Research On The Adaptation Level Of Regional Livestock And Poultry Breeding Spatial Layout And Cultivated Land Resources

With the continuous expansion of livestock and poultry breeding scale,the number of livestock and poultry and the excretion of livestock and poultry manure are constantly increasing.Currently,livestock and poultry farming manure pollution has become an important part of agricultural non-point source pollution.The combination of planting and breeding is a new type of agricultural ecological model that realizes the sustainable development of planting and breeding.However,with the rapid development of urbanization,the livestock and poultry breeding industry has begun to concentrate in large cities and their surrounding areas.The release space of livestock and poultry manure and the distribution of cultivated land resources are misaligned,and the environmental pressure on local cultivated land has gradually increased.In this context,rational planning of the site selection problem for livestock and poultry breeding and scientific calculation of the adaptation level of breeding sites and cultivated land resources can provide for the optimization of the structure of planting and breeding industry,reducing the environmental pressure on cultivated land,and the rational allocation of livestock and poultry manure resources.Scientific support.This study takes dairy farms in Hebei Province as an example.After obtaining the latitude and longitude coordinates of 1,055 dairy farms,combined with data such as DEM elevation,slope,water area,roads and residential areas,explore the agglomeration characteristics and spatial distribution of dairy farms in Hebei Province;On this basis,analyze the overlap of the buffer zone of dairy farms;measure the environmental pressure of the cultivated land in the overlapping area and the conflict index between dairy farms.The main results of the research are as follows:(1)The average observation distance of dairy farms in Hebei Province is 3857.735 m,and the expected average distance is 6677.245 m.The nearest neighbor index NNI is equal to 0.578,which indicates that the average observation distance between dairy farms is less than the expected average distance,indicating that dairy farms in Hebei Province It is clustered and distributed in space.Specific to each city,the nearest neighbor index of 11 prefecture level cities is between 0.438-0.814,belonging to the agglomeration distribution.(2)Under the condition of self adaptation,46.050-7311.701 hectares of arable land are suitable for the combination of planting and breeding around 1055 dairy farms in Hebei Province.Among them,there are 1006 dairy farms which are suitable for middle and high level,accounting for 95.355% of the total dairy farms in Hebei Province.On the premise of self adaptation hypothesis,the main factor determining the level of adaptation between dairy farms and surrounding arable land is the number of arable land around dairy farms.(3)Under the condition of interactive adaptation,there are 364 dairy farms in Hebei Province which are suitable for the combination of planting and breeding,accounting for 34.403%of the total amount of dairy farms in Hebei Province.In the context of interactive adaptation,the aggregation and distribution of dairy farms is an important factor affecting the adaptation level between dairy farms and surrounding cultivated land.(4)Based on the comprehensive analysis of the self adaptation index and interactive adaptation index,it is found that the natural cultivated land resources of dairy farms are the key factors affecting the three types of dairy farms: high-high,medium and low.The aggregation degree of dairy farms is the key factor affecting the three types of dairy farms,namely "highmedium","high-low" and "high-high".