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LTER: Long-Term Research at the Jornada Basin (LTER-VI)

LTER：乔纳达盆地的长期研究 (LTER-VI)

基本信息

批准号：
1235828
负责人：
Debra Peters
金额：
$ 523.92万
依托单位：
New Mexico State University
依托单位国家：
美国
项目类别：
Continuing Grant
财政年份：
2012
资助国家：
美国
起止时间：
2012-12-01 至 2019-11-30
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1235828&HistoricalAwards=false
关键词：
LTER Long Term Research Jornada

项目摘要

The overall goal of the Jornada Basin Long Term Ecological Research Program is to understand and quantify the mechanisms that generate alternative natural and human-dominated states in dryland ecosystems, and to predict future states and their consequences for the provisioning of ecosystem services. Based on long-term databases beginning in 1858, research over the next six years will focus on five types of dynamics: (1) a shift from perennial grasslands to desertified shrublands, (2) a reversal to grassland states, (3) transitions among shrub-dominated states, (4) invasion by non-native grasses, and (5) transitions to human-dominated states. This research combines rigorous hypothesis testing through initiation of new experiments, novel integration of long-term studies to address new questions, forecasts of alternative future landscapes and consequences for ecosystem services under a changing environment, and extension of cross-site and regional studies. Simulation modeling will improve understanding of current patterns and prediction of future dynamics. Training opportunities will be provided for graduate and undergraduate students at four Hispanic-serving institutions in New Mexico, Arizona, and Texas. A K-12 and teacher-training program will provide inquiry-based curricula, field trips, teacher workshops, and public education events. Research findings will be distributed to scientists, land managers, and educators via workshops, seminars, and an on-line newsletter. International collaborations will occur on five continents (North and South America, Asia, Europe, Australia) to address the global challenge of increasing desertification.

Jornada流域长期生态研究方案的总体目标是了解和量化旱地生态系统中产生替代性自然和人为主导状态的机制，并预测未来状态及其对提供生态系统服务的影响。基于1858年开始的长期数据库，未来六年的研究将集中在五种类型的动态：（1）从多年生草原到荒漠化灌木地的转变，（2）草原状态的逆转，（3）灌木占主导地位的状态之间的转变，（4）非本地草的入侵，以及（5）向人类主导状态的转变。该研究通过启动新的实验，长期研究的新整合，以解决新的问题，预测未来的替代景观和生态系统服务在不断变化的环境下的后果，以及跨站点和区域研究的扩展，结合了严格的假设检验。模拟建模将提高对当前模式的理解和对未来动态的预测。培训机会将提供给研究生和本科生在四个拉美裔服务机构在新墨西哥州，亚利桑那州和得克萨斯州。K-12和教师培训计划将提供基于探究的课程，实地考察，教师研讨会和公共教育活动。研究结果将通过讲习班、研讨会和在线通讯分发给科学家、土地管理人员和教育工作者。将在五大洲（南北美洲、亚洲、欧洲、澳大利亚）开展国际合作，以应对荒漠化日益严重的全球挑战。

项目成果

期刊论文数量（14）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Germination and early establishment of dryland grasses and shrubs on intact and wind-eroded soils under greenhouse conditions

温室条件下完整和风蚀土壤上旱地草和灌木的发芽和早期建立

DOI：
10.1007/s11104-021-05005-9
发表时间：
2021
期刊：
Plant and Soil
影响因子：
4.9
作者：
Niu, Furong;Pierce, Nathan A.;Archer, Steven R.;Okin, Gregory S.
通讯作者：
Okin, Gregory S.

Shrub encroachment, landscape restoration, and intraguild predation

灌木侵占、景观恢复和行会内捕食

DOI：
10.1016/j.jaridenv.2021.104588
发表时间：
2021
期刊：
Journal of Arid Environments
影响因子：
2.7
作者：
Schooley, Robert L.;Bestelmeyer, Brandon T.;Wagnon, Casey J.;Coffman, John M.
通讯作者：
Coffman, John M.

Modeling landscape wind erosion processes on rangelands using the APEX model

使用 APEX 模型对牧场上的景观风蚀过程进行建模