Land Use Suitability

Land use suitability tools and assessment processes for increasing land use diversity and delivering better community outcomes.

Project Details Ngā taipitopito

Project Status:
Completed
Challenge funding:
$2,750,000
Research duration:
June 2016 – December 2019

Collaborators Ngā haumi

AgResearch | Environment Canterbury | Environment Southland | GNS Science | Manaaki Whenua Landcare Research | NIWA | Plant & Food Research | Streamlined Environmental | Te Tumu Paeroa | Tipa and Associates | University Of Otago

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What are we doing?E aha ana mātou?

Land use planning in New Zealand currently focuses on what a parcel of land is capable of producing, with the increasing use of regulatory limits. These limits will be more easily met when land use planning considers the conditions of water bodies downstream, and the economic, environmental, social and cultural values of the surrounding community.

We call this broader planning perspective ‘land use suitability’.

To enable this shift in perspective, we need more detailed understanding of the land’s natural attenuation processes, which reduce levels of contaminants like nitrogen and phosphorus, and the resilience of water bodies.

Land Use Suitability research is linking these natural processes with human interventions, mitigations and land-management choices, to make the consequences of our choices clearer and more predictable.

How can the research be used? Ka pēhea e whai take ai te rangahau?

  • This research developed the land-use suitability (LUS) framework, focused on conveying information about the productive potential of land and the susceptibility of water bodies connected to land parcels. This will support the development of tools for land owners and investors to evaluate a range of land uses suitable for individual land parcels, and for central and local government to estimate land-use effects such as contaminant loss.
  • This research has divided the country into typologies, used simulation modelling for 5 land uses on each typology, and used a combination of empirical modelling and direct transfer to extend from the typologies to coverage of all land parcels in the country. The approach has proven sound, but requires additional data to represent all land uses nationally.
  • A second phase of research will expand the scope to consider a broader range of constraints and pressures, including greenhouse gas emissions. It will add up to a dozen additional land uses, extended to all land parcels.
  • Researchers and collaborators have trialed the LUS assessment processes in real-world decision-making. Hawkes Bay Regional Council partnered with the LUS team to apply their research to decision-making processes. Environment Southland took a critical role in co-developing the LUS concept and providing reality checks and guidance about real-world applications. It tested application of Land Use Suitability (LUS) in the Oreti catchment in 2018.
  • The research team brought together every scrap of available spatial data in the country, in every possible model, to produce maps for every farmable parcel in Southland. A prototype land use planning support tool, the Land Use Suitability Analyser, was developed and tested using the Southland data, bringing together multiple existing tools (digital river network, Sparrow catchment model, Overseer nitrogen model, Land Use Capability classification, and spatial data layers with physiographic zones). This tool focused on nitrogen as the land use pressure of concern, and the impact of changing land use on water quality and farm profit. A national-scale pressure layer, incorporating lakes, was developed.
  • The LUS concept was discussed by the Land and Water Forum in advice to the Minister for the Environment about the allocation of nutrient discharge allowances on-farm and in a catchment. Scott Larned met with the Parliamentary Commissioner for the Environment staff to discuss applications of the LUS concept.
  • 7 industry stakeholders (DairyNZ, RaboBank, Fonterra, Beef + Lamb NZ, the Foundation for Arable Research, LandCorp, IrrigationNZ) are all actively collaborating with researchers to develop land use suitability tools into industry policy or advice.

Participation & engagement Te hunga i whai wāhi mai

  • Land Use Suitability has liaised with 6 regional councils (Environment Southland, Envionment Canterbury, Greater Wellington Regional Council, Waikato Regional Council, Environment Bay of Plenty, Horizons) on their current planning processes and the potential for application of the Land Use Suitability concept.
  • In collaboration with several runanga, cultural assessments were conducted at 170 sites in Otago and Canterbury, assessing land use impacts on Māori cultural values. The results of this work and its potential applications were discussed with three runanga in a hui series.
  • Land Use Suitability researchers participated in the Innovation Market hosted by the Collaboration Lab. Amy Whitehead explained and demonstrated the Land Use Suitability Analyser, and Scott Larned facilitated a discussion of land use, environmental effects and kaitiakitanga in the Te Waihora catchment. The target audience included researchers, entrepreneurs and the Next Generation Influencers.

