Red-crowned Cranes (Grus japonensis) habitat changes in China from 1980 to 2020: Spatio-temporal distribution.

The Red-crowned Crane (Grus japonensis) is a species unique to Asia, with a global population of about 3430. It was a Class I protected wild animal in China and was listed as vulnerable on the World Conservation Union (IUCN) Red List. The Red-crowned Crane was at the top of the food chain of wetland ecosystems and was one of the flagship species for wetland biodiversity conservation.

WITHDRAWN: Restoration of the ecological network structure based on the spatiotemporal changes of the wintering Grus japonensis habitat in the Yancheng coastal area.

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Research on water quality improvement of plain irrigation area based on multi-scenario simulation.

Water diversion projects have proven to be effective interventions to improve water quality in irrigation ditches. This study focused on quantifying the water quality improvement by utilizing a hydrodynamic water quality model in Funing County, Yancheng City. The model performed a spatial analysis of pollution concentrations across the study area.

Study on spatio-temporal variation and hydrological connectivity of tidal creek evolution in Yancheng coastal wetlands.

The ecological changes have attracted extensive international attention at Jiangsu Yancheng coastal wetland on the west coast of the Pacific Ocean in recent decades. Tidal creek is an important channel for material exchange between sea and land and plays an important role in the connectivity of water in coastal wetlands. The tidal flats from Sheyang Port to Liangduo Estuary in Jiangsu Province were selected and divided into five sub-study areas using each port as a split point.

[Effects of small irrigation facilities on hydrological connectivity of ditches in North Jiangsu Plain, China.].

Hydrological conditions in the plains irrigation area are complex, which are strongly affected by small irrigation facilities and human management. In this study, the connectivity index of ditch network and the influence index of rural small irrigation facilities were constructed to quantitatively analyze the hydrological connectivity of a typical plain irrigation area, Fudong irrigation area, in north Jiangsu Province. The self-organizing feature map (SOM) analysis method was used to identify the effects of small irrigation facilities on the spatial heterogeneity of ditch network structure connectivity.

[Sea-land hydrological connectivity of coastal wetlands based on water salinity and hydrological structure.].

In this study, with water salinity as the core index, sea-land hydrological connectivity index was constructed by integrating the hydrological structure connectivity index (water surface ratio, intake and outtake density, sea-land distance, and ditch distance). Based on multi-scale spatial analysis, we carried out the spatial quantitative analysis and classification of sea-land hydrological connectivity in the study area under an evaluation unit of 150 m×150 m grid. The results showed that sea-land hydrological connectivity gradually decreased from sea to land, with different decreasing rates.

Study on habitat suitability and environmental variable thresholds of rare waterbirds.

The conservation level of rare waterbirds reflects the quality of the regional ecological environment and wetlands, and suitable habitat patches and good environmental conditions are bases to support the activities of rare species in habitats. Establishing these conditions is also an important goal of habitat landscape and functional restoration. However, lack of these conditions limits population protection and habitat restoration of rare species.