Study on Increase of Farmers' Income in Tibet from an Ecological Tourism Perspective——A Case Study of Puqu Town in Nyingchi County

Based on investigation data of farmers＇ income in Puqu Town, Nyingchi County during 2008 -2013, sources of farmers＇ income and effects of ecological tourism on increase of farmers＇ income in Puqu Town were analyzed. The results show that crop farming and animal husbandry are still main sources of increase of farmers＇ income, and ecological tourism has played increasingly important roles in increase of farmers＇ income; household productive management income is dominant but increases slowly, but household service management income increases rapidly; all kinds of subsidies also contribute to increase of farmers＇ income; ecological tourism and increase of farmers＇ income show rational retum trends to a cer- tain degree; because of shortcomings in tourism management, ecological tourism in Puqu Town develops slowly; the overall development of ecolog- ical tourism is not consistent with increase of farmers＇ income.

Agricultural Production Structure Optimization: A Case Study of Major Grain Producing Areas, China

A large number of mathematical models were developed for supporting agricultural production structure optimization decisions; however, few of them can address various uncertainties existing in many factors （e.g., eco-social benefit maximization, food security, employment stability and ecosystem balance）. In this study, an interval-probabilistic agricultural production structure optimization model （IPAPSOM） is formulated for tackling uncertainty presented as discrete intervals and/or probability distribution. The developed model improves upon the existing probabilistic programming and inexact optimization approaches. The IPAPSOM considers not only food security policy constraints, but also involves rural households’income increase and eco-environmental conversation, which can effectively reflect various interrelations among different aspects in an agricultural production structure optimization system. Moreover, it can also help examine the reliability of satisfying （or risk of violating） system constraints under uncertainty. The model is applied to a real case of long-term agricultural production structure optimization in Dancheng County, which is located in Henan Province of Central China as one of the major grain producing areas. Interval solutions associated with different risk levels of constraint violation are obtained. The results are useful for generating a range of decision alternatives under various system benefit conditions, and thus helping decision makers to identify the desired agricultural production structure optimization strategy under uncertainty.

Expansion Strategy of Agricultural Industrial Chain of Suburban Villages and Towns in the Process of Urbanization——A Case Study of Yongle Town in Nanming District of Guiyang City

On the basis of introducing the connotation of agricultural industrial chain, taking Yongle Town in Nanming District of Guiyang City as an example, this paper analyzes the advantages and constraint factors of the suburban villages and towns in the process of expanding agricultural industrial chain in the context of urbanization. Corresponding strategies of expanding the agricultural industrial chain of Yongle Town in the process of urbanization as follows: vigorously develop the leading enterprises; strengthen the construction of farmers' specialized cooperatives and agricultural associations; build and perfect agricultural industrial chain organizations; set up the public information platform; rely on the food industrial park to propel the deep processing of agricultural products; vigorously develop the logistics of agricultural products; promote the development of operation model of "brand+ standard+ scale"; vigorously develop ecology-oriented rural tourism; give full play to the functional role of the government.