Table 1

Basic information on sampling cross-sections along the Jinan section of Xiaoqing River"

Table 2

Comprehensive evaluation index system for small watershed aquatic ecosystems"

Table 3

Classification and grading criteria for the health status of aquatic ecosystems"

Table 4

Selection and statistical results of habitat evaluation indicators for the Xiaoqing River"

Table 5

Measurement results of physicochemical indicators at different cross-sections of the Jinan section of Xiaoqing River"

Table 6

Number of endemic phytoplankton species identified"

Table 7

Catch volume at different cross-sections under equal sampling effort"

Fig.1

Species with a catch greater than 15 individuals in the population abundance at each section"

Table 8

Correlation between the abundance of fish indicator species and total nitrogen levels"

项目	ML	LSH	WLD	HXD	G35	DMT	与总氮的Person相关系数
中华鳑鲏数量	60	1	1	1	4	7	-0.938
鲫数量	5	6	6	5	8	8	0.560
数量	1	1	2	5	10	6	0.652
麦穗鱼数量	7	1	6	2	3	1	-0.722
总氮质量浓度/(mg·L-1)	2.08	7.42	7.61	9.06	9.27	8.87

Table 9

Summary of zooplankton biological indices"

Table 10

Summary of phytoplankton biological indices"

Table 11

Summary of biological indices for fish species"

Table 12

Total number of microbial taxonomic units"

Table 13

Total number of genus-level units associated with ammonia nitrogen-related microorganisms"

Table 14

Pearson correlation between biological indices and concentrations of total nitrogen and ammonia nitrogen"

Table 15

Evaluation scores for the measured data of the Jinan section of Xiaoqing River using the assessment system"

Fig.2

Trend of comprehensive scores across different cross-sections in the Jinan section of Xiaoqing River"