...Thousands like 'Abbas Khaled 'Ali Yusef and Mufida Ahmad have lost their family property with no compensation or recourse. 'Ali Yusef's town of Nazlat Isa-once a thriving market on the Green Line that catered primarily to Palestinian citizens of Israel-saw over 200 shops and five homes demolished by the Wall's construction in the past year and a half. In addition, over 100,000 trees have been uprooted in 47 communities and approximately 3,700 acres of cropland destroyed for the footprint of the Wall. And these direct losses of assets are just one type of economic destruction wrought by the construction of the first phase of the Wall and its buffer zone.
In addition, the Wall makes large tracts of land inaccessible to their owners. Its first phase isolated 51 communities from their lands, which total 25,000 acres. While this land has not been officially confiscated, many fear that it soon will be-according to Israeli law, land that goes uncultivated for three years becomes government property. While Israel has built 20 gates in the Tulkarem and Qalqiliya districts, ostensibly to help farmers reach their fields, most are permanently closed, and at the few that open sporadically there have been reports of Palestinians shot, beaten, humiliated, and prevented from crossing. Even farmers who still have access to their land face serious questions about whether and how much to plant, since impeded access to markets means they may see little or no return on their investments.
Likewise, the Wall blocks access to water. The first phase of construction has trapped 50 wells in the buffer zone and west of the Wall. These wells supply 8,770,000 cubic yards of water annually and are essential to the irrigation of cropland in the area. In Qalqiliya, 34 of the district's 75 wells are now inaccessible to residents, and over 200 cisterns and tens of reservoirs are isolated behind the Wall. Certain areas west of the Wall, like Baqa ash Sharqiya, have long served as sources of water for surrounding villages. Tankers would drive well water to neighboring communities that have no water source. Now that the Wall separates Baqa ash Sharqiya from these villages, it is virtually impossible for the tankers to get through. Not only does the loss of water assets result in reduced water access for households and a decline in agriculture, but since these wells are privately owned, it also means lost income for the well owners.
Finally, the Wall hinders mobility, and therefore, economic activity. Because some communities are trapped between the Wall and the Green Line, while others are almost completely sealed off by the Wall, residents simply have limited access to the employment opportunities, markets, and resources that they once enjoyed. In many communities the Wall makes it impossible to travel for work....
http://www.thirdworldtraveler.com/Israel/Backs_To_Wall.html