Wetland ecosystems perform a multitude of services valued by society and provide critical habitat for migratory birds and other wildlife. Despite their importance, wetlands have been lost to different local, regional, and global drivers. Remaining wetlands are extremely sensitive to changing temperature and precipitation regimes. Management of grassland areas in wetland catchments may be an effective strategy for counteracting potentially negative impacts of climate change on wetlands. Our objective was to estimate the effects of climate changes on wetland hydrology, and to explore strategies for increasing surface-water inputs to wetlands. We coupled a field study with process-based simulation modeling of wetland-water levels. We found that climate change could decrease the number of wetlands that hold ponded water during the waterfowl breeding season by 14% under a hot wet scenario or 29% under a hot dry scenario if no upland-management actions were taken. Upland burning reduced pond losses to 9% (hot wet) and 26% (hot dry). Upland grazing resulted in the smallest loss of ponded wetlands, 6% loss under the hot-and-wet scenario and 22% loss under the hot-and-dry scenario. Overall, water inputs could be increased by either burning or grazing of upland vegetation thereby reducing pond losses during the waterfowl breeding season. While field results suggest that both grazing and burning can reduce the vegetative structure that could lead to increases in runoff in grassland catchments, our model simulations indicated that additional actions may be needed for managers to minimize future meteorologically driven water losses.

湿地生态系统提供了社会所重视的多种服务，并为候鸟和其他野生动植物提供了重要的栖息地。尽管具有重要意义，但湿地已被不同的地方，区域和全球司机所迷失。其余的湿地对温度和降水状况的变化极为敏感。管理湿地流域的草地面积可能是抵消气候变化对湿地的潜在负面影响的有效策略。我们的目标是评估气候变化对湿地水文学的影响，并探索增加对湿地的地表水投入的策略。我们将现场研究与基于过程的湿地水位模拟模型结合在一起。我们发现，如果不采取任何高地管理措施，在水禽繁殖季节，气候变化可能会使在水禽繁殖季节内积水的湿地数量减少14％，而在炎热干燥情况下减少29％。高地燃烧减少了池塘损失，分别为9％（热湿）和26％（热干）。高地放牧导致池塘湿地损失最小，在热湿情况下损失6％，在干热情况下损失22％。总体而言，可以通过燃烧或放牧高地植被来增加水的投入，从而减少水禽繁殖季节的池塘损失。田间研究结果表明，放牧和焚烧均可减少植物的营养结构，从而导致草地流域径流增加，