本研究还显示，生态环境是影响山羊绒直径的重要因素。
In addition, this study indicated that the environment was an important factor influencing down diameter.
但由于人为因素的影响和破坏，草地生态环境发生严重退化。
Eco - environment of grassland degraded seriously because of human influence and destruction.
但由于人为因素的影响和破坏，草地生态环境发生严重退化。
Eco - environment of grassland degraded seriously because of human influence and destruction.
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