Research team Te hunga i whai wāhi mai

Research Lead
Scott Larned
NIWA
Linda Lillburne
Manaaki Whenua Landcare Research
Ton Snelder
Land Water People
Simon Harris
Land Water People
Marc Schallenberg
University of Otago
Amy Whitehead
NIWA
Doug Booker
NIWA
Mike Beare
Plant & Food Research
Richard McDowell
AgResearch
Gail Tipa
Ngai Tahu
Tipa & Associates
Shannan Crow
Te Atiawa
NIWA
Tony van der Weerden
AgResearch
Anne-Gaelle Ausseil
Manaaki Whenua Landcare Research
Edmar Teixeira
Plant & Food Research

Tools & resources Ngā utauta me ngā rauemi

Guidance

Actions to Include in a Farm Environment Plan

This interactive infographic is a compilation of actions to decrease the loss of contaminants from agricultural land. Mitigation actions can be filtered by any of…
View Guidance
Map

Map of Surface Erosion

We developed the first national-scale map of surface erosion for New Zealand that can also be used at farm scale. The map is also the…
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Summary

If the climate is changing, will land use need to change?

The earth’s surface has gradually been warming up since the beginning of the 20th century – by as much as 1C in some places. One…
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Infographic

Stressor-Response Framework

Illustrating the relationship between land use, stressor type, stressor level and impacts
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Guidance

Using Cause and Effect Relationships to Enhance Freshwater Management

We’ve summarised research on how Aotearoa’s fresh water responds to stressors into a short Research Findings Brief. Using Lake Hayes near Queenstown as a scenario…
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Video

What the data tells us about our water

By bringing together multiple data sources, we can now see which catchments are under the most pressure, and whether applying all known and emerging on-farm…
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Academic outputs He whakaputanga ngaio

Journal Article

A Proposed New Approach to Identify Limiting Factors in Assessing Land Suitability for Sustainable Land Management

Making optimal use of scarce resources in developing countries is a major challenge for sustainable crop production. Characterization of factors limiting crop production is an…
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Journal Article

Developing an indicator of productive potential to assess land use suitability in NZ

The Land Use Suitability (LUS) concept is composed of three indicators describing the inherent productive and economic potential of land parcels (productive potential), the contribution…
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Journal Article

On the use of stressor-response relationships in the management of lake eutrophication

Since the 1960s, theoretical and empirical advances in limnology have offered lake managers different approaches to address lake eutrophication problems. The Vollenweider input–output model and…
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Journal Article

Incorporating Māori values into land management decision tools

Environmental sustainability and the long-term wellbeing of Māori (the indigenous people of New Zealand) are interdependent and degradation of landscapes risks the progressive degradation of…
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Journal Article

Nitrogen loads to New Zealand aquatic receiving environments: Comparison with regulatory criteria

There is concern about the deteriorating nutrient status of aquatic receiving environments in New Zealand. We estimated the amount by which current nitrogen (N) concentrations…
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Journal Article

The Land Resource Circle: Supporting land-use decision making with an ecosystem-service-based framework of soil functions

Land information has in the past focused on the key land and soil properties that physically or chemically support or limit the use of land.…
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In the media Mai i te ao pāpaho

Farmers Weekly, 7 December 2021
[Dr Donovan] says the national maps are not likely to be immediately useful to regional councils, catchment groups, or individual farmers who want to understand their farm, but in those cases, he recommends getting in touch to explore the appropriate options to develop a regional, catchment or individual farm map that accounts for specific grazing densities at paddock scales.
Farmers Weekly, 28 February 2020
Nitrate leaching will be higher and more variable with more extreme rain leading to more frequent nitrate leaching. The most noticeable increase modelled was in a Southland case study where annual leaching increases significantly with more spring rain and more frequent extreme rain but more research is needed to confirm the trend.
Dairy News, 4 March 2020
The report also identified for dairy, sheep and beef that heat stress will be an increased risk for animal health, with about two additional weeks of risk for moderate heat stress by the 2090s, and a more pronounced risk of severe heat stress. Provision of more shade and shelter will be needed.
NZ Herald, 26 February 2020
"We hope this research will further encourage long-term strategic adaptation, such as diversifying cultivars, shifting sowing dates and planning additional shade and shelter" said Anne-Gaelle Ausseil of Manaaki Whenua Landcare Research, principle investigator in the research.
Stuff, 27 February 2020
Depending on the farm or vineyard, adapting to climate change might mean planting different grape varieties, sowing maize for cow-feed earlier, changing fertiliser patterns, or protecting cows from over-exertion on hot days, the research says. The key is to start planning early.
Stuff, 17 October 2019
Extreme events may impact on loss of nutrients into rivers, animal heat stress in summer, or late frosts during flowering grapes. How do we make decisions about land use that can accommodate all this?
NZ Geographic, Mar-Apr 2018
“Cynical people would recognise that we’re trying to figure out to what degree we might have our cake and eat it, too. Of course, the truth is, you can’t” – Scott Larned
NZ Geographic, July-August 2017
Scott Larned, a NIWA ecologist with a strong interest in how ecosystems interact with water, told me it can take 60 to 100 years for rainwater falling on the upper Canterbury Plains to percolate to the ocean

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