Effects of land use intensification and soil management practices on field water cycles and water use efficiency

土地利用集约化和土壤管理实践对田间水循环和水利用效率的影响

基本信息

项目摘要

In the rural-urban interface of Bangalore water is an increasingly limited factor in crop production. Intensification of land use, transitions in soil management practices and the urbanization driven increase in water use are expected to exert additional pressure on the already scarce water resources. Water saving strategies by implementing efficient irrigation systems for water demanding crops (e.g. vegetables, grapes) or optimizing soil moisture conserving management approaches (e.g. mulching, humus management, increase in water use efficiency) will be crucial factors for sustaining future crop production in this region. This project aims at investigating the effects of agricultural transformation in the course of urbanization on the field water cycle. We will analyze changes in hydraulic and physical soil functions with land use intensification along a transect representing the transition from rural to urban areas (short rural-urban interface, RUI). Physical soil properties will be determined both by lab methods using representative undisturbed soil samples and in the field (e.g. infiltrability, soil moisture dynamics, shear strength and penetrometer resistance). Investigations will be carried out (i) on-station under researcher managed conditions (with factors irrigation, N-level and crop rotation) at the experimental station at UAS/Bangalore and (ii) on-farm managed by farmers with two levels of water management (rainfed vs. irrigated) combined with two levels of crop diversity (monoculture vs. polyculture) at selected farms along the urban-rural gradient. On-farm field analysis will be done in nested grids at several times of the year in order to derive farm scale spatial and temporal distribution of soil properties using geostatistical approaches. To calculate field water balances, water and rain use efficiencies for the various treatments (e.g. N application, irrigation, crop diversity) we will parameterize a deterministic transport model (HYDRUS) combining the soil physical measurements from the lab and the field. The model will be calibrated and validated based on in situ data of soil moisture and temperature which are obtained by monitoring profiles installed at the on-station experimental sites of the UAS. The validated model provides a physically based tool to predict soil water availability and fluxes in the SPAC and can potentially be coupled with crop simulation models to assess crop performance under varying management and climate scenarios.
在班加罗尔的城乡交界处,水对作物生产的影响越来越有限。土地利用的集约化、土壤管理做法的转变以及城市化推动的用水量增加,预计将给本已稀缺的水资源带来额外压力。通过对需水作物(如蔬菜、葡萄)实施高效灌溉系统或优化土壤水分保持管理方法(如覆盖、腐殖质管理、提高水分利用效率)的节水战略将是维持该地区未来作物生产的关键因素。本项目旨在研究城市化进程中农业转型对农田水循环的影响。我们将分析代表从农村向城市过渡的样带(短城乡交界,RUI)上,随着土地利用集约化,土壤水力和物理功能的变化。土壤物理性质将通过使用典型的原状土壤样本的实验室方法和现场方法(例如渗透性、土壤水分动力学、剪切强度和渗透阻力)来确定。调查将在UAS/班加罗尔试验站进行:(I)在研究人员管理的条件下(包括灌溉、氮素水平和轮作)在试验站进行调查;(Ii)在沿城乡梯度的选定农场,由农民管理农场,实行两种水平的水管理(雨养和灌溉),并结合两种水平的作物多样性(单一栽培和多种栽培)。农田田间分析将在一年中的几个时间在嵌套网格中进行,以便使用地质统计学方法得出农场规模、土壤性质的空间和时间分布。为了计算不同处理(如施氮量、灌溉、作物多样性)的田间水量平衡、水分和雨水利用效率,我们将结合实验室和田间的土壤物理测量结果,对确定性传输模型(Hydrus)进行参数化。该模型将根据安装在无人机实验场的监测剖面获得的土壤水分和温度的现场数据进行校准和验证。经过验证的模型提供了一种基于物理的工具来预测SPAC中的土壤水分可用性和通量,并可能与作物模拟模型相结合,以评估不同管理和气候情景下的作物表现。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Professor Dr. Matthias Gassmann其他文献

Professor Dr. Matthias Gassmann的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

