Study On Agroforestry Ecological Change In Northeast China During The Puppet Manchu Period

Ecological environment is the material basis for the survival and development of human civilization.With the deterioration of ecological environment,ecological environment and sustainable development have attracted much attention.Northeast China has a wide range of land,fertile soil and rich forest resources,which used to be one of the best ecological environment areas in China.However,since modern times,especially in the pseudo-Manchu period,due to the predatory development of Japan,the agricultural and forestry ecological resources in Northeast China have been consumed a lot,and the agricultural and forestry ecological environment has been seriously damaged.This paper discusses from three aspects: farmland ecological change,forest ecological change and the influence of agroforestry ecological change,in order to reveal the agricultural and forestry life in Northeast China in the pseudo-Manchu period.The malignant change of state.The first part expounds the changes of farmland ecology.In the early stage of fake Manchuria,due to the establishment of "group tribe",the number of agricultural immigrants decreased,resulting in the desolation of a large number of farmland.In the middle and late stage of fake Manchuria,the Japanese puppet carried out agricultural reclamation policies such as "farmland formation",and a large number of wasteland were reclaimed.Farmland from abandoning wasteland to reclamation is one of the manifestations of farmland ecological change.The ecological changes of farmland are also manifested in the changes of planting structure,such as the decrease of soybean planting area,rice seed expansion and opium deformity planting.The decline of crop yield and the colonization of agricultural economy show that the ecological change of farmland is malignant.The second part explains the changes of forest ecology.Pseudo full period In Japan,the forest resources in Northeast China have been cut down,resulting in the reduction of forest area and the decline of forest volume,resulting in a change in forest layout.The third part discusses the impact of agricultural and forestry ecological changes.The malignant changes of agriculture and forestry ecology lead to a series of consequences.Farmland fertility decreased year by year,the influence of chemical fertilizer use on farmland soil structure showed that the loss of soil fertility was serious,conifer forest gradually succeeded into secondary broad-leaf forest,precious plants endangered and rare animals were endangered,indicating the emergence of biological species crisis.It is precisely because of the deterioration of agriculture and forestry ecology that soil and water loss is aggravated and natural disasters occur frequently in Northeast China.In a word,the predatory development belt of Japan in the pseudo-Manchu period The malignant changes of agriculture and forestry ecology in Northeast China warn us that we must abandon the economic development model of exhaustion and fishing,establish the concept of green sustainable development,and achieve the harmony between man and nature in the development.