Заг (Говь)
ХӨТӨЛБӨР · ГОВЬ ЦӨЛИЙН ЗАХ
Говийн тэргүүн захад бөөгнөрүүлэн тарьсан заган бут — 100 мм-ээс бага хур тунадастай орчинд дасан зохицсон цорын ганц төрөл зүйл бөгөөд хөдөлгөөнт элсийг бэхэлж, цөлжилтийг удаашруулдаг гүн үндэстэй.
Энэ хөтөлбөр яагаад бий болсон бэ
The Gobi expands an estimated 3,600 km² per year (UNCCD). Conventional tree species cannot survive its <100mm annual rainfall. Saxaul evolved here: deep tap root, lateral root mat, fleshy stems that store water. Planting saxaul along the leading edge of the desert physically anchors sand dunes and slows expansion — there is no substitute species for this ecological niche.
Хэрхэн ажилладаг
- 1
Locate moving sand fronts
Survey shifting dune fronts at the leading edge of the Gobi using NASA MODIS imagery, ground-truth with local herders. Plant where movement is active, not where the desert is stable.
- 2
Cluster plantings
10 saxaul per cluster, 5m within-cluster spacing. Clusters spaced 20m apart. This pattern out-performs straight rows by 3-4× survival in Gobi conditions.
- 3
Hand-planted with windbreak fencing
Mechanised planting fails on shifting sand. Hand-dug planting holes, protective windbreak fencing for the first 2 years.
- 4
Conservative watering
Year 1 watering only if rainfall <50mm — over-watering creates dependence. Year 2-3 fully rain-fed.
- 5
Y3 survival + dune-movement audit
Survival audit plus dune-front position survey to confirm the saxaul has actually halted sand advance, not just lived.
Бид хаана тарьдаг
- Говь-Алтай
- Баянхонгор
- Дундговь
- Дорноговь
- Өмнөговь
Хэмжсэн нөлөөлөл
- Saxaul / ha planted
- ~600 shrubs
- Sand anchoring
- ~0.6 ha stabilised / 1 ha planted
- Tap root depth
- 5-7 m (deeper than any local species)