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水土保持区划工作是水土保持工作中的基础工作,而水土保持区划指标体系的建立则是水土保持区划中的关键步骤。新水土保持法颁布之后,新一轮的江苏省水土保持区划工作目前尚处于起步阶段,如何选取区划指标,又选取哪些区划指标来综合反映影响江苏省水土保持的因素至关重要。从确立江苏省水土保持区划指标体系建立的原则出发,并结合了江苏省自然、社会、经济、土地利用和水土流失等要素的情况及其特征,从中选取了22个江苏省水土保持区划指标。然后采用主成分分析法从22个区划指标中提取了15个主成分,并计算出各主成分的权重,最终建立了江苏省水土保持区划的指标体系。
Soil and water conservation zoning work is the basic work in soil and water conservation work, and the establishment of index system of soil and water conservation zoning is the key step in the division of soil and water conservation. After the promulgation of the new law of soil and water conservation, a new round of zoning of soil and water conservation in Jiangsu Province is still in its infancy. It is of vital importance to select the zoning indicators and select the zoning indicators to comprehensively reflect the factors that affect soil and water conservation in Jiangsu Province. Based on the principle of establishing index system of soil and water conservation zoning in Jiangsu Province and combining with the characteristics and natural and social, economic, land-use and soil erosion of Jiangsu Province, we selected 22 indexes of soil and water conservation in Jiangsu Province. Then, using principal component analysis, 15 principal components were extracted from 22 zoning indexes, and the weight of each principal component was calculated. Finally, the index system of soil and water conservation zoning in Jiangsu Province was established.