摘要
文章在云南省农用地分等成果的基础上,采用面积加权法计算云南省澜沧江流域耕地平均自然质量等,并采用统计分析方法分析流域内耕地自然质量等的空间分布特征。结果表明,云南省澜沧江流域耕地自然质量等范围1-26等,各等别面积差异较大,呈典型的偏态型分布,空间差异明显。耕地的自然质量等与土壤类型变化、纬度的变化、气候带的变化等呈现一定的非线性相关性,随着纬度的递增,气候带热量的减少,土壤质地的降低,耕地自然质量趋于下降。探讨澜沧江流域耕地自然质量等空间分布特征,可以优化流域内水量调配,为准确的掌握土地数据、合理利用土地、制定差异化的耕地质量提升策略等提供科学依据。
Area weighting method was used to calculate average farmland natural quality in Lancang River basin in Yunnan Province,and statistical analysis techniques was used to analyze space distribution features of farmland natural quality inside the basin on the basis of farmland grading results of Yunnan Province. The results indicated that farmland natural quality zone scopes were divided into 1-26 grades,and every grade areas had great discrepancies,which showed a typical type skewness distribution and obvious space differences. Farmland natural quality zones presented a certain nonlinear correlation with soil type changes,latitude changes,and climate changes,etc. With the increase of latitude,decrease of climate heat and soil texture,the natural quality of farmland tends to decline. Discussing the space distribution features of farmland natural quality in Lancang River basin would optimize water allocation within the basin,provided scientific foundation for precisely mastering soil data,rationally utilize the land and formulate differentiated cultivated land quality promotion strategies.
出处
《西南农业学报》
CSCD
北大核心
2015年第2期696-699,共4页
Southwest China Journal of Agricultural Sciences
基金
云南省省级政府采购专项"云南省农用地分等数据库整合"(530000HT201106955)
关键词
自然质量等
空间分布
耕地
澜沧江流域
Land natural quality Spatial distribution Arable land Lancang river basin
