From the excellent Electronic Intifada:
In the Naqab, Jewish National Fund (JNF) trees are planted row after row, cutting off Bedouin communities from their land, constricting their nomadic movements and pushing them into the poor urban townships. Entire Bedouin villages such as that of al-Araqib, Karkur and Twail Abu Jarwal have been destroyed and their populations made homeless simply to make way for JNF forests. The largest JNF forest is the Yatir forest located in the northern Naqab which covers 30,000 dunams and is in fact Israel’s largest planted forest.
Inspired by Zionist mythology to make the desert bloom, the JNF’s forestation schemes now includes the “Blueprint Negev” project — a ten year and $600 million initiative which includes program for water conservation and further afforestation in the Naqab. None of these facilities, of course, will be for the benefit of the Bedouins living in “unrecognized” villages which Israel states are illegal although the Bedouin have lived there for generations.