–2030. These reserves increase significantly by 6.77 Tg C and 7.54 Tg C under the CP and EP scenarios, respectively, thus promoting the benign development of the regional ecological environment. This study improves our understanding on the impact of land-use change on carbon storage for the QLB in the northeastern Qinghai–Tibetan Plateau (QTP).

Geophysical survey on the tectonic and sediment distribution of Qinghai Lake basin

2006 ◽  
Vol 49 (8) ◽  
pp. 851-861 ◽  
Author(s):  
Zhisheng An ◽  
Ping Wang ◽  
Ji Shen ◽  
Yixiang Zhang ◽  
Peizhen Zhang ◽  
...  
Keyword(s):  
Geophysical Survey ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Sediment Distribution ◽  
Qinghai Lake Basin

Using coprophilous fungi to reconstruct the history of pastoralism in the Qinghai Lake Basin, Northeastern Qinghai-Tibetan Plateau

2019 ◽  
Vol 44 (1) ◽  
pp. 70-93 ◽  
Author(s):  
Hai-cheng Wei ◽  
Guang-liang Hou ◽  
Qi-shun Fan ◽  
David B Madsen ◽  
Zhan-jie Qin ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
High Altitude ◽  
Total Concentration ◽  
Fungal Spore ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Human Settlement ◽  
Coprophilous Fungi ◽  
History Of ◽  
Qinghai Lake Basin

The history of permanent human settlement in the high-altitude regions (>3000 m above sea level [masl]) of the Qinghai-Tibetan Plateau (QTP) is important in understanding human adaptation to this cold “Third Pole” region. The Qinghai Lake Basin was an important corridor used by prehistoric humans migrating to the inner QTP. Pastoralism is currently the most important means of sustaining permanent human settlement in the high-altitude regions of the QTP. However, the lack of reliable proxy measures reflecting prehistoric pastoral activities impedes our understanding of how pastoralism developed. The identification of coprophilous fungi in prehistoric cultural deposits may help refine the history of pastoralism. We collected 21 modern domesticated herbivore dung samples and 66 surface soil samples from the Qinghai Lake Basin for fungal spore analyses. We then evaluated how useful such analyses are for identifying grazing activities. Fifty-three samples were also collected from the JXG2 stratigraphic profile (∼10.0–0 ka; 3312 masl) for fungal spore analysis. Results indicate that low and stable values of the total concentration of coprophilous fungi were present from ∼10.0 to ∼5.5 ka. Concentrations gradually increased from ∼5.5 to ∼4.2 ka, significantly increased from ∼4.2 to ∼2.6 ka, and then increased dramatically after ∼2.6 ka. By combining these results with charcoal concentrations (>50 µm), lithic artifacts, bones and potsherds recovered from the JXG2 site, we infer that early pastoralism in Qinghai Lake Basin appeared between ∼6.0 to ∼5.5 ka and gradually intensified throughout the remainder of the Holocene as herding and farming gradually replaced hunting–gathering as the primary subsistence strategies. These results are supported by pollen records, archeological remains and historical records in the northeastern QTP.

A new find of macrofossils of Picea crassifolia Kom. in early–middle Holocene sediments of the Qinghai Lake basin and its paleoenvironmental significance

2018 ◽  
Vol 90 (2) ◽  
pp. 310-320 ◽  
Author(s):  
Ruijie Lu ◽  
Xiaokang Liu ◽  
Zhiqiang Lü ◽  
Lu Chen ◽  
Jing Du
Keyword(s):  
Woody Debris ◽  
Coniferous Forest ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Spruce Forest ◽  
Picea Crassifolia ◽  
Middle Holocene ◽  
Qinghai Spruce ◽  
Qinghai Lake Basin ◽  
Growth And Reproduction

AbstractHere we report a new find of abundant woody debris and cones in stratum of two sections located to the east of the Qinghai Lake basin in China. Analysis of the anatomical structure of the wood and cones confirmed that they are Picea crassifolia Kom. The results of accelerator mass spectrometry 14C dating indicate that the buried Qinghai spruce grew during 9.7–4.2 ka, and the ages of the large trunks or branches are mainly concentrated within the interval 7.5–6.5 ka. This finding gives direct evidence at the species level about the presence of coniferous forest in the early–middle Holocene in Qinghai lake basin. In addition, the buried cones suggest that the early-middle Holocene environment was suitable for the propagation of Picea crassifolia Kom. The variations in the occurrence of Qinghai spruce forest in the Holocene probably reflect changes in humidity/moisture. The humid early-middle Holocene was suitable for the growth and reproduction of Qinghai spruce forest, while a shift toward an increasingly arid climate during the late Holocene resulted in the disappearance of Picea crassifolia Kom. from the Qinghai Lake basin, although human activities may also have contributed to the environmental change.

Analysis on grassland degradation in Qinghai Lake Basin during 2000-2010

2013 ◽  
Vol 33 (14) ◽  
pp. 4450-4459 ◽  
Author(s):  
骆成凤 LUO Chengfeng ◽  
许长军 XU Changjun ◽  
游浩妍 YOU Haoyan ◽  
靳生洪 JIN Shenghong
Keyword(s):  
Qinghai Lake ◽  
Lake Basin ◽  
Grassland Degradation ◽  
Qinghai Lake Basin

Landscape reconstruction and the relationship between human and environment in Yaowuyao area, Northeastern Tibetan Plateau since 15000 yr BP

2020 ◽  
Author(s):  
Naimeng Zhang ◽  
Qinghai Xu ◽  
Dongju Zhang ◽  
Ulrike Herzschuh ◽  
Zhongwei Shen ◽  
...  
Keyword(s):  
Tibetan Plateau ◽  
Human Activity ◽  
Human Activities ◽  
Tibet Plateau ◽  
Qinghai Lake ◽  
Lake Basin ◽  
Human Beings ◽  
Landscape Reconstruction ◽  
Qinghai Lake Basin ◽  
Early Human

<p>Understanding the paleoenvironment (such as climate and landscape) in the area where the early ancient human appears on the Tibetan Plateau is an interesting topic. Based on the results of pollen data on the Yaowuyao loess section of the Qinghai Lake Basin, we used landscape reconstruction algorithms to reconstruct the changes in vegetation cover for 15,000 years. It is shown that the vegetation in the Yaowuyao area changed from temperate steppe (15-7.5 ka) to forest-steppe (7.5-4 ka). Compared with previous studies on the sediment in Qinghai Lake, our study can better reflect the local environment of the Qinghai Lake basin. Furthermore, based on the paleoclimate change data and archeological data from the surrounding areas, it is noticed that while precipitation increases and trees increase, human activities decrease. This may be caused by the substance and strategies of the ancient human beings that have adapted to the steppe. In addition, our results also show that the intensity of ancient human activity has a negative correlation with plant biodiversity, which may be related to human disturbance to the environment. Our paleoecological and environmental study not only shows the paleoenvironment of the early human activities on the Qinghai-Tibet Plateau but also revealed possible early human activity signals.</p>

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