Wetland loss and degradation in the Yellow River Delta, Shandong Province of China

Wang, Maojun; Qi, Shanzhong; Zhang, Xuexia

doi:10.1007/s12665-011-1491-0

Cited by 90 publications

(59 citation statements)

References 4 publications

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“…Additionally, economic development, population growth, and urban expansion, especially the development of the Shengli oilfield, caused a number of wetlands to be destroyed by the building of roads, dams, ports, and other infrastructure [7,8,22,75,76]. The integrity of the wetlands has been undermined due to the infrastructure construction and the original wetland landscape has become increasingly degraded and fragmented.…”

Section: Human Activitiesmentioning

confidence: 99%

“…This is inextricably linked to the development of agriculture, the lack of awareness of the importance of wetlands, and government policies and laws [7,14,15,93,94]. The Yellow River Delta wetlands were no exception; in the middle stage of wetland change (stage 2: 1984-1995), because of the lack of ecological protection awareness and the excessive pursuit of economic interests, a large area of wetland was converted into farmland, aquaculture ponds, salt pans and other uses ( Table 2).…”

Section: Conservation Policies and Projectsmentioning

confidence: 99%

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Four Decades of Estuarine Wetland Changes in the Yellow River Delta Based on Landsat Observations Between 1973 and 2013

Zhu

Zhang

Huang

2018

Water

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Yellow River Delta wetlands are essential for the migration of endangered birds and breeding. The wetlands, however, have been severely damaged during recent decades, partly due to the lack of wetland ecosystem protection by authorities. To have a better historical understanding of the spatio-temporal dynamics of the wetlands, this study aims to map and characterize patterns of the loss and degradation of wetlands in the Yellow River Delta using a time series of remotely sensed images (at nine points in time) based on object-based image analysis and knowledge transfer learning technology. Spatio-temporal analysis was conducted to document the long-term changes taking place in different wetlands over the four decades. The results showed that the Yellow River Delta wetlands have experienced significant changes between 1973 and 2013. The total area of wetlands has been reduced by 683.12 km 2 during the overall period and the trend of loss continues. However, the rates and trends of change for the different types of wetlands were not the same. The natural wetlands showed a statistically significant decrease in area during the overall period (36.04 km 2 ·year −1 ). Meanwhile, the artificial wetlands had the opposite trend and showed a statistically significant increase in area during the past four decades (18.96 km 2 ·year −1 ). According to the change characteristics revealed by the time series wetland classification maps, the evolution process of the Yellow River Delta wetlands could be divided into three stages: (1) From 1973From -1984, basically stable, but with little increase; (2) from 1984-1995, rapid loss; and (3) from 1995-2013, slow loss. The area of the wetlands reached a low point around 1995, and then with a little improvement, the regional wetlands entered a slow loss stage. It is believed that interference by human activities (e.g., urban construction, cropland creation, and oil exploitation) was the main reason for wetland degradation in the Yellow River Delta over the past four decades. Climate change also has long-term impacts on regional wetlands. In addition, due to the special geographical environment, the hydrological and sediment conditions and the location of the Yellow River mouth also have a significant influence on the evolution process of the wetlands.

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Section: Human Activitiesmentioning

confidence: 99%

Section: Conservation Policies and Projectsmentioning

confidence: 99%

Four Decades of Estuarine Wetland Changes in the Yellow River Delta Based on Landsat Observations Between 1973 and 2013

Zhu

Zhang

Huang

2018

Water

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“…Collectively, sediment deposition at the mouth of Yellow River have produced eight overlaid distributary lobes with the active lobe developing around the Qingshuigou channels formed in 1976. The delta plain covers an area of 7870 km 2 with average deposition thickness around 15 m (Bornhold et al, 1986;Wang et al, 2012). The hydrodynamics near Yellow River mouth is dominated by semidiurnal tides (tidal range around 1.5-2.0 m) and wind driven waves and residual currents (Bi et al, 2014).…”

Section: A Changing Ecohydrological Environment Of Yrd Wetlandmentioning

confidence: 99%

An overview of ecohydrology of the Yellow River delta wetland

Hua

Chen

Luo

2016

Ecohydrology & Hydrobiology

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“…Wetland changes in Yellow River delta have been analyzed in previous studies (Ye et al, 2004;Li et al, 2009;Wang et al, 2012;Chen et al, 2016). However, those studies only partially analyzed the causes of decline in marsh area.…”

Section: Introductionmentioning

confidence: 99%

Investigating marsh sediment dynamics and its driving factors in Yellow River delta for wetland restoration

Kang

Shao

et al. 2016

Ecological Engineering

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a b s t r a c tThe wetlands of the Yellow River delta play important roles for Asian and west Pacific birds during migration. Marshes are the main component of wetlands in the delta, and their coverage area has experienced a decreasing trend for the last few decades. Wetland changes in the Yellow River delta have been analyzed in previous studies; however, those studies only partially analyzed the causes of the decline. Using statistical and spatial analysis based on observational data and remote sensing imagery for the period of 1986-2005, we found that the annual mean temperature and annual precipitation tended to increase, and the evapotranspiration and the moisture index tended to decrease. Consequently, these climate factors led to a significant decrease in river runoff, which resulted in decreased water supply for the marshes in the delta. A Wetland Restoration Project was launched in 1992, and it successfully conserved marshes within a relatively small area. However, the inadequate water supply still resulted in an overall decrease in marsh area over the entire study area. These results provide more insights into managing wetlands eco-restoration.

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Wetland loss and degradation in the Yellow River Delta, Shandong Province of China

Cited by 90 publications

References 4 publications

Four Decades of Estuarine Wetland Changes in the Yellow River Delta Based on Landsat Observations Between 1973 and 2013

Four Decades of Estuarine Wetland Changes in the Yellow River Delta Based on Landsat Observations Between 1973 and 2013

An overview of ecohydrology of the Yellow River delta wetland

Investigating marsh sediment dynamics and its driving factors in Yellow River delta for wetland restoration

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