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Good practice Imported

Yatir Forest — Long-Term Semi-Arid Afforestation Carbon Sink (Israel)

Israel · Yatir · See the Israel profile

Evidence: Observational / pre–post Top 47% 47/100 · Ask Evidence Copilot about this practice

Since 1964, KKL-JNF's ~3,000-hectare pine plantation in Israel's northern Negev has become one of the world's longest-running semi-arid forest carbon-flux studies, but Weizmann Institute research shows its cooling benefit is offset by decades of extra heat absorption.

145 ± 26 g C/m²/yr (~1.45 tC/ha/yr)
Net carbon accumulation (2001-2016) (2001-2016)
~71 %
Share of carbon stored in soil
~240 g C/m²/yr
Earlier net ecosystem productivity estimate
349 consecutive rainless days
2008-2009 drought duration (2008-2009)
5-10 (up to 80 in some patches) %
Tree mortality over the past decade

Details

Maturity
Established
Promoter
KKL-JNF (Jewish National Fund) / Weizmann Institute of Science (Yakir Lab)
Period
1964–present (eddy-covariance monitoring since ~1999)
Keywords
afforestation, carbon flux monitoring, semi-arid forestry, FLUXNET research, climate science

Context

The Jewish National Fund (KKL-JNF) established a pine plantation in 1964 across roughly 3,000 hectares in the semi-arid northern Negev (rainfall only 280-300 mm/year), between Meitar and Arad, Israel. Since around 1999-2000, an eddy-covariance flux tower installed by Prof. Dan Yakir's lab at the Weizmann Institute of Science has monitored carbon fluxes as part of the international FLUXNET network, making Yatir one of the world's longest-running semi-arid forest carbon-flux studies.

Objectives

Assess whether large-scale afforestation of semi-arid shrubland can function as a long-term carbon sink, while KKL-JNF continues to manage the forest for land conservation and recreation.

Activities

Continuous plantation management by KKL-JNF since 1964, alongside more than two decades of continuous eddy-covariance flux measurement and peer-reviewed scientific monitoring as part of FLUXNET.

Results

Net carbon accumulation was measured at 145 ± 26 g C/m²/yr over 2001-2016 (roughly 1.45 tC/ha/yr), with about 71% of carbon stored in soil rather than biomass; an earlier study found net ecosystem productivity of about 240 g C/m²/yr. However, converting bright semi-arid shrubland to darker forest canopy increases solar radiation absorption and reduces evaporative cooling, meaning decades — or over a century — of carbon accumulation are needed before the forest achieves net climate cooling. The 2008-2009 drought produced 349 consecutive rainless days, and tree mortality has reached 5-10% over the past decade, up to 80% in some patches.

Conclusions

Yatir demonstrates that semi-arid afforestation can sequester carbon over the long term, but with significant trade-offs and limitations: net climate-cooling benefit is delayed by decades to over a century due to albedo effects, the pine monoculture displaces native open-landscape species, natural regeneration is limited by grazing and drought, fire risk from a single-species stand is unaddressed, and the forest has not been certified under any third-party carbon standard.

Implementation
Indicative cost
Medium (€50k–€500k) — No cost figures disclosed in source material; cost_band is a conservative estimate for multi-decade afforestation and monitoring infrastructure across ~3,000 ha.
Time to results
Long (> 3 years) — Plantation established 1964; continuous eddy-covariance monitoring since approximately 1999-2000, with published results spanning 2001-2016 and beyond.
Staffing & skills
Managed continuously by KKL-JNF (Jewish National Fund) foresters since 1964, Carbon-flux research conducted by Prof. Dan Yakir's lab at the Weizmann Institute of Science as part of the international FLUXNET network

Conditions for success

  • Long-term institutional land management commitment (60+ years)
  • Sustained academic research partnership providing continuous, peer-reviewed monitoring
  • Integration into an international flux-monitoring network for comparability

Common failure modes

  • Albedo effect delays net climate-cooling benefit by decades to over a century
  • Pine monoculture displaces native open-landscape biodiversity
  • Limited natural regeneration due to grazing and drought
  • Unaddressed single-species fire risk
  • Drought-driven mortality up to 80% in some patches
  • No third-party carbon-standard certification

Where it fits

Governance type
national forestry NGO with academic research partnership
Scale
single forest site (~3,000 ha)
Income level
high-income

Commonly funded by

Philanthropic / foundation funding

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Data sources

Where this practice's information was retrieved from, and when.

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