黄河三角洲繁殖鸟类群落特征的初步研究

黄河三角洲繁殖鸟类６４种，夏候鸟占６７．２％，涉禽，游禽占４５．３％，它们影响着夏季鸟类群落结构的季节性变化。繁殖鸟类种数变化曲线呈单峰型；个体数量变化曲线呈双峰型，受湿地景观生态类型和鸟类营巢，取食方式等的影响，繁殖鸟类以地面巢位为主，其次是树冠层和芦苇层，且多集中在苇场草地，农田苇沟林网，人工林生境中，在此形成高物种多样性鸟类群；

A STUDY ON CHRACTERISTICS OF THE BREEDING BIRD COMMUNITY IN THE YELLOW RIVER DELTA

There are about 64 kinds of breeding birds in the Yellow River Delta,the summer residents 67.2%,the wading and swimming birds 45.3%.These birds influence the seasonal changes of the bird community structure.The changing curve of species has a single peak,and that of number has 2 peaks.These,the wet habitat types and the manners of nesting and feeding of the birds determine the ecological distribution.Most of the birds breed on the ground,in the reed layer and the canopy of the manufacture forest.The species diversities of the communities are higher in these habitat types than others that forested condition and landscape heterogeneity both are difference.The birds,gathering and feeding in the seashore,everglade,farmland and forest,play an important role for controlling the insect pest in agriculture and forestry,and keeping the ecological balance in the Yellow River Delta.