21. Honeyeaters preferred woodland habitat is vulnerable to the effects of land clearing , grazing and weeds. 22. Construction began in May 2008 with preliminary land clearing . 23. Indonesia has revoked the licenses of 151 forestry companies for using fire for land clearing . 24. "I was told that they will start land clearing work next week, " he said. 25. The remaining 10 percent is believed caused by traditional slash-and-burn harvesting and land clearing methods. 26. Urban development is also the cause of some land clearing , though not a major driver. 27. Environment Minister Sarwono Kusumaatmadja said Suharto had ordered plantation companies to stop all land clearing . 28. Rolls later qualified this book's debated overall position on Australian tree densities and land clearing . 29. Land clearing and settlement in the catchment has led to unfavourable conditions for coral growth.30. On a smaller scale, slash-and-burn land clearing activities by nomadic farmers was also to blame.