نتایج جستجو برای: wetland protection
تعداد نتایج: 189592 فیلتر نتایج به سال:
[1] The character and quantity of dissolved organic carbon (DOC) were studied in nine small boreal streams and adjacent soils during two years, with focus on the spring snowmelt period. The streams cover a forest-wetland gradient, spanning from 0% to 69% wetland coverage. Lower values of the absorbance ratio measured at 254 nm and 365 nm (A254/A365), in both soil plots and streams, indicated th...
The United States has lost about half its wetland acreage since European settlement, and the effectiveness of current wetland mitigation policies is often questioned. In most states, federal wetland laws are overseen by the U.S. Army Corps of Engineers, but Michigan administers these laws through the state's Department of Environmental Quality (MDEQ). Our research provides insight into the effe...
Climate change will have a profound impact on coastal ecosystems, particularly, wetland cover types. It is therefore important that such changes are predicted so that appropriate adaptations can be suggested. This study investigated the changes of spatial distribution of four coastal wetland plant species in response to potential climate change in northeastern NSW, Australia. The study used BIO...
Increased droughts in southern Africa have noticed some appreciation of the role that partial wetland cultivation can play to address household food security. This has also witnessed some indication of possible relaxation of wetland cultivation restrictive policies in Zimbabwe. However, the general perceptions of society towards wetland cultivation remain unclear and critically important for po...
As “kidneys of the earth”, wetlands play an important role in ameliorating weather conditions, flood storage, and the control and reduction of environmental pollution. With the development of local economies, the wetlands in both the Amazon and Yangtze River Basins have been affected and threatened by human activities, such as urban expansion, reclamation of land from lakes, land degradation, a...
‘Wise use’ of wetland ecosystem services has implications for achieving sustainable development goals. Globally, almost 87% wetlands have been lost since 1700’s with losses projected to be much higher by 2050 in developing economies due urbanisation. Little is known about how this loss might impact people’s dependency at local scales the peri-urban landscapes. To understand perception from Dank...
Our research focuses on implementing multilevel governance of wetlands to achieve an effective participatory process and its overall positive effects wetland ecosystems their protection as well local sustainable development. The aim the is develop a methodology for establishing Wetland Contract, voluntary agreement foster management development wetlands, ensure greater coordination consensus bu...
Objectives Prediction of climate change impacts on terrestrial carbon fluxes is highly uncertain. Upland ecosystem models, even when constrained with flux tower data, fail to explain interannual variability in CO2 fluxes in the upper Midwest. One possible reason is lack of model mechanisms for wetland biogeochemistry and hydrology, where fluxes would be expected to vary with changes in depth to...
Human disturbance is one of the essential driving forces landscape evolution. The quantitative evaluation spatial and temporal characteristics evolution its relationship with human are great significance to regional ecological protection management crucial for achieving coordinated socioeconomic development ecological–environmental protection. In this study, we took coastal wetlands in northern...
The increasing population in the developing countries has rendered wetlands vulnerable to land use changes. Remote sensing offers a rapid and efficient means of data acquisition of ecosystems in time and space. The present study was undertaken to identify changes in the Harike wetland, a Ramsar site in the state of Punjab, India; and identify causal factors, as well as vulnerable areas threaten...
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