擇伐林 的英文怎麼說
中文拼音 [zháifálīn]
擇伐林
英文
culled forest-
The second option is the preferred route to enrich already deforested areas with brazil nut and provide for the long - term capitalization of the amazonian farmer
第二個選擇是可取的路線，以豐富已伐林地區的植被，並為亞馬孫農民提供長期的自然資源資本化支持。Most of the pandas are distributed between 2 600 - 2 800 m ; 2 ) the pandas more often exploit the conifer - and - broadleaf - mixed forests and prefer to feed fargesia denudafa and more of their activities happen in forests where arrow bamboo grows better ; 3 ) the pandas avoid habitats where human disturbance is intensive ( x2 = 22. 000, df - 3, p = 0. 000 ) ; logging and livestock grazing significantly influence feeding habitats of pandas, while herb collecting and poaching has not. the giant pandas prefer the habitats where no human disturbance occurs. in conclusion, human activitires have intensively influenced feeding and other activities of the giant panda and its habitats
垂直主要分佈在海拔2600 - 2800m范四川大學碩士學位論文圍內; 2 ）主要利用植被類型中的針闊混交林，選擇有缺苞箭竹、而且缺苞箭竹生長良好的生境，對位置和森林起源這兩個生境因素的不同水平，都是隨機利用，沒有表現出明顯的偏好; 3 ）大熊貓明顯迴避那些人類干擾強度大的生境（ xz二22 . 000 ， df = 3 ， p = 0 . 000 ） ;伐木和放牧對大熊貓食竹的生長狀態有明顯影響，對發生采藥和偷獵的生境沒有明顯迴避;對於人類干擾強度大的生境，大熊貓利用頻度很低，干擾弱或中等時，表現出隨機利用;對于沒有干擾的生境，是高頻利用。Effects of selective cutting of different intensities on the tree layer structure and species diversity of evergreen broadleaved forest
擇伐作業對常綠闊葉林喬木層樹種結構及物種多樣性的影響With consideration of the damage to forest soil, production costs, damage to residual stands, the model of optimal selective cutting was set up to find the harvesting policy which would maximize the expected net financial returns and minimize damage to forest soil
以最大凈收益與對林地破壞最小為目標，綜合考慮了採伐作業對林地破壞、林木損傷、生產成本等因素，建立常綠闊葉林最優擇伐模型。分享友人