Integrating water and agricultural management under climate change

Crops in simplified, low-diversity agroecosystems assimilate only a fraction of the inorganic nitrogen (N) fertilizer inputs. Much of this N fertilizer is lost to the environment as N oxides, which degrade water quality and contribute to climate change and loss of biodiversity.

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Toward optimal soil organic carbon sequestration with effects of agricultural management practices and climate change in Tai-Lake paddy soils of China

Geoderma ◽

10.1016/j.geoderma.2016.04.001 ◽

2016 ◽

Vol 275 ◽

pp. 28-39 ◽

Cited By ~ 17

Author(s):

Liming Zhang ◽

Qianlai Zhuang ◽

Yujie He ◽

Yaling Liu ◽

Dongsheng Yu ◽

...

Keyword(s):

Climate Change ◽

Carbon Sequestration ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Management Practices ◽

Agricultural Management ◽

Paddy Soils ◽

Soil Organic Carbon Sequestration ◽

Tai Lake ◽

Organic Carbon Sequestration

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Quantifying the impacts of agricultural management and climate change on soil organic carbon changes in the uplands of Eastern China

Soil and Tillage Research ◽

10.1016/j.still.2017.06.005 ◽

2017 ◽

Vol 174 ◽

pp. 81-91 ◽

Cited By ~ 2

Author(s):

Liming Zhang ◽

Guangxiang Wang ◽

Qiaofeng Zheng ◽

Yaling Liu ◽

Dongsheng Yu ◽

...

Keyword(s):

Climate Change ◽

Organic Carbon ◽

Soil Organic Carbon ◽

Eastern China ◽

Agricultural Management

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Supplementary material to "SOC sequestration potentials for agricultural management practices under climate change"

10.5194/esd-2021-35-supplement ◽

2021 ◽

Author(s):

Tobias Herzfeld ◽

Jens Heinke ◽

Susanne Rolinski ◽

Christoph Müller

Keyword(s):

Climate Change ◽

Management Practices ◽

Agricultural Management ◽

Supplementary Material

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Monitoring agroecological transformation processes induced by climate and agricultural innovations over time and space

10.5194/egusphere-egu21-12627 ◽

2021 ◽

Author(s):

Heide Spiegel ◽

Julia Miloczki ◽

Bernhard Freyer ◽

Andreas Surböck ◽

Jürgen K. Friedel ◽

...

Keyword(s):

Climate Change ◽

Field Experiments ◽

Agricultural Land ◽

Arable Land ◽

Agricultural Management ◽

Soil Tillage ◽

Agroecological Zones ◽

Long Term Ecological Research ◽

Agricultural Innovations

Sustainable agricultural production of food, feed, fibre and fuel with limited agricultural land to cover human demands and at the same time to secure natural resources is currently one of the biggest global challenges. Changes in agricultural management to ensure fertile soils, stable yields and product qualities and to avoid adverse environmental impacts, affect various soil and plant characteristics, agrobiodiversity and the micro-climate of agroecosystems.Long-term field experiments (LTEs) are indispensable to detect and understand impacts of climate (drought, heat, floods, frost) and agricultural innovations on soils and plants. Amongst agricultural innovations are adaptions of crop rotations to climate change, efficient fertilisation systems with and without livestock, reduced soil tillage intensity, the conversion of a whole landscape section from conventional to organic farming and introducing landscape elements like flowering strips or hegdes that serve, e.g., as habitats for pollinators and beneficials.For the evaluation of impacts of climate change and agricultural innovations, researchers of agricultural long-term ecological research (LTER) sites in Austria have developed indicators to enable the systematic comparison of long-term trials impact on soil-plant systems in different agroecological zones of Austria and Europe, respectively, including different agro-ecosystems, e.g., arable land and grassland. Examples for soil indicators include soil characteristics like organic carbon, nutrients and contaminants, biological and physical (e.g., porosity, structure) indicators that have already been measured since many years in various field experiments. Embedded in long-term socio-ecological regions (LTSER), which allow analyzing long-term socio-economic and biophysical drivers of change in agricultural management, these agricultural LTER sites contribute crucial insights into the interaction between nature and society.

