How people interact with the environment
What the standard means by people interacting
- Aspect 4 is how people interact with the environment, and the standard says that interaction may be cultural, economic or political. Those three words are the categories to plan with.
- The stem shape is fixed: Name ONE person or group who interacts with the environment, then explain how and why. The naming line comes first, as always.
- Name a specific group, not "people". Ngāi Te Ruru, pastoral runholders, the national park administrator, the hydro operator, trampers — each behaves differently, which is the point.
- Interaction runs both ways. People change the environment, and the environment constrains what people can do. An answer with only one direction is half an answer.
- Interaction is not the same as perception. Aspect 4 is what people do; aspect 5 is what they think. Keep them separate or both answers get thin.
Cultural, economic and political — the three kinds
- Cultural interaction is use and meaning: seasonal food gathering, place names, trails, recreation, spiritual significance. In the invented Awakura environment, Ngāi Te Ruru used the valley as a route and a food store, leaving trails and seasonal camps.
- Economic interaction is production and income: the 1860s merino runs on the burnt tussock of the Rangitoto Downs, the Manaia dam generating electricity, and the 480,000 visitors a year the park now receives.
- Political interaction is rules and decisions: the 1954 declaration of Awakura National Park, the 1978 consent that raised the lake 6 m for generation, and the current co-management arrangement between iwi and the Crown.
- Most real interactions are more than one kind at once, and saying so is a good use of geographic terminology. The dam is economic in purpose and political in how it was authorised.
- Every interaction should be tied to a place inside the environment, not to the environment as a whole. The runholders acted on the downs, not on the divide.
How the environment constrains people
- Relief limits access. A 2,410 m divide with slopes over 45° means one road, and the state highway follows the trough floor because there is nowhere else for it to go.
- Climate limits land use. 6,400 mm a year in the west rules out cropping; 780 mm in the east rules out anything but extensive grazing without irrigation.
- Soils limit productivity. Steepland soils under 20 cm cannot carry stock at any density, so the western slopes were never farmed regardless of who owned them.
- Hazard limits settlement. A braided channel that can shift hundreds of metres in a flood is why Awakura township sits on a terrace above the floodplain rather than on it.
- The constraint is the reason for the pattern. When a question asks why people interact as they do, the natural characteristics supply the answer.
How people change the environment
- Vegetation change is usually the largest and fastest. The 1860s burning converted the eastern tussock to browntop pasture, and it has not reverted in 160 years.
- Hydrological change follows infrastructure. Raising Lake Manaia by 6 m in 1978 drowned the lake margin, altered the outlet flow regime downstream, and changed the sediment budget of the braided reach.
- Soil change follows vegetation change. Removing the cover on the steeper downs margins increased slips, and the soil lost was the part that would have supported regrowth.
- Protection is also a change, not the absence of one. The 1954 park declaration stopped burning and grazing on the western side, and the vegetation there is now recovering along a path it would not otherwise have taken.
- Quantify the change, and date it. The tussock was burnt is weak; the eastern downs were burnt from the 1860s and still carry browntop 160 years later is evidence.
Concepts that fit this aspect
- Sustainability — is the use able to continue without degrading the resource? Hydro generation and grazing give different answers.
- Perspectives — different groups want different things from the same valley, and the conflicts are the interesting material.
- Change — human interaction is the fastest agent of change operating in most environments today.
- Interaction itself — the standard names it, so use the word and show the arrow running both ways.
Worked Example
Worked example
Name ONE group of people who interact with a large natural environment you have studied. Explain how and why they interact with it.
Answer:
Step 1 — name the group and the kind of interaction.
The group is the hydro-electricity operator at the Manaia dam, and the interaction is primarily economic, authorised politically by a resource consent.
Step 2 — explain how they interact, with figures.
Under a consent granted in 1978, the operator raised the level of Lake Manaia by 6 m behind its natural moraine dam, using the lake as a storage reservoir. Water is released through the station on the outlet, and the release is varied to match electricity demand rather than to match natural inflow.
Step 3 — explain the consequences, because "how" includes what followed.
Raising the lake drowned 6 m of the former shoreline and the vegetation on it. Below the dam, the flow regime changed from one driven by spring snowmelt peaks to one driven by daily demand, so the braided reach downstream now receives less of the high flows that used to move its bedload. Less flushing means the channel aggrades faster than it otherwise would.
Step 4 — explain why the operator interacts here rather than somewhere else, and this is where the natural characteristics do the work.
This site was chosen because Awakura's natural characteristics happen to supply every requirement at once. Relief of 2,230 m gives the head that generation needs. 6,400 mm of rain a year at the divide plus a snowpack gives a large and reliable inflow. And a terminal moraine already lay across the valley, so a natural dam only had to be raised rather than built from nothing. The environment did not just permit this interaction; it is the reason it happened here.
Step 5 — close on the two-way link.
So the arrow runs both ways. The environment's relief, rainfall and glacial history determined that a dam was viable; the dam then altered the lake level, the downstream flow regime and the sediment budget of the braided reach.