期刊论文

中文

生态环境学报

1674-5906

2015

24

7

1098-1102

10.16258/j.cnki.1674-5906.2015.07.002

国家自然科学基金项目（31100381） 湖南省自然科学基金项目（13JJ4066）

本校为第一机构

活性有机碳（LOC）库是土壤质量和环境变化的“指示器”。了解土壤LOC储量及其对人为干扰的响应对预测区域土壤有机碳（SOC）库的早期变化趋势具有重要意义。通过选取中亚热带湘东丘陵区花岗岩红壤4种典型的土地利用方式，包括樟树（Cinnamomum camphora）天然林以及由此转变而来的杉木（Cunninghamia lanceolata）人工林、板栗（Castanea mollissima）园和坡耕地，采用物理、化学和生物化学方法研究了不同利用方式表土（0-20 cm）活性有机碳组分[颗粒有机碳、轻组有机碳（LFOC）、易氧化有机碳、溶解性有机碳（DOC）和微生物生物量碳（MBC）]的数量及其占土壤有机碳的比例（LOC/SOC）和影响因素...

Labile organic C (LOC) is a sensitive indicator of soil quality and environmental change. Understanding responses of LOC stock to land use change is essential to predicate early change of soil organic C (SOC) at regional scale. Four typical land use systems were selected in hilly region of subtropical China, including natural forest (dominated byCinnamomum camphora), Chinese fir (Cunninghamia lanceolata) plantation, Chinese chestnut (Cunninghamia lanceolata) orchard, and sloping tillage. Stocks of soil (0~20 cm) labile organic C (LOC) fractions, ratios of LOC to SOC, and their controls were me...