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Water fluxes and coupled nitrogen export in a managed prealpine grassland: identifying the effects of climate change and agricultural management

10.5194/egusphere-egu2020-5198 ◽

2020 ◽

Author(s):

Katrin Schneider ◽

Ralf Kiese

Keyword(s):

Climate Change ◽

Water Balance ◽

Groundwater Recharge ◽

Elevation Gradient ◽

Agricultural Management ◽

Agricultural Practice ◽

Soil Cores ◽

Water Fluxes ◽

Water Balance Components ◽

Nitrogen Export

It is generally accepted that climate change likely alters the ratio of water balance components in mid-latitude environments. Higher temperatures and an elevated water vapour deficit may increase evapotranspiration rates and reduce groundwater recharge rates. At the same time, agricultural management may interfere these effects, e.g. through reduced plant transpiration rates due to a high cutting frequency.The study analyses climate change and agricultural management effects on the water fluxes and coupled nitrogen export in a prealpine grassland. It makes use of the grassland lysimeters, which are part of the TERENO preAlpine observatory in southern Bavaria (Germany). In a &#8220;space-for-time&#8221; approach, soil cores with an area of 1 m&#178; and a depth of 1.5 m have been excavated and translocated to lower elevations. Furthermore, soil cores from the same area (that have not been translocated to lower elevations) act as control plots in the lysimeter network. The elevation gradient between the highest (864 m a.s.l.) and lowest (695 m a.s.l.) lysimeter station accounts for a temperature increase of approx. 2&#176;C, while precipitation decreases from approx. 1350 mm a-1 to approx. 960 mm a-1. Following local agricultural practice, intensive as well as extensive grassland management is applied at the lysimeters: intensive management refers to a higher frequency of cutting (up to five times per year) and manure application (approx.. 250 kg N ha-1 a-1) than extensive management (two cuts and approx. 80 kg N ha-1 a-1).The study compares the effects of temperature and precipitation changes (i.e. elevated temperature and decrease in precipitation) and different agricultural management on water balance components (evapotranspiration, groundwater recharge, Ammonia and Nitrate fluxes) measured at the lysimeters. Preliminary result show that the ratio of evapotranspiration to precipitation increases in the climate change treatment. Water-bound nitrogen fluxes are comparably low on all sites, indicating that nitrogen uptake by plant plants is dominating over nitrogen leaching.

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Geoarchaeology of Holocene oasis formation, hydro-agricultural management and climate change in Masafi, southeast Arabia (UAE)

Quaternary Research ◽

10.1017/qua.2018.142 ◽

2019 ◽

Vol 92 (1) ◽

pp. 109-132 ◽

Cited By ~ 2

Author(s):

Louise Purdue ◽

Julien Charbonnier ◽

Emmanuelle Régagnon ◽

Carine Calastrenc ◽

Thomas Sagory ◽

...

Keyword(s):

Climate Change ◽

United Arab Emirates ◽

Water Availability ◽

Late Holocene ◽

Climatic Conditions ◽

Agricultural Management ◽

Environmental Data ◽

Soil Resources ◽

Humid Area ◽

Dynamic Links

AbstractOases are subject to decreasing resources and changing human activities. Fully aware of their rich heritage, the United Arab Emirates (UAE) have undertaken work to preserve and revitalize these oases. However, there is a clear lack of understanding of the dynamic links between climate change, hydraulic and agricultural management, and socioeconomic activities. To clarify these links, our team conducted a systematic geoarchaeological, geophysical, spatial, and chronological study of the Masafi oasis, UAE. Results indicate the existence of a natural humid area as early as the late Pleistocene (~18 cal ka BP). These conditions persist during the early-mid Holocene with drainage activation and soil development (~12–6.3 ka). During the late Holocene, after the emergence of the “artificial” oasis around ~3250 cal yr BP, cycles of intense management suggesting water availability (~3250–2380 cal yr BP; 550 cal yr BP) alternate with episodes of fluvial detritism (~2380–1870 cal yr BP; >550 cal yr BP) and scattered evidence of farming activities with complex hydroclimatic signatures (~2300–550 cal yr BP). These results, together with regional environmental data, indicate that water and soil resources were available and exploited strategically throughout the Holocene despite adverse climatic conditions, and the oasis of Masafi could have acted as a desertrefugium.

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