摘要
拉林河为松花江干流右岸的一级支流,本研究从景观生态学的视角,选择自然植被净第一生产力、自然系统稳定性、景观优势度及景观多样性等指标,综合评估拉林河流域的生态系统完整性,研究表明由于人为活动干扰,拉林河流域天然植被生产力较本底值有所降低,流域景观以林地和耕地为主,上游以林地为主,下游以耕地为主,流域景观多样性处于适中水平,虽人为活动对流域生态系统产生一定干扰,自然生态系统仍具有一定的阻抗干扰的能力。
The Lalin River is a first-level tributary on the right bank of the main stream of the Songhua River.From the perspective of landscape ecology,this study selects indicators such as the net primary productivity of natural vegetation,natural system stability,landscape dominance,and landscape diversity.The ecosystem integrity of the Linhe River Basin.Studies have shown that natural vegetation productivity in the Lalin River Basin is lower than the background value due to human activities.The watershed landscape is dominated by woodland and arable land,the upper reaches are dominated by forest land,and the lower reaches are dominated by arable land.Mainly,the diversity of the river basin landscape is at a moderate level.Although human activities cause some disturbance to the river basin ecosystem,the natural ecosystem still has a certain ability to resist interference.
作者
李宏伟
吕军
Li Hongwei;Lu Jun(Songliao Water Resources Research Institute,Changchun 130021,China)
出处
《环境研究与监测》
2019年第4期42-47,共6页
Environmental Research and Monitoring
关键词
拉林河
生态完整性
景观优势度
景观多样性
Lalin River
ecological integrity
landscape dominance
landscape diversityvision
