小尺度农业生态区划研究——以三江平原八五三农场二分场为例

Small scale agroecological regionalization: a case study of the Second Branch of 853 State Farm in Sanjiang Plain of Northeastern China.

本文以三江平原八五三农场二分场为例,探讨了小尺度农业生态区划的方法。作者根据该分场的农业自然条件和特点,采用数量化方法Ⅰ筛选出土壤类型、土地潜在旱涝类型、白浆层厚度和地貌类型4个因子作为该分场衣业生态区划的指标因子,并根据筛选结果,确定了这4个因子的相对重要性顺序。将4个指标因子的专题图重迭,划分出区划的基本类型单元。根据第1重要的指标因子,将基本类型单元组合成农业生态地段。根据第2重要的指标因子,将地段划分成农业生态地块。根据第3和第4重要因子,进一步将地块划分成农业生态型。

In this paper, the agrcecological regionalization of the Second Branch of 853 State Farm in Sanjiang Plain of Northeast China was studied. Based on the natural conditions of the Farm, major indiceses of the regionalization were selected through the Quantification Mathod I, which are soil types, situations of potential drought and water logging, thinkness of albic horizon and landforms. According to their relative importance, the order of these indices was determined. The special maps for each index were overlaid to determine the basic units of the regionalization. With the first important index, agro-eco-sections were made up; with the second important index, agro-eco-sections were divided into agro-eco-sites; and with the third and forth important indices, agroeco-sites were divided into agro-eco-types.