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Responses of plant performance and functional diversity along a climate and land-use gradient in Mongolia

蒙古植物性能和功能多样性对气候和土地利用梯度的响应

基本信息

批准号：
239358027
负责人：
Professorin Dr. Christine Römermann
金额：
--
依托单位：
Institut für Ökologie (IE)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2017-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/239358027?language=en
关键词：
Responses plant performance functional diversity

项目摘要

Understanding responses of ecosystem processes to climate and land use change is a key challenge in ecology under both theoretical and applied aspects. So far it is not fully understood, however, how climate and land-use jointly affect ecosystem processes and services such as biomass production. The few available multi-site comparisons use species and functional trait diversity as predictors of ecosystem processes, but focus either on climate or land-use gradients. Here we propose to quantify the joint effect of land-use and climate on ecosystem processes and services. We chose the rangelands of Mongolia as study system, where precipitation gradients cover a wide range of environmental conditions. Work will be conducted at 15 localities from deserts to forest steppes, with local grazing gradients running perpendicular. We will analyse more than twenty selected focal plant species representing dominant and characteristic taxa, and measure their response to climate and land-use. The focus will be on a range of performance traits relevant for biomass productivity as the key ecosystem service in the region. This will be supplemented by a community level approach, where diversity, plant community composition and diversity of selected key traits is studied to capture responses of entire communities. We will use environmental variables and proxies for grazing as predictors for responses of both individual traits to be analysed in a Bayesian framework, as well as community responses such as species and functional diversity to be analysed with multivariate statistics. Both approaches will be combined in a synthetic modelling approach. This leads to an improved understanding of ecosystem responses with on-going global change, and represents a basis for management recommendations with respect to land-use intensity under different climate conditions in semi-arid to arid landscapes.

了解生态系统过程对气候和土地利用变化的响应是生态学在理论和应用方面的一个关键挑战。然而，到目前为止，还没有完全了解气候和土地利用如何共同影响生态系统过程和服务，如生物质生产。少数可用的多站点比较使用物种和功能性状多样性作为生态系统过程的预测因子，但侧重于气候或土地利用梯度。在此，我们建议量化土地利用和气候对生态系统过程和服务的共同影响。我们选择蒙古的牧场作为研究系统，那里的降水梯度覆盖了广泛的环境条件。工作将在从沙漠到森林草原的15个地方进行，当地的放牧梯度垂直。我们将分析20多个代表优势和特征分类群的焦点植物物种，并测量它们对气候和土地利用的响应。重点将放在与作为该地区关键生态系统服务的生物量生产力相关的一系列性能特征上。这将辅以群落水平的方法，研究多样性、植物群落组成和选定关键性状的多样性，以捕捉整个群落的反应。我们将使用环境变量和放牧代理作为个体特征响应的预测因子，在贝叶斯框架中进行分析，以及用多变量统计分析物种和功能多样性等群落响应。这两种方法将结合在一个综合建模方法中。这有助于更好地了解生态系统对持续全球变化的响应，并为半干旱至干旱景观中不同气候条件下土地利用强度的管理建议提供基础。

项目成果

期刊论文数量（5）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Global Assessment of the Non-Equilibrium Theory of Rangelands: Revisited and Refined

DOI：
10.1016/j.landusepol.2017.11.026
发表时间：
2017-07
期刊：
BioRN: Conservation (Topic)
影响因子：
0
作者：
J. Engler;H. von Wehrden
通讯作者：
J. Engler;H. von Wehrden

Intraspecific trait variation patterns along a precipitation gradient in Mongolian rangelands

DOI：
10.1016/j.flora.2018.11.008
发表时间：
2019-05
期刊：
Flora
影响因子：
1.9
作者：
B. Lang;Anna Geiger;Munkhzuul Oyunbileg;J. Ahlborn;H. Wehrden;K. Wesche;Batlai Oyuntsetseg;C. Röme
通讯作者：
B. Lang;Anna Geiger;Munkhzuul Oyunbileg;J. Ahlborn;H. Wehrden;K. Wesche;Batlai Oyuntsetseg;C. Röme

Recovery of Mediterranean steppe vegetation after cultivation: Legacy effects on plant composition, soil properties and functional traits