manmade ecosystem造句

By surveying the present situation of natural rehabilitation and manmade reconstruction about the several highway rocky slope around guiyang , highway rocky slope indicates vegetation can be recovery naturally , but the recovering velocities are greatly different because the influence factors are complicated ; the protecting measures for manmade ecosystem can create good ecosystem landscapes in short time , but it can ' t resist natural disasters
摘要对贵阳市附近数段道路岩质边坡植被自然恢复和人工修复的现状调查，路堑岩质边坡坡面植被可自然恢复，因影响因素复杂，其恢复速率差别较大；岩质边坡坡面人工生态保护措施短期内生态景观良好，但不能抵御自然灾害。
It's difficult to find manmade ecosystem in a sentence. 用manmade ecosystem造句挺难的