摘要
本文综合运用了地理信息系统（GIS）、遥感（RS）和全球卫星定位系统（GPS）等技术手段，分析了人口密集的川中丘陵乡村区域土壤有机碳密度（SOCD）和储量（SOCS）的空间分布及影响因素。结果表明，区域内SOCD和SOCS平均值分别为5．58kg／m^2和75．77×10^5g，SOCD随丘体高度的降低向四周逐渐增大，SOCS主要分布于旱地、水田等土地利用类型中。0—30cm土层和土体深度内，SOCD以冬水田最高，裸岩最低：SOCS则以丘脚旱地和轮作水田最高，裸岩最低。地形、土地利用和土地覆盖对SOCD、SOCS影响明显。
Based on villase-scale landscape ecosystem, the spatial characters and influence factors of soil organic carbon density and stocks were studied by GIS, RS and GPS in densely popubated Mid-Sichuan Hilly Region. The results showed that SOCD and SOCS in this re,on were 5. 58 kg/m^2 and 75.77 × 10^5 g, SOCD increased with the height decreased, moat of the SOCS concentrated on non-irrigated land and marshy field. In 0 - 30 cm of soil layer, winter water logged paddy field had the highest SOCD value （4.78 kg/m^2 and 12.63 kg/m^2） and bareness rocks had the lowest value （ 1.47 kg/m^2 and 1.57 kg/m^2 ）. Most SOCS concentrated on dry land of feet hill and shifting marshy fields, a few one concentrated in bareness rocks. Landform, land-use and land-cover obviously influenced the SOCS.
出处
《四川环境》
2007年第1期21-26,共6页
Sichuan Environment
基金
四川省教育厅基金(2005A005)
四川省青年科技基金(04ZQ026-018和ZH14302)
