草原与草坪
草原與草坪
초원여초평
GRASSLAND AND TURF
2011年
6期
83-86,93
,共5页
人工草地%种内种间竞争%生态与生产稳定性
人工草地%種內種間競爭%生態與生產穩定性
인공초지%충내충간경쟁%생태여생산은정성
sowed pasture%intraspecific/interspecific competition%grassland ecological and production stability
种内种间竞争是研究人工草地极其重要的理论基础,草地生态与生产稳定性是建立人工草地的根本目标。单播人工草地种内竞争尽管是相互的,但主要由密度依赖机制控制着种群动态。资源的数量、质量和分布等特征决定着混播人工草地种间竞争的过程和结局。虽然存在竞争排斥,但生态位相似、竞争能力相当的2~3个草种混播是比较适宜的。要获得人工草地持续高产和防止其退化,必须采取综合农作管理措施。从植物群落、动物群落及人工草地生态系统3个层次上维持其生产稳定性,即人工草地只有生态稳定,生产才能稳定。
種內種間競爭是研究人工草地極其重要的理論基礎,草地生態與生產穩定性是建立人工草地的根本目標。單播人工草地種內競爭儘管是相互的,但主要由密度依賴機製控製著種群動態。資源的數量、質量和分佈等特徵決定著混播人工草地種間競爭的過程和結跼。雖然存在競爭排斥,但生態位相似、競爭能力相噹的2~3箇草種混播是比較適宜的。要穫得人工草地持續高產和防止其退化,必鬚採取綜閤農作管理措施。從植物群落、動物群落及人工草地生態繫統3箇層次上維持其生產穩定性,即人工草地隻有生態穩定,生產纔能穩定。
충내충간경쟁시연구인공초지겁기중요적이론기출,초지생태여생산은정성시건립인공초지적근본목표。단파인공초지충내경쟁진관시상호적,단주요유밀도의뢰궤제공제착충군동태。자원적수량、질량화분포등특정결정착혼파인공초지충간경쟁적과정화결국。수연존재경쟁배척,단생태위상사、경쟁능력상당적2~3개초충혼파시비교괄의적。요획득인공초지지속고산화방지기퇴화,필수채취종합농작관리조시。종식물군락、동물군락급인공초지생태계통3개층차상유지기생산은정성,즉인공초지지유생태은정,생산재능은정。
Study on the intraspecifie/interspecific competition is critically important for the research in the field of sowed pasture. For the mono-culture,the intraspecific competition mainly depends on the density. For the mixed sowed pasture, the process and result of competition are determined by the quantity, quality and distri- bution of the resources. The mixed pasture combined with 2 to 3 species is proper. The integrated practices should be conducted for sustained high productivity and the stability at 3 levels of plant community,animal community and sowed pasture ecosystem should be maintained for the stable production.