21. This move was prompted by land degradation at Lawnton. 22. EGZIABHER : Land degradation , loss of vegetation, trees, soil erosion and increased destruction of hydrological resources. 23. This has left a legacy of land degradation , particularly soil salting, tree dieback, and weed invasion. 24. EGZIABHER : I don't believe that there can be crops that would withstand continuing land degradation . 25. The late 1980s saw ACF make a major effort to redress Australia's massive land degradation problems. 26. The study outlines problems like contaminated water supplies, land degradation and lack of proper waste disposal. 27. "Agricultural practices "-Destructive agricultural practices such as overuse of fertilizers and overgrazing lead to land degradation . 28. Excessive use of vegetation by grazing can be especially conducive to land degradation in dry areas. 29. Deep erosion gullies and the gravel, stone and rock covered valley bottoms attest to extensive land degradation . 30. Salinity is an important land degradation problem.