相似国自然基金

基于重要农地保护LESA(Land Evaluation and Site Assessment)体系思想的高标准基本农田建设研究
  • 批准号:
    41340011
  • 批准年份:
    2013
  • 资助金额:
    20.0 万元
  • 项目类别:
    专项基金项目
基于Sparse-Land模型的SAR图像噪声抑制与分割
  • 批准号:
    60971128
  • 批准年份:
    2009
  • 资助金额:
    30.0 万元
  • 项目类别:
    面上项目
陆面过程模拟中参数的不确定性和随机误差传播研究
  • 批准号:
    40775041
  • 批准年份:
    2007
  • 资助金额:
    30.0 万元
  • 项目类别:
    面上项目

相似海外基金

Collaborative Research: MRA: Estimating and forecasting nonstationary, multi-scale climate and land-use effects on avian communities
合作研究:MRA:估计和预测非平稳、多尺度气候和土地利用对鸟类群落的影响
  • 批准号:
    2213566
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Collaborative Research: MRA: Estimating and forecasting nonstationary, multi-scale climate and land-use effects on avian communities
合作研究:MRA:估计和预测非平稳、多尺度气候和土地利用对鸟类群落的影响
  • 批准号:
    2213565
  • 财政年份:
    2023
  • 资助金额:
    --
  • 项目类别:
    Continuing Grant
Development of a multiscale sediment connectivity model to improve global sediment yield predictions and study the effects of land use and climate change on soil erosion
开发多尺度沉积物连通性模型,以改善全球沉积物产量预测并研究土地利用和气候变化对土壤侵蚀的影响
  • 批准号:
    559400-2021
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
    Postgraduate Scholarships - Doctoral
Investigating associations and mediating effects between climate and mental health and violence in informal settlements in Kenya
调查肯尼亚非正规住区气候与心理健康和暴力之间的关联和中介效应
  • 批准号:
    10452316
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
Investigating associations and mediating effects between climate and mental health and violence in informal settlements in Kenya
调查肯尼亚非正规住区气候与心理健康和暴力之间的关联和中介效应
  • 批准号:
    10592335
  • 财政年份:
    2022
  • 资助金额:
    --
  • 项目类别:
Development of a multiscale sediment connectivity model to improve global sediment yield predictions and study the effects of land use and climate change on soil erosion
开发多尺度沉积物连通性模型,以改善全球沉积物产量预测并研究土地利用和气候变化对土壤侵蚀的影响
  • 批准号:
    559400-2021
  • 财政年份:
    2021
  • 资助金额:
    --
  • 项目类别:
    Postgraduate Scholarships - Doctoral
Modelling Interacting and Cumulative Effects of Climate and Land-use on Rainbow Trout
模拟气候和土地利用对虹鳟鱼的相互作用和累积影响
  • 批准号:
    563593-2021
  • 财政年份:
    2021
  • 资助金额:
    --
  • 项目类别:
    University Undergraduate Student Research Awards
Assessing Community Concordance Metrics for Assessing Anthropogenic Land Use Effects on Aquatic Ecosystem Integrity in the North Saskatchewan River
评估社区一致性指标,以评估人为土地利用对北萨斯喀彻温河水生生态系统完整性的影响
  • 批准号:
    554098-2020
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
    Alexander Graham Bell Canada Graduate Scholarships - Master's
Built Environment Assessment through Computer visiON (BEACON): Applying Deep Learning to Street-Level and Satellite Images to Estimate Built Environment Effects on Cardiovascular Health
通过计算机视觉进行建筑环境评估 (BEACON):将深度学习应用于街道和卫星图像,以估计建筑环境对心血管健康的影响
  • 批准号:
    10192819
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
Built Environment Assessment through Computer visiON (BEACON): Applying Deep Learning to Street-Level and Satellite Images to Estimate Built Environment Effects on Cardiovascular Health
通过计算机视觉进行建筑环境评估 (BEACON):将深度学习应用于街道和卫星图像,以估计建筑环境对心血管健康的影响
  • 批准号:
    10675445
  • 财政年份:
    2020
  • 资助金额:
    --
  • 项目类别:
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了