当前位置: X-MOL 学术Rangel. Ecol. Manag. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Forum: Critical Decision Dates for Drought Management in Central and Northern Great Plains Rangelands
Rangeland Ecology & Management ( IF 2.4 ) Pub Date : 2019-11-06 , DOI: 10.1016/j.rama.2019.09.005
Alexander J. Smart , Keith Harmoney , J. Derek Scasta , Mitchell B. Stephenson , Jerry D. Volesky , Lance T. Vermeire , Jeffrey C. Mosley , Kevin Sedivec , Miranda Meehan , Tonya Haigh , Justin D. Derner , Mitchel P. McClaran

Ranchers and other land managers of central and northern Great Plains rangelands face recurrent droughts that negatively influence economic returns and environmental resources for ranching enterprises. Accurately estimating annual forage production and initiating drought decision-making actions proactively early in the growing season are both critical to minimize financial losses and degradation to rangeland soil and plant resources. Long-term forage production data sets from Alberta, Kansas, Montana, Nebraska, North Dakota, South Dakota, and Wyoming demonstrated that precipitation in April, May, and June (or some combination of these months) robustly predict annual forage production. Growth curves from clipping experiments and ecological site descriptions (ESDs) indicate that maximum monthly forage growth rates occur 1 mo after the best spring month (April to June) precipitation prediction variable. Key for rangeland managers is that the probability of receiving sufficient precipitation after 1 July to compensate for earlier spring precipitation deficits is extremely low. The complexity of human dimensions of drought decision-making necessitates that forage prediction tools account for uncertainty in matching animal demand to forage availability, and that continued advancements in remote sensing applications address both spatial and temporal relationships in forage production to inform critical decision dates for drought management in these rangeland ecosystems.



中文翻译:

论坛:大平原中北部和北部平原干旱管理的关键决策日期

大平原中部和北部牧场的牧场主和其他土地管理者面临着反复干旱,这对牧场企业的经济回报和环境资源产生了负面影响。在生长期早期准确估计草料年产量并主动采取干旱决策行动,对于最大限度地减少经济损失和对牧场土壤和植物资源的退化至关重要。来自艾伯塔省,堪萨斯州,蒙大拿州,内布拉斯加州,北达科他州,南达科他州和怀俄明州的长期饲料产量数据集表明,4月,5月和6月(或这些月份的某些组合)的降水量有力地预测了年度饲草产量。修剪实验和生态位点描述(ESD)的生长曲线表明,最佳春季月份(4月至6月)降水预测变量后1个月出现了最大的月饲草生长率。牧场管理者的关键是,在7月1日之后获得足够的降水以弥补较早的春季降水不足的可能性非常低。人为因素导致干旱决策的复杂性,因此必须使用草料预测工具来考虑将动物需求与草料可利用性相匹配的不确定性,并且遥感应用的不断发展解决了草料生产中的时空关系,从而为干旱的关键决策日期提供了依据这些牧场生态系统中的管理。牧场管理者的关键是,在7月1日之后获得足够的降水以弥补较早的春季降水不足的可能性非常低。人为因素导致干旱决策的复杂性,因此必须使用草料预测工具来考虑将动物需求与草料可利用性相匹配的不确定性,并且遥感应用的不断发展解决了草料生产中的时空关系,从而为干旱的关键决策日期提供了依据这些牧场生态系统中的管理。牧场管理者的关键是,在7月1日之后获得足够的降水以弥补较早的春季降水不足的可能性非常低。人为因素导致干旱决策的复杂性,因此必须使用草料预测工具来考虑将动物需求与草料可利用性相匹配的不确定性,并且遥感应用的不断发展解决了草料生产中的时空关系,从而为干旱的关键决策日期提供了依据这些牧场生态系统中的管理。

更新日期:2020-04-21
down
wechat
bug