Хамгаалалтын зурвас
ХӨТӨЛБӨР · ТООСНЫ ЭСРЭГ ЗУРВАС
Хотын зах болон фермийн хил дээрх шугаман, олон эгнээ модны зурвас — салхины дагуу салхины хурдыг 40-60%-иар бууруулж, агаар дахь тоосыг хүн амын төвд хүрэхээс нь өмнө барихаар зохион бүтээгдсэн.
Энэ хөтөлбөр яагаад бий болсон бэ
Spring dust storms originating in the Mongolian steppe carry millions of tonnes of sediment east — into Korea (NIER estimates $5-7B/yr economic damage), Japan and northern China. Shelter belts at the right places break wind speed and trap particulate matter close to source. They're the most cost-effective dust mitigation tool available.
Хэрхэн ажилладаг
- 1
Wind analysis
Position the belt perpendicular to prevailing winds (NW in most of Mongolia). 10-year wind-rose data from Mongolia's NAMHEM.
- 2
Multi-row design
3-5 rows of mixed-height species. Tallest (poplar) at upwind edge, denser middle (elm), shorter (sea buckthorn) at downwind face for porosity.
- 3
Linear plantings 50m+
50m minimum for a meaningful shelter effect. Longer belts (200m+) for city edge. 1.5m within row spacing, 2-3m between rows.
- 4
3 жилийн арчилгаа
Year 1 watering + windbreak fencing protecting young trees. Year 2-3 monitoring including downwind dust deposition measurement.
- 5
Downwind audit
Y3 audit measures wind speed reduction at 5×, 10×, 20× tree height downwind, plus particulate-matter capture. Belt is replanted if it fails to meet 40% reduction target.
Бид хаана тарьдаг
- Töv (UB corridor)
- Дархан-Уул
- Орхон
- Сүхбаатар
- Говьсүмбэр
Хэмжсэн нөлөөлөл
- Wind speed reduction
- 40-60% at 5× height downwind
- Protected zone
- ~30× tree height downwind
- 50m belt protects
- ~1,500 m² downwind area